A Bibliographical Analysis of Pragmatic Strategies Responding to the Pandemic Crisis in Aviation

The aviation industry has suffered from the COVID-19 pandemic since early 2020. Airlines, airports, and manufacturers reacted to fight against the disease to protect passengers as well as remain sustainable. The purpose of this study is to analyze existing archives and discover strategic plans implemented by essential actors of the commercial aviation system. Using inductive qualitative analysis in conjunction with VOSviewer bibliographical data visualization, this study unveils the practical strategies of resilience enacted by the airline industry, manufacturers, and commercial airports during the pandemic time. Based on the Crisis Response Matrix from Suk and Kim, airlines' survival strategies during COVID-19 include passenger protection, operational retrenchment, innovation, and long-term managerial plans. Manufacturers' main approaches are expanding business with maintenance, repair, and overhaul (MRO) on top of alternative fuel innovations for emission reduction. Remarkably, airports adopt policies and protocols to screen and protect passengers, share information about infected passengers, and create a contactless airport environment for the prevention and control of pandemic infectious diseases. Synthesis tables containing discoveries are provided for practitioners' future reference. © 2023, University Aviation Association. All rights reserved.

A Systemic Review and Meta-analysis of the Effect of SARS-CoV-2 Infection on Sperm Parameters

Objective. Several studies examined the putative effects of SARS-CoV-2 infection on sperm parameters. However, the results remain controversial. In this study, we conducted the most up-to-date systematic review and meta-analysis to investigate the effect of SARS-CoV-2 infection on sperm quality in COVID-19-positive and COVID-19-negative male participants. Method. Seven databases were searched for literature released through June 10, 2022, containing estimates for the outcomes of interest. Using a random-effects model (REM) or a fixed-effects model (FEM), we analyzed the pooled results. The quality of all included studies was assessed by the Newcastle-Ottawa scale. In addition, we performed a quantitative and subgroup analysis of semen data across all included studies. Results. Fourteen studies were extracted from 10 publications, involving a total of 1174 participates for meta-analysis. Sperm parameters of 521 COVID-19 male patients and 653 controls were analyzed. In 8 case-control studies, the pooled mean difference (MD) of total sperm motility was -5.37% (95% confidence interval (CI): -8.47 to -2.28;p< 0.05), suggesting that total motility was significantly impaired in male COVID-19 cases. Subgroup analysis showed a significant decrease in semen volume, sperm concentration, and total motility in 238 patients with a recovery time of less than 90 days. Moreover, in the other 6 included pre- to post-COVID-19 studies, the pooled MDs of sperm concentration, total sperm count, total motility, progressive motility, and normal morphology were -6.54 x 106/ml (95% CI: -10.27 to -2.81;p< 0.05), -38.89 x 106 (95% CI: -59.20 to -18.58;p< 0.05), -7.21% (95% CI: -14.36 to -0.07;p< 0.05), -5.12% (95% CI: -8.71 to -1.53;p< 0.05), and -1.52% (95% CI: -2.88 to -0.16;p< 0.05), respectively, which indicate SARS-CoV-2 infection significantly affected these five sperm parameters. Conclusion. Our results revealed that SARS-CoV-2 infection was significantly correlated with decreased sperm quality. Of six sperm parameters, total motility and sperm concentration were the most significantly decreased parameters. These results suggest a possible negative influence of SARS-CoV-2 infection on testicular function and male fertility. Given the potential detrimental effect of SARS-CoV-2 on semen quality, male reproductive health should be monitored closely in patients with COVID-19. This trial is registered with CRD42021275823.

Measuring higher education service quality during COVID-19 pandemic in China using a SERVQUAL method

There has been an emergency teaching and learning paradigm shift in China universities due to the closure of many higher educational institutions due to COVID-19. This study examines the education service quality during the pandemic. Five dimensions of SERVQUAL have been studied, namely tangible, dependability, responsiveness, assurance and empathy. Using a simple random sampling method, self-report questionnaires were distributed to undergraduate students from the Tianfu College of Southwestern University of Finance and Economics (SWUFE), who participated in this study. This resulted in 373 usable questionnaires. In all five dimensions of service quality, a gap was observed between students' perceptions and expectations, and are listed in ascending order as follows: tangible: -0.073, assurance: 0.015, empathy: 0.050, responsiveness: 0.052, and reliability: 0.056. The gap analysis between service quality perceptions and expectations showed that all scores for perceptions were higher than expected, except for the tangible dimension. Nevertheless, the negative gap is small and negligible. This finding indicates that the service quality of tangible dimension could be slightly improved. Specifically, the university must upgrade facilities and equipment to improve the fluency of the teaching network, and skills of teachers should be improved to advance their teaching methods, in order to support online teaching and learning, which could reduce the gap of service quality of tangible dimension between student perceptions and expectations. © 2021 Estudios de Economia Aplicada. All rights reserved.

Emerging questions and challenges of COVID-19 on reproductive health

During the outbreak of COVID-19, this paper aimed to discuss its potential risks on reproductive health, which was underpinned by the virus, drugs, disinfectants and psychological problems. The literatures review on previous and latest studies showed that COVID-19 may have potential effects on both men's and women's reproductive systems;that contraception should be recommended during antiviral treatment and for at least eight months after the end of antiviral treatment, but there is no evidence to support the termination of pregnancy without medical indicators during early pregnancy;and that chlorine disinfectants are not recommended for assisted reproduction laboratories. Medical professionals should make a comprehensive assessment according to the patient's fertility needs, disease status and psychological level, in order to provide reasonable fertility guidance and counselling. © 2020 Chinese Medical Association

Translocating classroom discourse practices during the Covid-19 pandemic in China: A reflective nexus analysis account

The present study is a reflective nexus analysis of classroom discourse practices that emerged during the Covid-19 pandemic crisis induced online teaching and learning. Nexus analysis is an action focused approach to discourse analysis that incorporates aspects of ethnography to examine that actions that make up the discourse in complex social behavior. Through a series of case studies, we examine how teachers adapted to teaching and their reflections on the classroom discourse practices that emerged and their reflections on how students adapted to online learning. Using the initiation-response-evaluation sequence (IRE) as a means of comparison across the case studies we discuss how teachers developed novel practices in the online world where the IRE emerged in either flipped or blended practices. Both teachers and students had adapted to this new context in becoming online teachers and online learners navigating new subject positions that reflect Gee's big 'D' Discourse. The study also illustrates how nexus analysis can be used as a reflective analysis through an examination of the discourses in place, interaction order, and historical body(ies) that were affected by the move to online teaching during the Covid-19 pandemic. © Urmia University Press.

Coronavirus disease 2019 among pregnant Chinese women: case series data on the safety of vaginal birth and breastfeeding.

OBJECTIVE: To assess whether vaginal secretions and breast milk of women with coronavirus disease 2019 (COVID-19) contain severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). DESIGN: Single centre cohort study. SETTING: Renmin Hospital of Wuhan University, Wuhan, Hubei province, China. POPULATION: We studied 13 SARS-CoV-2-infected pregnant women diagnosed between 31 January and 9 March 2020. METHODS: We collected clinical data, vaginal secretions, stool specimens and breast milk from SARS-CoV-2-infected women during different stages of pregnancy and collected neonatal throat and anal swabs. MAIN OUTCOMES AND MEASURES: We assessed viral presence in different biosamples. RESULTS: Of the 13 women with COVID-19, five were in their first trimester, three in their second trimester and five in their third trimester. Of the five women in their third trimester who gave birth, all delivered live newborns. Among these five deliveries, the primary adverse perinatal outcomes included premature delivery (n = 2) and neonatal pneumonia (n = 2). One of nine stool samples was positive; all 13 vaginal secretion samples, and five throat swabs and four anal swabs collected from neonates, were negative for the novel coronavirus. However, one of three samples of breast milk was positive by viral nucleic acid testing. CONCLUSIONS: In this case series of 13 pregnant women with COVID-19, we observed negative viral test results in vaginal secretion specimens, suggesting that a vaginal delivery may be a safe delivery option. However, additional research is urgently needed to examine breast milk and the potential risk for viral contamination. TWEETABLE ABSTRACT: New evidence for the safety of vaginal delivery and breastfeeding in pregnant women infected with SARS-CoV-2, positive viral result in a breast-milk sample.