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1.
Advances in Terahertz Biomedical Imaging and Spectroscopy 2022 ; 11975, 2022.
Article in English | Scopus | ID: covidwho-1891714

ABSTRACT

Currently, aerosol is considered as the major route for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission. A safe sterilization method with an excellent penetration capability and ability to sterilize free spaces is urgently needed. Previously it has been experimentally demonstrated that microwave-based sterilization can effectively inactivate the H3N2 Influenza A virus through the structure-resonant energy transfer (SRET) effect with a radiation field intensity following the IEEE standard. In order to utilize the same mechanism to inactivate the SARS-CoV-2 virus, firstly, the structural resonant frequencies with electromagnetic (EM) waves have to be identified. In this paper we report our design and implementation of a spectrum measurement chip utilizing the coplanar waveguide with pre-printed mask. With the mask, the repeatability of the insertion loss measurement can be well-controlled. Our microwave absorption spectra results revealed that the coplanar-waveguide chip can identify the resonant microwave frequencies of difference viruses, including the SARS-CoV-2 viruses, highlighting the potential applications for not only the virus detection but also the safe and non-thermal sterilization of public spaces. During the presentation, we will also report the resonant EM wave frequencies of various corona viruses monitored by the aforementioned chip. Copyright © 2022 SPIE.

2.
International Journal of Information and Education Technology ; 12(6):548-554, 2022.
Article in English | Scopus | ID: covidwho-1847907

ABSTRACT

This study is based on the separation of teachers and learners caused by the COVID-19 pandemic, and the implication of Moore’s Transactional Distance Theory, which proliferated for nearly 30 years but has been inconsistently validated empirically. The quantitative approach was employed, with questionnaires distributed based on the learners’ perspectives. The subjects of the study include 153 respondents from computer science department of an Indonesian public university. Three key tenets of transactional distance include dialogue, structure, and learner autonomy were specifically addressed and validated as significant predictors in this study. The findings elucidated an inverse relationship between dialogue and learner autonomy respectively with transactional distance, and a less rigid course structure capable of contributing to lessen the perceived degree of transactional distance in the e-learning environment. Furthermore, this study discovered that e-learning satisfaction and internet connection speed had an impact on the extent of transactional distance. © 2022 by the authors.

3.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 57(5): 455-461, 2022 May 09.
Article in Chinese | MEDLINE | ID: covidwho-1818247

ABSTRACT

Today, there is greater awareness on the association between oral diseases and respiration diseases after the outbreak of COVID-19. However, confusion regarding the oral health management and medical risk prevention for patients with chronic airway diseases has been remained among dental clinicians. Therefore, the dental experts of the Fifth General Dentistry Special Committee, Chinese Stomatological Association, combined with the experts of respiratory and critical care medicine, undertook the formation of consensus on the oral health management of patients with chronic airway diseases in order to help dental clinicians to evaluate medical risks and make better treatment decision in clinical practice. In the present consensus report, the relationship of oral diseases and chronic airway diseases, the oral health management and the treatment recommendations of patients with chronic airway diseases are provided.


Subject(s)
COVID-19 , Oral Medicine , Consensus , Humans , Oral Health
4.
INFORMS International Conference on Service Science, ICSS 2020 ; : 255-260, 2022.
Article in English | Scopus | ID: covidwho-1750467

ABSTRACT

Since December 2019, the COVID-19 outbreak has spread in over 100 countries and regions at a stunning pace. To prevent humanitarian health hazards such as COVID-19, people are strongly suggested to purchase and use Personal Protective Equipments (PPEs) for self-protection. However, the fraction of the population who refused to comply with the PPEs is high (and also much higher in some regions than others). In this paper, we focus on an empirically tested behavioral explanation for the compliance obstacle (a lack of self-control) based on the present-bias effect, which means the trend to give a higher valuation to a present reward but a lower valuation to a future reward (O’Donoghue & Rabin, 2006). Since the utility of PPEs is realized in the future, a consumer may postpone his purchase decision but finally abandon his purchase plan in the future period due to this present-bias effect. The key take-away we focus on is that advance selling can be beneficial to the consumers as a commitment device (Bryan et al., 2010). However, the effect of advance selling may be limited, especially for consumers with low valuation, and can only encourage a part of consumers to purchase PPEs. Advance selling alone cannot fully address the compliance obstacles in PPEs. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

5.
International Journal of Sport and Exercise Psychology ; 19:S266-S267, 2021.
Article in English | Web of Science | ID: covidwho-1464456
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