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In this paper, we propose a COVID-19 epidemic model with quarantine class. The model contains 6 sub-populations, namely the susceptible (S), exposed (E), infected (I), quarantined (Q), recovered (R), and death (D) sub-populations. For the proposed model, we show the existence, uniqueness, non-negativity, and boundedness of solution. We obtain two equilibrium points, namely the disease-free equilibrium (DFE) point and the endemic equilibrium (EE) point. Applying the next generation matrix, we get the basic reproduction number (R0). It is found that R0 is inversely proportional to the quarantine rate as well as to the recovery rate of infected subpopulation. The DFE point always exists and if R0 < 1 then the DFE point is asymptotically stable, both locally and globally. On the other hand, if R0 > 1 then there exists an EE point, which is globally asymptotically stable. Here, there occurs a forward bifurcation driven by R0 . The dynamical properties of the proposed model have been verified our numerical simulations. © 2023 the author(s).
ABSTRACT
In this paper, we propose a COVID-19 epidemic model with quarantine class. The model contains 6 sub-populations, namely the susceptible (S), exposed (E), infected (I), quarantined (Q), recovered (R), and death (D) sub-populations. For the proposed model, we show the existence, uniqueness, non-negativity, and boundedness of solution. We obtain two equilibrium points, namely the disease-free equilibrium (DFE) point and the endemic equilibrium (EE) point. Applying the next generation matrix, we get the basic reproduction number (R0). It is found that R0 is inversely proportional to the quarantine rate as well as to the recovery rate of infected subpopulation. The DFE point always exists and if R0 < 1 then the DFE point is asymptotically stable, both locally and globally. On the other hand, if R0 > 1 then there exists an EE point, which is globally asymptotically stable. Here, there occurs a forward bifurcation driven by R0 . The dynamical properties of the proposed model have been verified our numerical simulations. © 2023 the author(s).
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The COVID-19 pandemic has significantly impacted on the working system, shifting working from office (WFO) into working from home (WFH) practice that requires employees to be skillful in using technology to support their work activities. However, this condition can affect job performance. This study aims to analyze the impact of ICT anxiety and smartphone addiction on job performance of all lecturers at NIPA School of Administration (Jakarta, Bandung, and Makassar). This study applied a quantitative method with a total sampling technique and conducted a survey on 135 respondents using an online questionnaire. Furthermore, this study employed job demands and resources theory as well as PLS-SEM to analyze five variables (ICT anxiety, smartphone addiction, interruption, job efficacy, and job performance) and to test seven hypotheses. The findings show that there is a positive relationship between ICT anxiety and interruption while interruption has negative influences on job efficacy and job performance. Therefore, this study recommends the facilitation of knowledge sharing related to ICT competence or literacy. In addition, NIPA should improve the security guarantees of the intellectual rights of the lecturers in relation to the choice of technology and integrate the demands of ICT needs with administrative-technical procedures.
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Treatment of COVID-19 that is based on plants could be a more cost-effective therapy against the disease. Flavonoids, a group of compounds that have been observed to have various effects, including antiviral activity, were chosen as the candidate molecule for treatment of COVID-19. Kalanchoe Pinnata is one of the plants containing flavonoids that has been demonstrated to have antiviral activity. The structure of ACE2 and various flavonoids were retrieved and cleaned from unnecessary residues. The ACE2 structure was subjected to molecular docking in order to analyze the binding affinity. Following that, the ADME properties of each flavonoid were analyzed accordingly. The QSAR analysis was also performed for each type of flavonoid. Lastly, molecular dynamics simulation was conducted. All of the tested compounds were able to bind to human ACE2 and SARS-CoV-2 Spike protein, but were unable to compete with them as the binding affinity of the compounds to the protein were lower compared to ACE2-Spike interaction. The ADME and toxicity analysis showed that most of the ligands were able to be absorbed by the GI tract, but have low bioavailability. The compounds also cause no major toxicity effects and were able to be sufficiently distributed to the body. Molecular dynamics analysis also revealed that among the compounds, quercetin and rutin were able to interact with ACE2 and Spike protein stably. The QSAR analysis showed that friedelin, kaempferol, quercetin, and rutin are mostly non-toxic, but the high Cramer values indicate that there are no initial safety impressions for these molecules and could cause toxicity. In conclusion, quercetin and rutin have potential to be a candidate for COVID-19 drug development based on the in-silico predictions results obtained. Friedelin and Narcissin whose affinity to the proteins were relatively stronger but had unstable interactions from molecular dynamics simulation results, may also be a potential COVID-19 treatment with further investigation. However, further research is required to assess the effectiveness and also specially to measure the toxicity of the compounds. © 2022 Malaysian Journal of Fundamental and Applied Sciences.
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The COVID-19 pandemic has significantly impacted on the working system, shifting working from office (WFO) into working from home (WFH) practice that requires employees to be skillful in using technology to support their work activities. However, this condition can affect job performance. This study aims to analyze the impact of ICT anxiety and smartphone addiction on job performance of all lecturers at NIPA School of Administration (Jakarta, Bandung, and Makassar). This study applied a quantitative method with a total sampling technique and conducted a survey on 135 respondents using an online questionnaire. Furthermore, this study employed job demands and resources theory as well as PLS-SEM to analyze five variables (ICT anxiety, smartphone addiction, interruption, job efficacy, and job performance) and to test seven hypotheses. The findings show that there is a positive relationship between ICT anxiety and interruption while interruption has negative influences on job efficacy and job performance. Therefore, this study recommends the facilitation of knowledge sharing related to ICT competence or literacy. In addition, NIPA should improve the security guarantees of the intellectual rights of the lecturers in relation to the choice of technology and integrate the demands of ICT needs with administrative-technical procedures. ICT anxiety;Smartphone addiction;Job performance;COVID-19;Work from home;PLS-SEM.
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Purpose: The global recession caused by the COVID-19 pandemic has led to the closure of thousands of village-owned enterprises (VOEs), which are community-managed enterprises that operate in the hostile rural areas in emerging economies. Thus, considering that a Schumpeterian view of economic downturn sees recessions as times where old products/services decline while new products/services emerge, this paper aims to explore the specific innovation-based diversification strategies that matter for the survival of emerging economy VOEs in recession periods to develop new theoretical insights. Design/methodology/approach: The study is based on multiple-case studies of 13 leading VOEs operating in the rural areas of Java Island in Indonesia, an emerging economy. The data was analysed using within-case and cross-case analyses. Findings: Overall, a number of major novel findings have emerged from the analysis, based on which the authors developed several new propositions. First, from the perspectives of both new product and new service diversification, “unrelated diversification” is the primary resilience strategy that seems to be associated with the survival of VOEs in the COVID-19 recession, over and above “related diversification”. Second, from an industrial sector diversification perspective, the most dominant resilient strategy for surviving the recession is “unrelated diversification into tertiary sectors (service sector)”, over and above diversification into the primary sector (agriculture, fisheries and mining) and secondary sector (manufacturing and construction). Originality/value: The authors contribute to the literature on entrepreneurship in emerging economies by identifying the resilience diversification strategies that matter for the survival of VOEs in recession. © 2022, Emerald Publishing Limited.
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This conceptual paper illustrates the issues, aims and significance of the ongoing study on the mental health of parents of children with Autism Spectrum Disorders (ASD) during the COVID-19 Pandemic and the role of digital technology that helps sustain well-being among parents of children with ASD. The recent COVID-19 situation lockdown and social distancing were reported to have intensified the behavioural effects on ASD children and further deteriorated the parents' mental health. Therefore, seeking related information and sharing experiences amongst parents of ASD children is crucial to sustaining the parent's mental health.
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Various policies regarding the application of information and communication technology are one form of effort to realize efficient and effective information delivery, one of the institutions or agencies that implement information and communication technology policies is an educational institution. When technology is developing, especially communication technology along with the presence of the COVID-19 Pandemic. In this regard, to provide the best information is also felt by the National Development University 'Veteran' East Java in introducing the situation and condition of the campus by implementing a Virtual Campus Tour. The purpose of this study was to determine the factors that influence the acceptance of the virtual tour of UPN 'Veteran' Jawa Timur based on the Technology Acceptance Model (TAM) model. This study uses proportionate stratified random sampling with a total of 266 respondents who are active students at UPN 'Veteran' Jawa Timur. Based on the results of the analysis, it was found that the factors that influence user behavior in using the virtual tour of UPN 'Veteran' Jawa Timur on an ongoing basis are factors of perceived usefulness, perceived ease of use, attitude toward using, and usability with significant results on the intention to use the UPN 'Veteran' Jawa Timur virtual tour. While the factor that most influences the behavior of users to accept Virtual Tour of UPN 'Veteran' Jawa Timur is the usability factor, this is because usability has the largest path coefficient value, which is 0.714 compared to other variables. © 2021 IEEE.
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Scientific abstract: R&D serves as one of the imperative aspects in handling the COVID-19 pandemic. Since the Indonesian government has declared the COVID-19 pandemic as a national disaster, a number of accelerated regulations were stipulated, engaging research and innovation acknowledged as Science, technology, and innovation (STI) Policy. The results of the regulation mapping in Indonesia during 2020-2021 include the 9 regulations (categorized as STI Policy and dominated by institutional settings of 44.4%, operational mechanisms of 33.3%, and legal devices of 22.3%) as an attempt to address the COVID-19 pandemic. Hence, it is expected that the implementation of STI Policy plays a role in generating the 50 innovation products through the COVID-19 research and innovation consortium. Public interest abstract: The COVID-19 pandemic has been declared as a national disaster in Indonesia. There are nine regulations in the field of Science, technology, and innovation (STI) Policy set by the Indonesian government until July 2021, which regulate institutions, by institutionalizing the implementation of research and innovation in the health sector. The institution is acknowledged as the COVID-19 Research Consortium, consisting of government R&D institutions, universities, industrial R&D institutions, professional associations, regulators, industry, and 50 research and innovation products which have been launched by this consortium.
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The SEIQR COVID-19 epidemic model is in the form of the system of first-order nonlinear differential equations. In this paper we propose multistage versions of the variational iteration method (VIM) to solve this COVID-19 epidemic model. The idea of multistage version is to divide the entire time domain into a finite number of subintervals and then implementing the VIM piecewisely on each subinterval. There are two kinds of multistage methods discussed in this paper, where the difference between the two methods lies in the number of restricted variations used in the correction functional. The multistage methods generally give more accurate solutions on longer time intervals than the classical versions. The multistage VIM with less number of restricted variations has the best performance among all types of variational iteration methods discussed in this paper. The accuracy of multistage VIM solution can be increased by using smaller size of subinterval or by implementing more iterations in each subinterval.
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Since the Covid-19 pandemic, this study investigates the variables that impact the intention to shop online through e-commerce in Indonesia. A total of 236 respondents are gathered using google form and analyzed using SmartPLS. Poll gathered using google form by sharing it through web-based media, such as Instagram, WhatsApp, Line, and Telegram from December 10th until December 14th, 2021. The result shows only 2 hypotheses rejected which quality of system and eWOM have not had an impact towards online purchase intentions. Other hypotheses such as perceived ease of use, perceived usefulness, quality of service, and quality of information were supported and have a positive impact towards online purchase intentions. Although, the perceived usefulness of e-commerce features must have been enhanced to increase customers' intention to purchase online through ecommerce. The limitation of this study is the small sample size, not covered risk for e-commerce transactions, and the area of data sample majority from Jakarta and its surroundings. © 2022 IEEE.
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The COVID-19 pandemic can certainly affect the performance and psychological condition of athletes. The purpose of this study was to describe the relationship between depression anxiety and stress on achievement motivation in female athletes during the pandemic. This study uses a quantitative approach research method. The sample used was female athletes amounting to 65 people. Data collection techniques using online questionnaires via google form. The questionnaire used in this study was the Depression Anxiety Stress Scale 42 (DASS 42) from Lovibond and Lovibond (1995) and the achievement motivation questionnaire. Data analysis was carried out using the Kendal tau correlation technique with the help of the SPSS 21 program. The results showed a negative correlation between depression and motivation of (-0.65);a significance value of 0.000 (p<0.05) between anxiety and motivation of (-0.57);a significance value of 0.000 (p<0.05) between stress and motivation of (-0.51);significance value 0.000 (p<0.05). The conclusion is that the higher the level of depression anxiety and stress the lower the athlete’s achievement motivation the relationship between depression and achievement motivation is in the strong category anxiety and achievement motivation is in the medium category and between stress and achievement motivation is in the medium category
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We discuss the dynamics of new COVID-19 epidemic model by considering asymptomatic infections and the policies such as quarantine, protection (adherence to health protocols), and vaccination. The proposed model contains nine subpopulations: Susceptible (S), exposed (E), symptomatic infected (I), asymptomatic infected (A), recovered (R), death (D), protected (P), quarantined (Q), and vaccinated (V). We first show the non-negativity and boundedness of solutions. The equilibrium points, basic reproduction number, and stability of equilibrium points, both locally and globally, are also investigated analytically. The proposed model has disease-free equilibrium point and endemic equilibrium point. The disease-free equilibrium point always exists and is globally asymptotically stable if basic reproduction number is less than one. The endemic equilibrium point exists uniquely and is globally asymptotically stable if the basic reproduction number is greater than one. These properties have been confirmed by numerical simulations using the fourth order Runge-Kutta method. Numerical simulations show that the disease transmission rate of asymptomatic infection, quarantine rates, protection rate, and vaccination rates affect the basic reproduction number and hence also influence the stability of equilibrium points. © 2021 Published by Indonesian Biomathematical Society.
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Uncertainty of the COVID-19 outbreak impacts mental health mainly among university students. This research seeks to identify the psychological impact and social support received among nursing students in UiTM Puncak Alam during COVID-19. A cross-sectional study used Depression Anxiety Stress Scale (DASS-21) and the Impact on Social and Family Support questionnaire among 114 nursing students. Students' anxiety (2.10 +/- 1.20) was higher than depression (1.50 +/- 0.73). However, participants reported receiving substantial social support, especially from family members (1.30 +/- 0.46). In conclusion, half of the participants showed the psychological impact;however, there was an increase in social support during the COVID-19 outbreak.
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This study aims to analyze acceptance of video conference at Zoom application for distance learning by observing correlation each variable on the research conducted. Data collection method by using questionnaire in June 2021. Pretest was done using Pearson Product Moment for validity testing and using Cronbach Alpha for reliability testing. All items was valid and all variable was reliable. Respondent in this study included junior and senior high school students, diploma and undergraduate students totaling of 393 respondents spread across DKI Jakarta area. Data was analyzed using SmartPLS for hypotheses testing. This study uses Technology Acceptance Model. The result show perceived ease of use has positive influence to perceived usefulness, perceived ease of use and perceived usefulness have positive influence to attitude toward use, perceived usefulness and attitude toward use have positive influence to intention to use video conference. As conclusion, video conferencing on the Zoom application can be accepted as an alternative in distance learning activities, especially during this covid-19 pandemic. © 2021 IEEE.
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We consider a SEIQR epidemic model which describes the spread of COVID-19. The SEIQR epidemic model is built by introducing an isolation compartment in the SEIR model. We implement the variational iteration method (VIM) to find the approximate solution for the SEIQR model. We first implement the VIM by applying restricted variations for both linear and nonlinear terms in the correction functionals and find the Lagrange multiplier for the VIM. The comparison between the solution obtained by such VIM and the solution obtained by the fourth-order Runge-Kutta method shows that the VIM is accurate only for relatively small time domains. For larger time domains, the VIM solution is inaccurate and unrealistic. Then we improve the previous VIM by reducing the restricted variations and show that the improved VIM is more accurate than the previous VIM for larger time domains. © 2021 the author(s).
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The low HDI in Pandalungan is a government-focused development priority, especially in the healthcare sector. The attempts to break the COVID-19 chain must be made to improve the quality of government services in the region. In optimizing the activities, the sub-district leaders play a significant role. There is an appeal to the sub-district leaders to enforce social distance since there is no face-to-face meeting with the appliance assigned. The Camat (a sub-district head) needs to adjust to this situation, so the Camat uses new media to perform his tasks. The COVID-19 pandemic affects several aspects of life, including the style of leadership. Digital leadership has become a model of leadership that is successful during the time of the COVID-19 pandemic. The current study, based on those evaluations, is aimed at assessing the impact of digital leadership on the performance of public services by the subdistrict chief Pandalungan. To meet the goal of the study, a qualitative approach is applied. It can be concluded that transformational leadership is oriented towards the organization's vision and goals, which are outlined in action. © Institute of Society Transformation, 2021
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The Covid pandemic had a significant impact on the economy because almost all sectors are affected. Food and Agriculture Organization (FAO) warned countries to be alert to the potential food crisis due to the COVID-19 pandemic. The research objectives are to (1) identify the income of the people affected by Covid 19, (2) analyze the changes in income, (3) formulate a mitigation model. The research method used is a survey with 240 respondents from rural communities affected by Covid 19, especially farmers and Micro, Small and Medium Enterprises (MSMEs). The analytical method used is cost and income analysis, SWOT analysis, poverty analysis and income distribution with the Gini Index approach. Covid 19 has impacted decreasing income and increasing poverty by 48.44% and the GI value of 0.604. The income distribution is increasingly widening and low/poor. Based on the SWOT analysis, the people affected by Covid 19 are in quadrant II, the point of growth and development. Mitigation model to prevent poverty and increase equity level with intensive strategy and integrative strategy. The strategy is to maintain product quality and continuity and optimization and development of marketing by utilizing government support and institutional strengthening.
Subject(s)
COVID-19ABSTRACT
The prevalence of upper tract infection / ARI in primary schools is 15% in 2019. Currently, upper respiratory infections cause most students to be absent from school compared to other disease factors. One of the most important causes of ARI is hand hygiene;therefore, washing hands using soap is the most critical effort to reduce ARI's prevalence in primary schools. This study aimed to determine the effect of the online video competition model on elementary school students to improve the ability to wash hands in 6 steps. The research design was an experimental control group. The number of research subjects was 30 students for the treatment group and 30 students for the untreated group. The length of the study is one month. The results showed that students who took part in online competitions experienced a significant increase in knowledge, attitudes, and behavior towards washing hands using soap. The research results on the intervention video competition as an educational medium about washing hands six steps compared to the control group. The video competition improves the ability to do handwashing in 6 steps, namely by doing, seeing, and listening.