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2020, 2020 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM)
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The number of new cases of infection of the Coronavirus disease, COVID-19, is alarming in many places in the world. In several world countries, including USA, the infection rates and daily cases numbers are fairly high; and there are even some spike increases in some USA states. Since the USA is experiencing the highest number of daily new cases in the world from May through July, the most important question is when we will witness an effective decline in the number of daily new cases? This paper follows a data-driven approach to induce the disease decline values from two country groups in the world where the disease declined already to less than 25% of its peak daily new cases. We apply these country groups' models to predict the decline to 25% of the US's peak. We compiled, examined, and analyzed pandemic data and statistics of two countries: g1: 42 countries, and g2: 14 countries. We utilize their data in the prediction of the decline timeline of the US. Group g2 consists of 14 countries having a similar number of cases per one million population. The majority of the models predict that the decline to 25% of the US's peak will be around the end of November to the first week of October. The results are significant and impressive as it is highly demanded to have clues and methods for the timeline prediction of this pandemic in the USA.
2020
We have recently introduced two novel mathematical models for characterizing the dynamics of the cumulative number of individuals in a given country reported to be infected with COVID-19. Here we show that these models can also be used for determining the time-evolution of the associated number of deaths. In particular, using data up to around the time that the rate of deaths reaches a maximum, these models provide estimates for the time that a plateau will be reached signifying that the epidemic is approaching its end, as well as for the cumulative number of deaths at that time. The plateau is defined to occur when the rate of deaths is 5% of the maximum rate. Results are presented for South Korea, Italy, Spain, France, UK, Germany, and USA. The number of COVID-19 deaths in other counties can be analyzed similarly.
Nonlinear Dynamics
In this paper, we introduce a SEIATR compartmental model to analyze and predict the COVID-19 outbreak in the Top 5 affected countries in the world, namely the USA, India, Brazil, France, and Russia. The officially confirmed cases and death due to COVID-19 from the day of the official confirmation to June 30, 2021 are considered for each country. Primarily, we use the data to make a comparison between the cumulative cases and deaths due to COVID-19 among these five different countries. This analysis allows us to infer the key parameters associated with the dynamics of the disease for these five different countries. For example, the analysis reveals that the infection rate is much higher in the USA, Brazil, and France compared to that of India and Russia, while the recovery rate is found almost the same for these countries. Further, the death rate is measured higher in Brazil as opposed to India, where it is found much lower among the remaining countries. We then use the SEIART compartmental model to characterize the first and second waves of these countries, as well as to investigate and identify the influential model parameters and nature of the virus transmissibility in respective countries. Besides estimating the time-dependent reproduction number (Rt) for these countries, we also use the model to predict the peak size and the time occurring peak in respective countries. The analysis demonstrates that COVID-19 was observed to be much more infectious in the second wave than the first wave in all countries except France. The results also demonstrate that the epidemic took off very quickly in the USA, India, and Brazil compared to two other countries considered in this study. Furthermore, the prediction of the epidemic peak size and time produced by our model provides a very good agreement with the officially confirmed cases data for all countries expect Brazil.
Bangladesh Journal of Medical Science, 2020
Objective: The coronavirus, which originated in Wuhan, causing the disease called COVID-19, spread more than 200 countries and continents end of the March. In this study, it was aimed to model the outbreak with different time series models and also predict the indicators. Materials and Methods: The data was collected from 25 countries which have different process at least 20 days. ARIMA(p,d,q), Simple Exponential Smoothing, Holt’s Two Parameter, Brown’s Double Exponential Smoothing Models were used. The prediction and forecasting values were obtained for the countries. Trends and seasonal effects were also evaluated. Results and Discussion: China has almost under control according to forecasting. The cumulative death prevalence in Italy and Spain will be the highest, followed by the Netherlands, France, England, China, Denmark, Belgium, Brazil and Sweden respectively as of the first week of April. The highest daily case prevalence was observed in Belgium, America, Canada, Poland, Ir...
2020
Background-The wide spread of COVID-19 in the US has placed the country as the most infected population worldwide. This paper aims to forecast the number of confirmed cases and mortalities from 12 April to 21 May, 2020. There has been a large body of literature in 20 forecasting epidemic outbreaks such as C algorithms with shortfall of predicting for long periods and autoregressive integrated moving average models with the limited flexibility. However, the US COVID-19 data shows great variety in the relative increments of confirmed cases. This requires a reproductive time series. 25 .
2020
COVID-19 outbreak has been declared as a public health emergency of international concern, and later as a pandemic. In most countries, the COVID-19 incidence curve rises sharply in a short period, suggesting a transition from a disease-free (or low-burden disease) equilibrium state to a sustained infected (or high-burden disease) state. Such a transition is often known to exhibit characteristics of ‘critical slowing down’. Critical slowing down can be, in general, successfully detected using many statistical measures such as variance, lag-1 autocorrelation, density ratio, and skewness. Here, we report an empirical test of this phenomena on the COVID-19 data sets for nine countries, including India, China, and the United States. For most of the data sets, increase in variance and autocorrelation predict the onset of a critical transition. Our analysis suggests two key features in predicting the COVID-19 incidence curve for a specific country: a) the timing of strict social distancing...
2020
COVID-19 is an infectious disease, growth of which depends upon the linked stages of the epidemic, the average number of people one person can infect and the time it takes for those people to become infectious themselves. We have studied the COVID-19 time series to understand the growth behaviour of COVID-19 cases series. A structural break occurs in the COVID-19 series at the change time form one stage to another. We have performed the structural break analysis of data available for 207 countries till April 20, 2020. There are 42 countries which have recorded five breaks in COVID cases series. This means that these countries are in the sixth stage of growth transmission and show a downward pattern in reporting in the daily cases, whereas countries with two and three breaks, record the rapid growth pattern in the daily cases. From this study, we conclude that the more the breaks in the series, there is more possibility to determine the constant or decreasing rate of daily cases. It ...
Journal of Theoretical and Applied Information Technology, 2020
This paper analyzes the reported COVID-19 cases in some largely affected countries around the world and accurately predicts the future values of new, death, recovery, and active COVID-19 cases for effective decision making. The objective is to provide scientific insights for decision makers in these countries to avoid higher levels of severity and large waves of infections. The data for this study were obtained from COVID-19 stylized facts, extracted from the well-known worlddometer website and verified against the WHO's COVID-19 Dashboard, Johns Hopkins University's COVID-19 Dashboard, and CDC from mid of February 2020-Early April 2020. The data covered the highest five affected countries, namely, Brazil, India, Russia, South Africa, and the USA. The data were analyzed using time series forecasting model and presented pictorially in graphs bar charts and pie charts. Based on the outcome of the analyzed data, it was concluded that the predicted COVID-19 cases will reach the peak at the end of September 2020 and if the outbreak is not controlled, the studied countries may face inflated numbers and severe shortage of medical facilities that may worsen the outbreak. The paper concludes by few important recommendations about comprehensive and necessary actions that the government and other policymakers of these countries should take in order to control spread of the virus.
Handbook of Islamic Education, 2018
The subject of this chapter comprises two independent and yet mutually intertwined complex debates: the ‘ulamā’ and education . The complexity of the subject derives from the fact that the two themes of this chapter are also connected with several other historical developments that influenced the historicity of both ‘ulamā’ and education. For this reason, it is vital to explore and analyze the historicity of the ‘ulamā’, their changing positions and shifting concerns and priorities as well as the evolving concept of education. In doing so, this chapter discusses the theme of this investigation in relation to (i) Islam, knowledge, and authority; (ii) territorial expansion and the rise of Muslim civilizations and quest for knowledge and education; (iii) the development of institutional and educational structures; (iv) the emergence of the ‘ulamā’ to the level of law-makers and their influence on education and rational sciences; and (v) nationalism and modern approaches to science and education. These themes are by no means exhaustive, but within the limited capacity of this chapter, they present fresh interpretations of the subject matter and open new debates for further research and discussion.
The focus of the report is to analyze the Working Capital Management of Fahrenheit Marketing Communications Limited. The study has conducted using ratio analysis. The financial performance of Fahrenheit Marketing Communications Limited has been analyzed by analyzing its liquidity position, activity position and profitability. The study has been conducted based on secondary data. The data are collected for the period of three fiscal years from 2012-13 to 2014-15 of FMCL. The result of the study shows fluctuating trend in liquidity ratio and profitability of the firm. The firm should reduce the cost of operation to increase of its profitability. Since the financial report of the advertising industries in Bangladesh is not mandatory to disclose to public, that's why it is difficult to analyze from the view point of industry. So, time series analysis has been taken.
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