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Design Development of Advanced Power Reactor 1400

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Design Development of Advanced Power Reactor 1400

A novel combined multi-battery dataset based approach for enhanced prediction accuracy of data driven prognostic models in capacity estimation of lithium ion batteries

第13届太平洋地区核能大会

作者： Y.s.choi s.J.Cho D.w.Jerng Center for Advanced Reactors Development Nuclear Environment Technology Institute Korea Hydro ＆ Nuclear Power Co. Ltd. 103-16 Munji-Dong Yuseong-Gu Daejon 305-380 Korea Center for Advanced Reactors Development Nuclear Environment Technology Institute Korea Hydro ＆ Nuclear Power Co. Ltd. 103-16 Munji-Dong Yuseong-Gu Daejon 305-380 Korea Center for Advanced Reactors Development Nuclear Environment Technology Institute Korea Hydro ＆ Nuclear Power Co. Ltd. 103-16 Munji-Dong Yuseong-Gu Daejon 305-380 Korea

＜正＞Advanced Power Reactor 1400 （APR1400） has been developed since 1992 asone of long-term national R＆D projects in Korea. APR1400 is an evolutionary typenuclear power plant of a 1400 Mwe class, which upgrades the safety and economiccompetitiveness of nuclear power incorporating up-to-date advanced technologywhile stands on the proven basis of the experience from currently operating nuclearpower plants. Major advanced features.w.re focused on the safety enhancement andthe incorporation of digital technology was made in the control room design. To verifysome of the new design features of APR1400, experimental programs.w.re ***, the system and layout were optimized for cost reduction through the reflectionof the construction and operation experiences of currently operating plants in *** accordance with the design development, the licensing review of the standarddesign was performed and design certification was issued. The first of APR1400 is inthe construction plan to be commissioned in september 2010. The site is preparednext the Kori site, the east-south seashore of Korea, where the first nuclear powerplant in Korea was installed.

关键词： ALwR APR1400 KNGR URD

来源： cnki会议评论

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能源与人工智能(英文) 2021年第3期5卷 141-149页

作者： Vijay Mohan Nagulapati Hyunjun Lee Dawoon Jung salaisargunan s Paramanantham Boris Brigljevic Yunseok choi Hankwon Lim school of Energy and Chemical Engineering UNISTUlsanRepublic of Korea Xynergypower Corp Gyeonggi-doRepublic of Korea Department of Energy Engineering UNISTUlsanRepublic of Korea

To ensure smooth and reliable operations of battery systems,reliable prognosis.w.th accurate prediction of state of Health of lithium ion batteries is of utmost ***,battery degradation is a complex challenge involving many electrochemical reactions at anode,separator,cathode and electrolyte/electrode ***,there is significant effect of the operating conditions on the battery *** machine learning tech-niques have been applied to estimate the capacity and state of Health of lithium ion batteries to ensure reliable operation and timely *** this paper,we study the Gaussian Process Regression(GPR)and support Vector Machine(sVM)model-based approaches in estimating the capacity and state of Health of ***-tery capacity and state of Health estimations are carried out using GPR and sVM models and the predictions comparatively studied for accuracy based on RMsE *** prediction accuracy is further compared with re-spect to single sensor and multi sensor ***,a combined multi battery data set model is used to improve the prediction *** the data of multiple batteries.w.th similar operating conditions for training a model resulted in higher prediction accuracy.

关键词： Capacity estimation state of health Gaussian process regression support vector machine Lithium ion battery

The Early Emotional Responses and Central Issues of People in the Epicenter of the COVID-19 Pandemic: An Analysis from Twitter Text Mining

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International Journal of Mental Health Promotion 2023年第1期25卷 21-29页

作者： Eun-Joo choi Yun-Jung choi Department of Nursing Kyungin Women’s UniversityIncheon21041South Korea Red Cross College of Nursing Chung-Ang UniversitySeoul06974South Korea

This study aimed to explore citizens’emotional responses and issues of interest in the context of the coronavirus disease 2019(COVID-19)*** dataset comprised 65,313 tweets.w.th the location marked as New York *** data collection period was four days of tweets.w.en New York City imposed a lockdown order due to an increase in conﬁrmed *** analysis.w.s performed using R *** emotional responses in tweets.w.re analyzed using the Bing and NRC(National Research Council Canada)*** tweets’central issue was identiﬁed by Text Network *** tweets.w.re classiﬁed as either positive or negative,the negative sentiment was *** the NRC dictionary,eight emotional classiﬁcations.w.re devised:“trust,”“fear,”“anticipation,”“sadness,”“anger,”“joy,”“surprise,”and“disgust.”These results indicated that citizens showed negative and trusting emotional reactions in the early days of the ***,citizens showed a strong interest in overcoming and coping with other people such as social *** were concerned about the conﬁrmation of COVID-19 infection status and *** should be made to ensure citizens’psychological stability by promptly informing them of the status of infectious disease management and the route of infection.

关键词： COVID-19 community mental health emotional responses text mining Twitter

Uptake of prostate cancer screening and associated factors among Chinese men aged 50 or more: a population-based survey

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Cancer Biology & Medicine 2014年第1期11卷 56-63页

作者： winnie K.w.so Kai Chow choi winnie P.Y.Tang Paul C.w.Lee Ann T.Y.shiu simone s.M.Ho Helen Y.L.Chan wendy w.T.Lam william B.Goggins Carmen w.H.Chan The Nethersole school of Nursing The Chinese University of Hong Kong Department of Community Medicine The University of Hong Kong The Jockey Club school of Public Health and Primary Care The Chinese University of Hong Kong

Objective: To investigate the uptake rate of prostate specific antigen(PsA) testing among Hong Kong Chinese males aged 50 or above, and identify factors associated with the likelihood of undergoing a PsA ***: A population-based telephone survey was conducted in Hong Kong in 2007. The survey covered demographic information, perceived health status, use of complementary therapy, cancer screening behavior, perceived susceptibility to cancer and family history of cancer. Descriptive statistics, percentages and logistic regression analysis.w.re used for data ***: A total of 1,002 men aged 50 or above took part in the study(response rate =67%), and the uptake rate of PsA testing was found to be 10%. Employment status, use of complementary therapy, perceiving regular visits to a doctor as good for health and the recommendations of health professionals.w.re significant factors associated with PsA ***: The uptake rate of PsA testing in the study population was very low. Among all the factors identified, recommendations from health professionals had the strongest association with the uptake of PsA testing, and they should therefore take an active role in educating this population about cancer prevention and detection.

关键词： Prostatic neoplasms early detection of cancer prostate-specific antigen (PsA) population-based survey

Black esophagus.w.th concomitant candidiasis developed after diabetic ketoacidosis

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world Journal of Gastroenterology 2007年第42期13卷 5662-5663页

作者： Yong Hwan Kim si Young choi Department of Thoracic and Cardiovascular surgery Uijeongbu St. Mary's Hospital The Catholic University of Korea College of Medicine Seoul 480-821 Korea Department of Thoracic and Cardiovascular surgery Uijeongbu St. Mary’s Hospital The Catholic University of Korea College of Medicine Seoul 480-821 Korea

Black esophagus is a very rare disease and its pathogenesis has been *** esophagus developed concomitantly with candidiasis after diabetic ketoacidosis has not been reported *** report a case who developed esophageal stricture after the treatment of black esophagus and thus balloon dilatation was performed several times but failed,hence,surgical treatment was performed.

关键词： Esophagus Candidiasis Diabetic ketoacidosis surgery

A case of gouty arthritis following percutaneous radiofrequency ablation for hepatocellular carcinoma

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world Journal of Gastroenterology 2010年第6期16卷 778-781页

作者： Dae Hee choi Hyo-suk Lee Department of Internal Medicine Kangwon National University College of Medicine Department of Internal Medicine and Liver Research Institute Seoul National University College of Medicine

Percutaneous radiofrequency thermal ablation(RFA) is considered an effective technique for providing local control in the majority of Hepatocellular carcinoma(HCC) *** RFA is generally well tolerated,recent studies have reported complications associated with *** describe a case of acute gouty arthritis in a 71-year-old man with chronic renal failure who was treated with RFA for a HCC lesion and who had hepatitis B-associated cirrhosis and mild renal *** surveillance of the patient detected a 3.5 cm HCC *** the patient had declined surgery,RFA was chosen for *** the third post-procedural day,the laboratory results showed increases in his uric acid and potassium levels.w.ich were compatible with a tumor lysis syndrome. On the 6th post-procedural day,the patient complained of new right knee *** joint aspiration revealed monosodium urate monohydrate *** made the diagnosis of acute gouty arthritis arising from tumor lysis and liver infarction caused by HCC ablation,which was aggravated by acute renal insufficiency. After adequate hydration and administration of oral colchicines,the patient's right knee pain subsided andthe uric acid serum level returned to *** is the first described case of acute gouty arthritis after RFA for a HCC lesion in a patient with underlying chronic renal *** avoid hyperuricemia and an acute attack of gout after RFA therapy for HCC,early identification of patients at risk is.w.rranted,such as those with a large tumor,rapid tumor growth,and renal insufficiency,and preventative measures should be considered.

关键词： Radiofrequency thermal ablation Hepatocellular carcinoma Gout Tumor lysis syndrome Complications

Flow-based queue management for fairness control in high-bandwidth network

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science China(Information sciences) 2016年第6期59卷 261-263页

作者： wonjun choi Ramneek sEKHON woojin sEOK Department of science and Technology Information science Korea University of Science & Technology Department of Advanced KREONET Application support Korea Institute of Science and Technology Information

Dear editor,with the development of information equipment and growth of broadband network,the progress of Internet has changed from the network with modem speed in the past to the *** essential problem in the use of the network in a variety of fields is to use the network resource efficiently distributing the limited bandwidth[1].If congestion occurs in high-bandwidth network,slow rate flow and fast rate flow will experience

关键词： Flow-based queue management for fairness control in high-bandwidth network high

Nonlinear description of Yang-Mills cosmology： cosmic inflation and the accompanying Hannay's angle

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Chinese Physics C 2017年第6期41卷 115-121页

作者： Yacine Bouguerra Mustapha Maamache Jeong Ryeol choi Laboratoire de Physique Quantique et systèmes Dynamiques Faculté des SciencesUniversite Ferhat Abbas Setif 1 Setif 19000 Algeria Département de Physique Facultédes Sciences Université de Jijel BP 98Ouled Aissa Jijel 18000 Algeria Department of Radiologic Technology Daegu Health College Yeongsong-ro 15 Buk-gu Daegu 41453 Republic of Korea

Hannay＇s angle is a classical analogue of the ＂geometrical phase factor＂ found by Berry in his research on the quantum adiabatic theorem. This classical analogue is defined if closed curves of constant action variables return to the same curves in phase space after an adaibatic evolution. Adiabatic evolution of Yang-Mills cosmology, which is described by a time-dependent quartic oscillator, is investigated. Phase properties of the Yang-Mills fields are analyzed and the corresponding Hannay＇s angle is derived from a rigorous evaluation. The obtained Hannay＇s angle shift is represented in terms of several observable parameters associated with such an angle shift. The time evolution of Hannay＇s angle in Yang-Mills cosmology is examined from an illustration plotted on the basis of numerical evaluation,and its physical nature is addressed. Hannay＇s angle, together with its quantum counterpart Berry＇s phase, plays a pivotal role in conceptual understanding of several cosmological problems and indeed can be used as a supplementary probe for cosmic inflation.

关键词： Yang-Mills cosmology Hannay angle time-dependent quartic Hamiltnian inflation

Long-term changes and periodicity of ice phenomena in the high mountain Lake Morskie Oko(Tatra Mountains.w.stern Carpathians)

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Journal of Mountain science 2022年第11期19卷 3063-3075页

作者： POCIAsK-KARTECZKA Joanna NIECKARZ Zenon choiŃsKI Adam Institute of Geography and spatial Management Jagiellonian UniversityKraków 30387Poland Marian smoluchowski Institute of Physics Jagiellonian UniversityKraków 30348Poland Institute of Physical Geography and Environmental Planning Adam Mickiewicz University in PoznańPoznań61680Poland

High montain lakes are regarded as sensitive indicators of environmental changes in local and global *** recent years,climate change has considerablely influenced the timing of ice phenomena in these *** objective of the paper is an investigation of long-term changes and periodicity of ice phenomena in high mountain Lake Morskie Oko(1392.8 m a.s.l.)located in the Tatra *** the period *** study employed the Lomb-scargle periodogram,linear regression modelling for temporal trends,correlation analysis,parameters of variability,and flashiness *** of the duration of ice phenomena(~5.4 y)and ice cover on the lake(~13.5 y)was observed,although both are statistically *** cover duration has been interrupted several times by winter thaws after 1996 whereas no such events had been reported *** trend towards a delayed appearance of ice phenomena reaches 4.0 d·decade^(-1)(pserved trend towards an earlier ice phenomena disappearance reaches 5.1 d·decade^(-1)(psults in a decline of the number of days.w.th ice phenomena on Lake Morskie Oko at a rate of 9.0 d·decade^(-1)(pskie Oko has been decreasing at a rate of 10.4 d·decade^(-1).It is attributed to later freezeup(3.9 d·decade^(-1),psing trend of average annual air temperature(0.4°C·decade^(-1),ps observed.A statistically significant correlation is recorded between ice phenomena and ice cover(beginning,end,duration),average annual air temperature,average air temperature of three summer months(June,July,August),and average air temperature of the six months period from June to *** air temperature induces growing heat resources accumulated in the lake water in the summer and autumn seasons,potentially causing later initiation of ice phenomena in the *** is no statistically significant r

关键词： Ice phenomena Lakes High mountains Climate warming East-Central Europe