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Understanding etiological role and epidemiological profile is needed to improve clinical management and prevention of acute respiratory infections (ARIs). A 5-year prospective study about active surveillance for outpatients and inpatients with ARIs was conducted in Gansu province, China, from January 2011 to November 2015. Respiratory specimens were collected from patients and tested for eight respiratory viruses using polymerase chain reaction (PCR) or reverse transcription polymerase chain reaction (RT-PCR). In this study, 2768 eligible patients with median age of 43 years were enrolled including pneumonia (1368, 49.2%), bronchitis (435, 15.7%), upper respiratory tract infection or URTI (250, 9.0%), and unclassified ARI (715, 25.8%). Overall, 29.2% (808/2768) were positive for any one of eight viruses, of whom 130 cases were identified with two or more viruses. Human rhinovirus (HRV) showed the highest detection rate (8.6%), followed by influenza virus (Flu, 7.3%), respiratory syncytial virus (RSV, 6.1%), human coronavirus (hCoV, 4.3%), human parainfluenza (PIV, 4.0%), adenovirus (ADV, 2.1%), human metapneumovirus (hMPV, 1.6%), and human bocavirus (hBoV, 0.7%). Compared with URTI, RSV was more likely identified in pneumonia (χ = 12.720, P < 0.001) and hCoV was more commonly associated with bronchitis than pneumonia (χ = 15.019, P < 0.001). In patients aged less than 5 years, RSV showed the highest detection rate and hCoV was the most frequent virus detected in adults and elderly. The clear epidemical seasons were observed in HRV, Flu, and hCoV infections. These findings could serve as a reference for local health authorities in drawing up further plans to prevent and control ARIs associated with viral etiologies.

This study measures the volatility of cryptocurrency by utilizing the symmetric (GARCH 1,1) and asymmetric (EGARCH, TGARCH, PGARCH) model of GARCH family using a daily database designated in different digital monetary standards. The results for an explicit set of currencies for entire period provide evidence of volatile nature of cryptocurrency and in most of the cases, the PGARCH is a better-fitted model with student's t distribution. The findings show positive shocks heavily affected conditional volatility as a contrast with negative stuns. Those additional analyses can be provided further support their findings and worthwhile information for economic thespians who are engrossed in adding cryptocurrency to their equity portfolios or are snooping about the capabilities of cryptocurrency as a financial asset.

Two new iridium organometallic compounds based on acetylacetone derivative ligands containing carriertransporting groups, Ir(L) 2 (acac-Ox) and Ir(L) 2 (acac-Cz), where L ¼ 3-(pyridin-2-yl)coumarinato N, C 4 , acac-Ox ¼ 3-(4-(5-(4 0 -tert-butylphenyl)-1,3,4-oxadiazole)benzyl)-pentane-2,4-dionate and acac-Cz ¼ 3-((4-(9H-carbazol-9-yl)phenyl)methyl)pentane-2,4-dionate, have been successfully synthesized and characterized by elemental analysis, 1 H NMR and FT-IR. The structure of the free ligand acac-Ox was established by single-crystal X-ray analysis as a cis-configurational enol of b-diketone. The photophysical properties of the complexes were examined by using UV-vis, photoluminescence spectroscopic analysis.The doped light-emitting devices with a configuration of ITO/MoO 3 (2 nm)/NPB (35 nm)/TCTA (5 nm)/ CBP:Ir(III) complex (x wt %, 20 nm)/TPBi (40 nm)/LiF (1 nm)/Al (150 nm) were fabricated. The devices based on Ir(L) 2 (acac-Cz) with a 9 wt% doping concentration showed the best EL efficiency performance, and exhibited green emission with a maximum external quantum efficiency (EQE) of 7.77% and a maximum luminous efficiency of 28.2 cd A À1 at a current density of 2.27 mA cm À2 , and a maximum luminance of 6348.7 cd m À2 at 11 V. When the doping concentration is 6 wt%, a maximum brightness of 4230 cd m À2 at 16 V and a maximum current efficiency of 20.33 at 1.23 mA cm À2 and a maximum external quantum efficiency (EQE) of 5.54% were achieved in the devices based on Ir(L) 2 (acac-Ox). By comparison of the electroluminescent performances of the devices based on Ir(L) 2 (acac-Ox) and Ir(L) 2 (acac-Cz), it was shown that the introduction of the hole-transporting group into the ligand improves the performance of Ir(L) 2 (acac-Cz) doped devices.

Purpose To analyze the impact of leadership safety commitment on miners’ safety participation behavior and to explore the mediating effect of miners’ psychological safety and the moderating effect of perceived supervisor safety attitude (PSSA) and perceived coworker safety attitude (PCSA). Methods A total of 1446 valid questionnaires were collected from miners working in state-owned mines in China from August to October 2019. A variety of scales were used to measure the variables, including “Our management has strict requirements for safe work when working backward”, “I made mistakes in the team, and other coworkers often have opinions about me”, “I will be regarded as a troublemaker if I raise safety issues”, “When we complete work safely, the supervisor is satisfied”, “My coworkers sometimes ignore safety rules”. Results Leadership safety commitment has a significant positive effect on miners’ safety participation behavior; psychological safety of miners partially mediates the relationship between leadership safety commitment and the safety participation behavior of miners; and PSSA and PCSA moderate the intermediary effect of miners’ psychological safety on leadership safety commitment and miners’ safety participation behavior. When PSSA or PCSA is positive, the mediating effect of psychological safety is stronger. Conclusion This paper analyzes miners’ safety participation behavior from the perspective of resilience and discusses the impact of leadership safety commitment on miners’ safety participation behavior. These offer theoretical guidance and inspiration for the management of organizations to enhance the positive effects of workplace leadership safety commitment and improve miners’ safety participation behavior.

With the advancement of digital technology, the operation scenarios and work of miners have changed. Although the rate of accidents caused by unsafe conditions is decreasing year by year, the rate of accidents caused by human errors is still high. To investigate the influencing factors of miners’ human errors in the context of smart mines, based on the attitude–behavior model, this paper introduced two variables, situational awareness and task complexity, and established a moderated mediation model to explore the path of safety attitudes on human errors. Using time-lagged data from 246 full-time miners working at smart mines, we found that miners’ safety attitudes were effective in reducing human errors, miners’ safety attitudes reduced human errors through the mediation of situational awareness, and task complexity enhanced the positive relationship between safety attitudes and situational awareness, thus positively moderating the indirect relationship between safety attitudes and human errors. The findings advance a new understanding of how safety attitudes can reduce miners’ human errors. They also provide practical implications on the importance of leadership and finding ways to promote situational awareness as well as maintaining good safety attitudes.

In the post-pandemic era, the employment environment in China has been worsening. New generation employees are faced with higher work requirements. Against the backdrop, the "involution" culture has been a mainstream culture of different walks of life. Pressure of competition brought about by "involution" has made overtime behaviors increasingly prevailing among new generation employees. In this background, this research discusses about the impact of organizational performance climate on new generation employees' overtime behaviors as well as the role of job insecurity and perceived employability in the process. Patients and Methods:The data collection is conducted in the currently popular industries. Ultimately, 348 valid questionnaires are collected. Later, the regression analysis and bootstrap methods are used to test the theoretical hypotheses. Results: Organizational performance climate can promote new generation employees' overtime behaviors; job insecurity plays a mediating role between organizational performance climate and new generation employees' overtime behaviors; perceived employability can negatively moderate the correlation between job insecurity and overtime behaviors, and negatively moderate the mediating effect between performance climate and overtime behaviors. Conclusion:Based on conservation of resources theory, this research explains the new generation employees' overtime behaviors formation mechanism under the "involution" culture in China. These results deepen the understanding of the overtime work mechanism according to characteristics of new generation employees and post-pandemic era, which can provide theoretical support and practical guidance for a reasonable control of employees' overtime behaviors under the "involution" culture.

Even in the context of smart mines, unsafe human acts are still an important cause of coal mine gas explosion accidents, but there are few models to analyze unsafe human acts in coal mine gas explosion accidents. This study tries to solve this problem through a risk assessment method of unsafe acts in coal mine gas explosion accidents based on Human Factor Analysis and Classification system (HFACS-GE) and Bayesian networks (BN). After verifying the reliability of HFACS-GE framework, a BN model of risk factors of unsafe acts was established with the Chi-square test and odds ratios analysis. After reasoning analysis, risk paths and key risk factors of unsafe acts were obtained, and preventive measures were granted. Based on the analysis of 100 coal mine gas explosion cases, the maximum probability of five kinds of unsafe acts of employees is 38%. Among the 22 risk factors, the mental state of employees has the greatest influence on the habitual violation of regulations, and the sensitivity value is 12.7%. This study can provide technical assistance for the risk management of unsafe acts in coal mine gas explosions.