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37th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2022 ; JOUR: 272-274,
Article in English | Scopus | ID: covidwho-2097627

ABSTRACT

Recently, COVID-19 has accelerated the non-contact culture. Many presentations, such as workshops and conferences, are conducted in an online and offline hybrid mode in a conference room. In presentations, a screen of the slide is particularly important. Therefore, we propose an algorithm that detects the screen in an image. Firstly, a screen region is extracted using a deep learning-based instance segmentation method. However, this extracted region has a noisy boundary. We designed an image processing algorithm composed of 7 main steps to solve this noise and detect the screen. To validate the proposed method, a real dataset was qualitatively evaluated, and the result images show that only meaningful screen regions in the test image can be extracted. © 2022 IEEE.

3.
17th Annual ACM/IEEE International Conference on Human-Robot Interaction, HRI 2022 ; JOUR:870-874, 2022-March.
Article in English | Scopus | ID: covidwho-2097606

ABSTRACT

The use of social robots has recently been investigated in various areas, including STEM (Science, Technology, Engineering, and Mathematics) education and artistic performances. To inform children of the seriousness of climate change and awareness that they can make change, we created the Robot Musical Theater performance. In this project, natural elements (wind, earth, fire, and water) were anthropomorphized and represented by humanoid robots (Pepper, Milo, and Nao). The robots were designed to motivate audience to participate in the action to prevent climate change. Because of COVID, only fourteen visitors as a single group were allowed to participate in real-time and posted to YouTube, where at the time of submission, 141 people have viewed the performance. The participants provided positive comments on the performance and showed their willingness to participate in the movement to prevent climate change, and expressed their further interest in STEM learning. This performance is expected to contribute to enhancing informal STEM and robotics learning, as well as advancing robotic arts. © 2022 IEEE.

4.
Journal of Korean Academy of Nursing Administration ; JOUR(3):307-317, 28.
Article in Korean | Scopus | ID: covidwho-2090868

ABSTRACT

Purpose: This study was explored the current nursing issues in the COVID-19 era by analyzing newspaper articles. Methods: The search term "nurse"was used to collect newspaper articles from 2020. Pre-processing and semantic network analysis and topic group clustering were conducted using the NetMiner program to analyze the collected articles. Results: A total of 256 articles were identified, and four topics were extracted. The core keywords were "medical care", "hospital", "COVID-19"and "medical workforce". The extracted topics were "work environment related to response to infectious diseases", "utilization of nursing resources", "excessive nursing work", and "shortage of nursing workforce". Conclusion: Our findings provide useful information for understanding social perspectives of critical nursing issues in the COVID-19 era. Most of the extracted topics are the actual problems that nurses have faced for a long time. Now, nurses must proactively address current nursing issues to respond to national disasters and provide quality nursing care. © 2022 Korean Academy of Nursing Administration.

5.
47th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2022 ; JOUR, 2022-August.
Article in English | Scopus | ID: covidwho-2088056

ABSTRACT

We present the first label-free detection and discrimination of SARS-CoV-2 variants having global spread (Wild-type, delta and omicron) by combining terahertz (THz) time-domain spectroscopy and a metamaterial-based sensing chip. THz spectra suggest sensitive discrimination between variants that have only one or two different amino-acid sequences for each virus type, respectively, within just few minutes. © 2022 IEEE.

6.
Pharmacoepidemiology and Drug Safety ; JOUR:379-380, 31.
Article in English | Web of Science | ID: covidwho-2084327
7.
Twelfth International Convention of Asia Scholars (Icas 12) ; JOUR: 339-354,
Article in English | Web of Science | ID: covidwho-2082915

ABSTRACT

This paper maps the Overseas Chinese affairs/Qiaowu-specific policies of both the People's Republic of China (PRC) and Taiwan in Sarawak State, Malaysia. These two governments are spreading their own versions of influence to win the hearts and minds of the local Chinese communities. The PRC's aim is to encourage the local Chinese to accept the PRC's cultural and diplomatic sovereignty;whereas Taiwan wishes to remain separate from the PRC as a sovereign state. The PRC's United Front Work Department manages Overseas Chinese affairs globally through a mechanism known as the 'five bridges.' For Taiwan, its Overseas Community Affairs Council provides links to the Overseas Chinese communities. In Sarawak, the Overseas Chinese affairs in general are managed by the PRC's Consulate-General Office. For education purposes, Sarawak's China Alumni, the Sarawak Liuhua is contesting with Sarawak Taiwan Graduates Association to attract local students to pursue tertiary education in either the PRC or Taiwan. The latter also manages Overseas Chinese affairs in Sarawak, especially involving applications for social visits and student visas to Taiwan. At this stage, the two governments are engaging with the local Chinese in Sarawak primarily via Chinese voluntary associations, through education, political-economic projects, and also the latest initiatives regarding medical aid to combat the Covid pandemic.

9.
43rd Annual Meeting of the Cognitive Science Society: Comparative Cognition: Animal Minds, CogSci 2021 ; : 2582-2587, 2021.
Article in English | Scopus | ID: covidwho-2073338

ABSTRACT

As the mental health crisis deepens with the prolonged COVID-19 pandemic, there is an increasing need for understanding individuals’ emotional experiences. We have built a large-scale Korean text corpus with five self-labeled psychological ground-truths: empathy, loneliness, stress, personality, and emotions. We collected 19,025 documents of daily emotional experiences from 3,805 Korean residents from October to December 2020. We collected 42,128 sentences with different levels of theory-of-mind. Each sentence was annotated by trained psychology students and reviewed by experts. Participants varied in their ages from the early 20s to late 80s and had various social and economic statuses. The pandemic impacted the majority of daily lives, and participants often reported negative emotional experiences. We found the most frequent topics: responses to confirmed cases, health concerns of family members, anger towards people without masks, stress-relief strategies, change of the lifestyle, and preventive practices. We then trained the Word2Vec model to observe specific words that match each topic from the topic model. The current dataset will serve as benchmark data for large-scale and computational methods for identifying mental health levels based on text. This dataset is expected to be used and transformed in many creative ways to mitigate COVID-19-related mental health problems. © Cognitive Science Society: Comparative Cognition: Animal Minds, CogSci 2021.All rights reserved.

10.
Journal of Molecular Liquids ; 366, 2022.
Article in English | Scopus | ID: covidwho-2049679

ABSTRACT

An innovative sonication method has been developed to produce inclusion complexes (ICs) of Oseltamivir (OTV) which is a potentially water-soluble anti-viral agent with lesser cytotoxicity. Proton signals and chemical shifts of OTV without any ambiguity confirm the formation of ICs with β-Cyclodextrin (B-CD) and Hydroxypropyl-β-cyclodextrin (H-CD). ICs are also supported by their atomic percentages as secondary evidence using XPS analysis. Analysis of drug release at three pH levels revealed the slow release of the OTV from ICs and also suitable for viral inactivation. A very less cytotoxic ability on cancer cell lines and enhanced the viral inactivation of OTV after being made into water-soluble ICs. © 2022 Elsevier B.V.

11.
Journal of the Academy of Nutrition & Dietetics ; 122(10):A109-A109, 2022.
Article in English | Academic Search Complete | ID: covidwho-2047212
12.
Archives of Design Research ; 35(3):145-157, 2022.
Article in En ko | Scopus | ID: covidwho-2030381

ABSTRACT

Background As the time and quality of physical activity of people decreased due to the COVID-19 pandemic, the wide social embracement created the need to use mobile-based fitness services. In particular, AI-based fitness services are becoming popular among users due to their various AI related functions that create synergy with on-devices, such as smartphones. However, while many studies on the technical aspects of AI-based fitness services are being conducted, studies on user experience are insufficient. This paper identifies the current situation of AI-based fitness services, explores user experience expectations of AI-based fitness services across the overall user journey, and extracts design insights through expert interviews. Based on the case study and interviews, design considerations for the AI-based fitness service were suggested. Methods This study mainly consists of two parts. By analyzing the case studies of the existing AI-based fitness service and their technical application, it was investigated whether the user experience can be improved by fully utilizing the AI function. Second, the capabilities of AI agents across the service journey were explored through user interviews, and the expert interview was conducted to support this. In order to increase the rigor of the interview analysis, a quantitative design process that protrudes statistically significant results was performed. Results After analyzing the three parts of this study, an AI-based fitness service user experience framework was derived and several design examples applied thereto were proposed. Before the users use the AI-based fitness service, tailored suggestions and precise analysis were considered important qualities of the AI agent. In the During phase, providing actionable feedback and offering data-based real time coaching was important. Reporting results helped users to set exercise plans and emotional support was important in the After phase. Conclusions This paper proposes a design strategy that can be helpful when designing various AI-based fitness services in the future by exploring the capabilities and user expectations of AI agents throughout the entire user journey of AI-based fitness services. In designing AI-based fitness services for health-related behavior changes of users, it is important to consider the user journey as a whole in the short term, However, it is also very important to consider the long-term evolutionary perspective between the user and the system. © This is an Open Access article distributed under the terms of the Creative Commons Attribution NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted educational and non-commercial use, provided the original work is properly cited.

13.
Sage Open ; 12(3), 2022.
Article in English | Web of Science | ID: covidwho-2021086

ABSTRACT

This study tests whether pairs trade conditional on representative bias in the options and stock markets leads to abnormal returns. While previous literature on representativeness focuses on a single index, S&P 500 and Russell 2000 indexes are used to examine the extent to which representative bias arises due to a pattern of similar information shock in the three analyzed periods. The empirical results of the options market lend little support to the representativeness anomalies because Russell 2000 index, relative to S&P 500 index, does not adjust to a sequence of information shocks in the 2020 economic downturn inflicted by the coronavirus pandemic, despite the asymmetrical responsiveness to information shock over the sample period of 2004 to 2020, and during the 2008 global financial crisis. However, the empirical findings of the stock market verify, to some degree, the existence of representative bias during the sample period of 2004 to 2020. To examine whether asymmetrical representativeness in the options market or representativeness in the stock market yields abnormal returns, pairs trade is designed to exploit riskless profits via buying S&P 500 index and selling Russell 2000 index. Based on the Fama and French three-factor model, the empirical evidence is in support of market efficiency because the pairs trading strategy cannot generate positive abnormal returns in both options and stock markets.

14.
Psychol Med ; : 1-14, 2022 Jul 26.
Article in English | MEDLINE | ID: covidwho-2016465

ABSTRACT

BACKGROUND: The impact of the coronavirus disease 2019 (COVID-19) pandemic on mental health is still being unravelled. It is important to identify which individuals are at greatest risk of worsening symptoms. This study aimed to examine changes in depression, anxiety and post-traumatic stress disorder (PTSD) symptoms using prospective and retrospective symptom change assessments, and to find and examine the effect of key risk factors. METHOD: Online questionnaires were administered to 34 465 individuals (aged 16 years or above) in April/May 2020 in the UK, recruited from existing cohorts or via social media. Around one-third (n = 12 718) of included participants had prior diagnoses of depression or anxiety and had completed pre-pandemic mental health assessments (between September 2018 and February 2020), allowing prospective investigation of symptom change. RESULTS: Prospective symptom analyses showed small decreases in depression (PHQ-9: -0.43 points) and anxiety [generalised anxiety disorder scale - 7 items (GAD)-7: -0.33 points] and increases in PTSD (PCL-6: 0.22 points). Conversely, retrospective symptom analyses demonstrated significant large increases (PHQ-9: 2.40; GAD-7 = 1.97), with 55% reported worsening mental health since the beginning of the pandemic on a global change rating. Across both prospective and retrospective measures of symptom change, worsening depression, anxiety and PTSD symptoms were associated with prior mental health diagnoses, female gender, young age and unemployed/student status. CONCLUSIONS: We highlight the effect of prior mental health diagnoses on worsening mental health during the pandemic and confirm previously reported sociodemographic risk factors. Discrepancies between prospective and retrospective measures of changes in mental health may be related to recall bias-related underestimation of prior symptom severity.

15.
Innovation in Aging ; 5:722-722, 2021.
Article in English | Web of Science | ID: covidwho-2011833
16.
Innovation in Aging ; 5:260-260, 2021.
Article in English | Web of Science | ID: covidwho-2011832
18.
Advances in Mechanical Engineering ; 14(8), 2022.
Article in English | Scopus | ID: covidwho-1993294

ABSTRACT

The surface acoustic waves (SAW) propagate inside the microdroplets resulting in kinetic and thermal impacts. The kinetic drives fluid particles inside the droplet while thermal impact increases the liquid’s temperature. This paper provides a comprehensive review of the research investigations related to internal kinetics and heating inside the microdroplet caused by the acoustic waves. The main factors that affect the kinetics and convection heat transfer are the piezoelectric materials, shape of the interdigital transducer (IDT) and mode of acoustic waves. Internal streaming (kinetic) leads to particle mixing, particle manipulation, cell sorting, cell patterning, cell separation, measuring the concentration of immunoglobulin and so forth. The effect of changing the mode of waves and the shape of IDT on the relevant applications are presented. Internal convection heat transfer is important where heating of the liquid is essential for many applications such as monitoring blood coagulation in the human plasma and an acoustic tweezer for particle trapping. Experimental methods developed by researchers to realise uniform temperature with constant heating and cooling cycles are also discussed. Such methods are widely used in the polymerase chain reaction (PCR) to detect COVID-19 infection. The heating of the droplet can be efficiently controlled by changing the input power and by varying the duty factor. © The Author(s) 2022.

19.
International Perspectives in Psychology: Research, Practice, Consultation ; 11(3):141-152, 2022.
Article in English | Scopus | ID: covidwho-1972531

ABSTRACT

The COVID-19 pandemic has affected all societies worldwide. The heightened levels of stress that accompanied the crisis were also expected to affect parenting in many families. Since it is known that high levels of stress in the parenting domain can lead to a condition that has severe consequences for health and well-being, we examined whether the prevalence of parental burnout in 26 countries (9,923 parents;75% mothers;mean age 40) increased during COVID-19 compared to few years before the pandemic. In most (but not all) countries, analyses showed a significant increase in the prevalence of parental burnout during the pandemic. The results further revealed that next to governmental measures (e.g., number of days locked down, homeschooling) and factors at the individual and family level (e.g., gender, number of children), parents in less (vs. more) indulgent countries suffered more from parental burnout. The findings suggest that stricter norms regarding their parenting roles and duties in general and during the pandemic in particular might have increased their levels of parental burnout. © 2022 Hogrefe Publishing.

20.
Yonsei Medical Journal ; 63(8):707-716, 2022.
Article in English | EMBASE | ID: covidwho-1968987

ABSTRACT

Purpose: To evaluate the efficacy of intervention policies on coronavirus disease-19 (COVID-19) dissemination. Materials and Methods: An age-structured compartmental model for the COVID-19 outbreak was proposed to predict the impact of control measures in the Seoul/Gyeonggi region. The model was calibrated based on actual data and realistic situations, including daily vaccine doses, proportion of delta variant cases, and confirmed cases by age. We simulated different scenarios for non-pharmaceutical interventions by varying social distancing and school attendance strategies. Results: Two-step mitigation of social distancing without in-person classes would result in a rapid increase in confirmed cases up to 10000 but would keep severe cases within the manageable range of the health care system. The overall impact of taking down the distancing level by one step with twice the increase in contacts at school was comparable to the above scenario. Implementation of two-step mitigation of social distancing along with a two-fold increase in contacts among the school-age group would dra-matically increase confirmed and severe cases by over 80000 and 100, respectively, as early as the beginning of December. This policy would cause the situation to spiral out of control, considering the scale of the response and time to prepare. On the other hand, the burden on the current healthcare system caused by two-step mitigation of social distancing and 40% increased contacts in the school-age group was manageable if prepared. Conclusion: A compromise between social distancing and school attendance policy and timely preparations for the spread of COVID-19 are required.

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