Mathematical modeling the epicenters of coronavirus disease-2019 (COVID-19) pandemic

2020 ◽  
Vol 9 (s1) ◽  
Author(s):  
Babak Jamshidi ◽  
Mansour Rezaei ◽  
Shahriar Jamshidi Zargaran ◽  
Farid Najafi
Keyword(s):  
Mathematical Modeling ◽  
South Korea ◽  
The Usa

AbstractIn epidemiology, the modeling of epicenters is important both conceptually and mathematically. This paper is an attempt to model epicenters mathematically. We present an algorithm to find new epicenters. Applying our model for the data related to COVID-19 pandemic, we obtain epicenters in China, South Korea, Iran, Italy, France, Germany, Spain, the USA, and Switzerland, on the days 1, 35, 42, 42, 49, 50, 50, 50, and 56, respectively. Although the number of these epicenters is less than 5% of all contaminated countries across the globe, as of March 22, 2020, they make up 74% of new cases and over 80% of total confirmed cases. Finally, we conclude that we expect to face three new epicenters between March 22 and April 1, 2020.

Neurosurgical activity during COVID-19 pandemic: an experts' opinion from China, South Korea, Italy, the USA, Colombia, and the UK

2020 ◽  
Vol 64 (4) ◽  
Author(s):  
Marco M. Fontanella ◽  
Giorgio Saraceno ◽  
Ting Lei ◽  
Joshua B. Bederson ◽  
Namkyu You ◽  
...  
Keyword(s):  
South Korea ◽  
The Usa ◽  
The Uk

Current Status and Future Prospects for Harvesting and Resource Management of the Agarophyte in Japan

1976 ◽  
Vol 33 (4) ◽  
pp. 1024-1030 ◽  
Author(s):  
Nobuo Yamada
Keyword(s):  
Resource Management ◽  
South Korea ◽  
Conservation Management ◽  
Resource Conservation ◽  
Current Status ◽  
Future Prospects ◽  
Annual Output ◽  
The Usa

Agar-agar manufacturing was Japan’s monopoly for about 300 yr from 1644 until about 1920, when its production was initiated in the USA by introducing techniques from Japan, and then was begun in South Korea, Indonesia, and many other countries. Today the average annual output of agar-agar of over 20 countries amounts to 6000 tons, half of which is produced in Japan.Agarophytes are harvested in many countries and traded among them. In Japan, nearly 14,000 tons are consumed in a year, two thirds of which are imported from about 20 countries.Under these circumstances, there is a worldwide demand for appropriate measures for resource conservation, effective harvesting, and utilization of agarophytes.This paper presents the results of basic and applied investigations on the agarophytes and the existing state of harvesting and resource-conservation management in Japan.

scholarly journals Analyses of clinical outcomes after severe pelvic fractures: an international study

2018 ◽  
Vol 3 (1) ◽  
pp. e000238 ◽  
Author(s):  
Kyoungwon Jung ◽  
Shokei Matsumoto ◽  
Alan Smith ◽  
Kyungjin Hwang ◽  
John Cook-Jong Lee ◽  
...  
Keyword(s):  
Mortality Rate ◽  
South Korea ◽  
Trauma Center ◽  
Data Bank ◽  
Pelvic Fractures ◽  
Older Age ◽  
Inhospital Mortality ◽  
Cox Regression Analysis ◽  
Factors Associated ◽  
The Usa

BackgroundThis study aimed to compare treatment outcomes between patients with severe pelvic fractures treated at a representative trauma center that was established in Korea since 2015 and matched cases treated in the USA.MethodsTwo cohorts were selected from a single institution trauma database in South Korea (Ajou Trauma Data Bank (ATDB)) and the National Trauma Data Bank (NTDB) in the USA. Adult blunt trauma patients with a pelvic Abbreviated Injury Scale >3 were included. Patients were matched based on covariates that affect mortality rate using a 1:1 propensity score matching (PSM) approach. We compared differences in outcomes between the two groups, performed survival analysis for the cohort after PSM and identified factors associated with mortality. Lastly, we analyzed factors related to outcomes in the ATDB dataset comparing a period prior to the implementation of the trauma center according to US standards, an interim period and a postimplementation period.ResultsAfter PSM, a total of 320 patients (160 in each cohort) were identified for comparison. Inhospital mortality was significantly higher in the ATDB cohort using χ2 test, but it was not statistically significant when using Kaplan-Meier survival curves and Cox regression analysis. Moreover, the mortality rate was similar comparing the NTDB cohort to ATDB data reflecting the post-trauma center establishment period. Older age, lower systolic blood pressure (SBP) and Glasgow Coma Scale (GCS) at admission were factors associated with mortality.DiscussionMortality rate after severe pelvic fractures was significantly associated with older age, lower SBP and GCS scores at admission. Efforts to establish a trauma center in South Korea led to improvement in outcomes, which are comparable to those in US centers.Level of evidenceLevel IV.

International perspectives on English teaching

2015 ◽  
Vol 14 (1) ◽  
pp. 2-17 ◽  
Author(s):  
Terry Locke
Keyword(s):  
Social Justice ◽  
South Korea ◽  
Educational Research ◽  
Design Methodology ◽  
Teaching Practice ◽  
Content Type ◽  
English Teaching ◽  
International Perspectives ◽  
The Usa ◽  
The University

Purpose – The purpose of this paper is to offer a personalised overview of the content of English Teaching: Practice and Critique for the years it was hosted at the Wilf Malcolm Institute for Educational Research (WMIER) at the University of Waikato (2002-2014). Design/methodology/approach – It notes trends in relationship to the context of origin of 335 articles published in this period (excluding editorials), including significant increases in articles originating in the USA and Pacific Rim Asian nations, particularly South Korea and Taiwan. It comments on articles that relate to the original vision of the editors’ founders, especially their emphasis on practice, criticality and social justice. Findings – Prevailing themes across 13 years are mapped and in some cases discussed. Originality/value – A number of reflections are shared in relation to the future of the journal and some challenges currently facing subject English.

scholarly journals ESports: a Review of Foreign and Russian Media Resources

2021 ◽  
Vol 26 (2) ◽  
pp. 325-330
Author(s):  
Alina G. Chernyavskaya
Keyword(s):  
South Korea ◽  
Internet Resources ◽  
The World ◽  
The Usa ◽  
Russian Media ◽  
Video Format ◽  
Resources Development ◽  
Media Market

Millions of people all over the world watch ESports matches and follow the news about favourite teams and players. Due to the COVID-19 pandemic ESports market has received unprecedented growth of audience. The present paper is aimed at exploring and comparing specific features of ESports internet resources development around the world. The author observes the most visited ESports sites in such countries as South Korea, China, the USA, and Russia. Also, this article examines website traffic statistics to analyze the popularity of ESports internet resources among an audience. The data is based on the number of views and visitors for each country during the day, month, and year. The study showed that the Asian ESports media market prefers to use video format for providing content compared to the USA and Russia. The USA and Russia still use text and video formats.

scholarly journals Progress in practical hydrogen production and utilisation in East Asia

2021 ◽  
Vol 28 (2) ◽  
pp. 88-101
Author(s):  
Pradipto Suwidji ◽  
Hoi Ying Chung ◽  
Yun Hau Ng
Keyword(s):  
South Korea ◽  
East Asia ◽  
Technology Development ◽  
Future Prospect ◽  
Pilot Projects ◽  
Energy Applications ◽  
Hydrogen Technology ◽  
The Future ◽  
The Usa ◽  
East Asia Region

Development of hydrogen utilisation for energy applications has seen promising innovation towards the future prospect of clean and sustainable energy, benefitting various aspects of environmental, social, industrial and energy security. In the APEC region, several economies, such as the USA, China, Australia, Japan and South Korea, have shown interest in the development of hydrogen technology for energy applications. These economies have been devoting effort towards research and development programmes, pilot projects and, up to a certain point, implementing it in their communities. In addition, these economies each have their own tailored hydrogen roadmap or strategy, ensuring a smoother path towards hydrogen development. In this mini-review, we analysed the approaches of three selected economies in the East Asia region towards hydrogen technology, namely China, Japan and South Korea. Each of these economies have their own strategies and priorities towards the application, production and future development of hydrogen technology. This review also analyses the future possibilities for the integration of hydrogen technology into various sectors, as well as various constraints faced by each economy. Therefore, the review might serve as a valuable reference towards the feasibility of future hydrogen technology development in the East Asia and APEC region.

scholarly journals Big and beautiful: the Megaxyela species (Hymenoptera, Xyelidae) of East Asia and North America

2017 ◽  
Author(s):  
Stephan M. Blank ◽  
Katja Kramp ◽  
David R. Smith ◽  
Yuri N. Sundikov ◽  
Meicai Wei ◽  
...  
Keyword(s):  
North America ◽  
West Virginia ◽  
South Korea ◽  
East Asia ◽  
Morphological Characters ◽  
Old World ◽  
Eastern Usa ◽  
The Usa ◽  
Coi Sequences ◽  
First Time

Megaxyela Ashmead, 1898 comprises 13 species, four of which are described as new and one is removed from synonymy: Megaxyela euchroma Blank, Shinohara & Wei sp. nov. from China (Zheijang), M. fulvago Blank, Shinohara & Wei sp. nov. from China (Hunan, Jiangsu, Zhejiang), M. inversa Blank & D.R. Smith sp. nov. from the USA (West Virginia), M. langstoni Ross, 1936 sp. rev. from the eastern USA, and M. pulchra Blank, Shinohara & Sundukov sp. nov. from China (Hubei, Jilin, Liaoning, Shaanxi, Tibet), South Korea (Kangwon-do) and Russia (Primorskiy Kray). The male of M. parki Shinohara, 1992 is described for the first time. A lectotype is designated for M. gigantea Mocsáry, 1909. A cladogram, based on COI sequences of seven species, is presented and interpreted in view of selected morphological characters. Records of M. fulvago sp. nov. from Hunan and of M. pulchra sp. nov. from Tibet extend the known distribution of Megaxyela in the Old World 600 kilometers farther south and 2500 kilometers farther west than previous records.

Innovative activity in the production of the military-industrial complex in the digital economy

2021 ◽  
pp. 56-63
Author(s):  
И.А. Зайцев ◽  
В.Д. Секерин
Keyword(s):  
South Korea ◽  
Military Spending ◽  
Digital Economy ◽  
Industrial Complex ◽  
Sensor Systems ◽  
Military Logistics ◽  
Military Industrial Complex ◽  
The Usa ◽  
Military Engineering ◽  
The Military

В статье рассмотрено место инноваций в цифровой экономике. Рассмотрены тенденции развития инноваций в оборонно-промышленном комплексе. Приведена аналитика инноваций в ключевых областях: робототехнике, военном машиностроении, в сенсорных системах, военной логистике. Проведено сравнение России с другими странами, в частности по робототехнике описан опыт США и Германии. В области машиностроения рассмотрен опыт России, США и Южной Кореи. Приведена статистика военных расходов 20 стран. The article considers the place of innovation in the digital economy. The trends in the development of innovations in the military-industrial complex are considered. The analytics of innovations in key areas: robotics, military engineering, in sensor systems, military logistics. Russia is compared with other countries, in particular, the experience of the USA and Germany is described in robotics. In the field of engineering, the experience of Russia, the USA and South Korea is considered. Statistics of military spending of 20 countries are given.

A Conceptual Framework of the Relationship between Institutional Framing and Innovativeness

2015 ◽  
pp. 100-122
Author(s):  
Anna Szopa ◽  
Justyna Bandola
Keyword(s):  
South Korea ◽  
Conceptual Framework ◽  
The Usa ◽  
Institutional Network ◽  
The Relationship

This chapter's objective is to analyze the institutional networks of the spin-off companies. To meet this objective cases of three universities are being evaluated and compared. The comparison of cases from the USA, Denmark and South Korea suggests that the institutional network has a significant impact on the development of the spin-off company. The role of different agents (for example universities) change with time during different stages of the development of the spin-off. The study suggests that there are certain similarities between different institutional networks, including the dependence on context, importance of intermediaries and similar roles of the institutions within the networks.

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