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Neural Network-Based State of Charge Estimation Method for Lithium-ion Batteries Based on Temperature

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Intelligent Automation & Soft Computing 2023年第5期36卷 2025-2040页

作者： Donghun Wang jonghyun lee Minchan Kim Insoo lee School of Electronic and Electrical Engineering Kyungpook National UniversityDaegu41566Korea

Lithium-ion batteries are commonly used in electric vehicles,mobile phones,and *** batteries demonstrate several advantages,such as environmental friendliness,high energy density,and long ***,battery overcharging and overdischarging may occur if the batteries are not monitored *** causesﬁre and explosion casualties,and overdischar-ging causes a reduction in the battery capacity and *** addition,the internal resistance of such batteries varies depending on their external temperature,elec-trolyte,cathode material,and other factors;the capacity of the batteries decreases with *** this study,we develop a method for estimating the state of charge(SOC)using a neural network model that is best suited to the external tem-perature of such batteries based on their *** our simulation,we acquired data at temperatures of 25°C,30°C,35°C,and 40°*** on the tem-perature parameters,the voltage,current,and time parameters were obtained,and six cycles of the parameters based on the temperature were used for the *** data to verify the proposed method were obtained through a discharge experiment conducted using a vehicle driving *** experi-mental data were provided as inputs to three types of neural network models:mul-tilayer neural network(MNN),long short-term memory(LSTM),and gated recurrent unit(GRU).The neural network models were trained and optimized for the speciﬁc temperatures measured during the experiment,and the SOC was estimated by selecting the most suitable model for each *** experimental results revealed that the mean absolute errors of the MNN,LSTM,and GRU using the proposed method were 2.17%,2.19%,and 2.15%,respec-tively,which are better than those of the conventional method(4.47%,4.60%,and 4.40%).Finally,SOC estimation based on GRU using the proposed method was found to be 2.15%,which was the most accurate.

关键词： Lithium-ionbattery state of charge multilayer neural network long short-term memory gated recurrent unit vehicle driving simulator

Metastatic pancreatic solitary fibrous tumor: A case report

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World Journal of Clinical Cases 2023年第35期11卷 8416-8424页

作者： Kiyoun Yi jonghyun lee Dong Uk Kim Division of Gastroenterology Department of Internal MedicinePusan National University HospitalBusan 49241South Korea Biomedical Research Institute Pusan National University HospitalBusan 49241South Korea

BACKGROUND Solitary fibrous tumor(SFT)is a rare mesenchymal tumor that is most commonly found in the pleura but can also originate from non-pleural *** the nonpleural localizations,the pancreas is extremely *** particular,metastasis to the pancreas from the central nervous system(CNS)is extremely rare,with only two cases reported so *** report a case of recurrence in the pancreas 14 years after the initial complete surgical removal of a tumor in the *** SUMMARY A 68-year-old man with a past medical history of recurrent meningeal hemangiopericytoma,currently referred to as SFT,presented to the hospital with *** patient was first diagnosed with an 8cm-sized meningeal hemangiopericytoma fourteen years ago and underwent osteoplastic *** 16 mo,imaging showed recurrence and he underwent gamma knife radiosurgery(GKRS).2 years later,imaging showed recurrence again leading to a second GKRS.5 years later,recurrence was again suspected leading to a second *** then 3 years had passed,and imaging showed a 3.5cm-sized mass lesion on the pancreatic head with obstruction of the pancreatic and bile *** with fine-needle aspiration biopsy was done preoperatively and aided in the diagnosis of *** patient underwent pyloruspreserving *** findings of the resected pancreatic specimen,consistent with the previously resected brain specimen,confirmed the diagnosis of *** The rarity and lack of knowledge about SFTs make suspecting and diagnosing this disease *** believe that a report of metastatic pancreatic SFT from the CNS will contribute to a better understanding of this rare disease.

关键词： Solitary fibrous tumor Hemangiopericytoma Pancreas Metastasis Central nervous system Case report

Removal of intrahepatic bile duct stone could reduce the risk of cholangiocarcinoma: A single-center retrospective study in South Korea

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World Journal of Clinical Cases 2024年第5期12卷 913-921页

作者： Tae In Kim Sung Yong Han jonghyun lee Dong Uk Kim Division of Gastroenterology Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea Department of Internal Medicine Pusan National UniversityCollege of MedicineYangsan 50612South Korea

BACKGROUND Intrahepatic duct(IHD)stones are among the most important risk factors for cholangiocarcinoma(CCC).Approximately 10%of patients with IHD stones develop CCC;however,there are limited studies regarding the effect of IHD stone removal on CCC *** To investigate the association between IHD stone removal and CCC *** We retrospectively analyzed 397 patients with IHD stones at a tertiary referral center between January 2011 and December *** CCC occurred in 36 of the 397 enrolled *** univariate analysis,chronic hepatitis B infection(11.1%vs 3.0%,P=0.03),carbohydrate antigen 19-9(CA19-9,176.00 vs 11.96 II/mL,P=0.010),stone located in left or both lobes(86.1%vs 70.1%,P=0.042),focal atrophy(52.8%vs 26.9%,P=0.001),duct stricture(47.2%vs 24.9%,P=0.004),and removal status of IHD stone(33.3%vs 63.2%,Pupper normal limit,carcinoembryonic antigen>upper normal limit,stones located in the left or both lobes,focal atrophy,and complete removal of IHD stones without recurrence were independent factors influencing CCC ***,the type of removal method was not associated with CCC *** Complete removal of IHD stones without recurrence could reduce CCC risk.

关键词： Intrahepatic bile duct stone Cholangiocarcinoma Percutaneous transhepatic cholangioscopy Endoscopic retrograde cholangiopancreatography Carbohydrate antigen 19-9

Hwabyung Experiences Among Korean Immigrant Women in the United States

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Fudan Journal of the Humanities and Social Sciences 2016年第2期9卷 325-349页

作者： jonghyun lee Anna Martin-Jearld Kate Robinson Susan Price School of Social Work Bridgewater State University 95 Burrill Avenue BridgewaterMA 02324 USA Taunton/Attleboro Community Counseling of Bristol County Taunton MA USA Boston Veterans Health Administration Pocasset MA USA

Hwabyung is an indigenous psychiatric illness commonly found among Korean women. Using hwabyung, this article describes the psychological ramifications of immigration experiences among Korean immigrant women in the United States. Data collected from an anonymous survey of adult Korean immigrant women （n = 143） were used for a statistical analysis. The findings highlight the significant effects of self-esteem, social support, financial hardship, and family cohesion on the changes in the hwabyung symptoms among Korean immigrant women. Based on the findings, the implications for practice and future study are discussed. Also discussed are the global significance of migrant women and their mental health issues.

关键词： Hwabyung Korean immigrant women Acculturation Stress Coping resources

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美国的社会福利政策及其社会工作

杭州师范大学学报（社会科学版） 2013年第6期35卷 99-104页

作者： [韩]李钟玄美国马萨诸塞州水桥大学社会工作学院 MA02325USA

美国的社会福利政策基于体制论和助残论,其最早的法律体现的是殖民地济贫法(包括20世纪的《社会保障法》和"贫困家庭救助法案"项目);社会工作则体现了美国社会福利政策的当代建设性价值观,即通过专业工作的服务来提升弱势群体应对困难... 详细信息

美国的社会福利政策基于体制论和助残论,其最早的法律体现的是殖民地济贫法(包括20世纪的《社会保障法》和"贫困家庭救助法案"项目);社会工作则体现了美国社会福利政策的当代建设性价值观,即通过专业工作的服务来提升弱势群体应对困难、改善生活的精神能质。

关键词：社会福利政策社会工作赋权功能

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Effect of heat treatment on LPSO morphology and mechanical properties of Mg-Zn-Y-Gd alloys

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Journal of Magnesium and Alloys 2020年第4期8卷 1120-1127页

作者： Hongxin Liao jonghyun Kim Taekyung lee Jiangfeng Song Jian Peng Bin Jiang Fusheng Pan College of Materials Science&Engineering Chongqing University400044China National Engineering Research Center for Magnesium Alloys Chongqing University400044China School of Mechanical Engineering Pusan National UniversityBusan 46241Korea

The mechanical properties and microstructure were investigated under different Zn content and heat treatment conditions in a Mg-Zn-YGd cast alloy.A part of the long period stacking order(LPSO)phases transformed to W-M^ZnaRE?phases with an increase in Zn content from 0.9 at.%to 1.8 at.%,and the ultimate tensile strength(UTS)increased from 229 MPa to 248 *** solution treatment at 480°C,the content of the LPSO phase and strength sharply decreased in the Mg-1.8Zn-0.8Y-0.8Gd alloy,whereas this change was not significantly observed in the Mg-0.9Zn-O.8Y-O.8Gd *** solution treatment,the elongation significantly improved and the UTS sharply decreased in both *** lamellar and filminess LPSO phases were observed with aging treatment at 200℃.Moreover,the strengthening efficiency of lamellar and filminess LPSO phases was lower than that of the block LPSO ***,the UTS of the T6 state was lower than that of the as-cast alloy.

关键词： Mg alloy LPSO Age behavior Mechanical properties Heat treatment Strengthening efficiency

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Tailoring strength-ductility balance of caliber-rolled AZ31 Mg alloy through subsequent annealing

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Journal of Magnesium and Alloys 2020年第1期8卷 163-171页

作者： Taein Kong Byung Je Kwak jonghyun Kim Jeong Hun lee Sung Hyuk Park Ji Hoon Kim Young Hoon Moon Hyun Sik Yoon Taekyung lee School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Advanced Forming Process R&D Group Korea Institute of Industrial TechnologyUlsan 44413Republic of Korea College of Materials Science and Engineering Chongqing UniversityChongqing 400044China School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Department of Naval Architecture and Ocean Engineering Pusan National UniversityBusan 46241Republic of Korea

Recently,multi-pass caliber rolling has been shown to be effective for Mg *** study investigated the effect of subsequent annealing on the mechanical properties of a caliber-rolled AZ31 Mg alloy to modulate the strength-ductility *** annealing gave rise to different trends in mechanical properties depending on the temperature ***-temperature annealing(T≤473 K)exhibited a typical trade-off relationship,where an increase in annealing temperature resulted in increased ductility but decreased strength and *** a heat treatment did not degrade the high strength-ductility balance of the caliber-rolled alloy,suggesting that the mechanical properties could be tailored for different potential *** contrast,high-temperature annealing(T>473 K)caused a simultaneous deterioration in strength,hardness,and ductility with increasing annealing *** differences are discussed in terms of the varying microstructural features under the different investigated annealing regimes.

关键词： AZ31 Mg alloy Caliber rolling Annealing Grain growth Mechanical improvement Twinning

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A modular microfluidic system based on a multilayered configuration to generate large-scale perfusable microvascular networks

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Microsystems & Nanoengineering 2021年第1期7卷 63-75页

作者： Tao Yue Da Zhao Duc T.T.Phan Xiaolin Wang Joshua jonghyun Park Zayn Biviji Christopher C.W.Hughes Abraham P.lee Department of Biomedical Engineering University of CaliforniaIrvineCAUSA School of Mechatronic Engineering and Automation Shanghai UniversityShanghaiChina Department of Molecular Biology and Biochemistry University of CaliforniaIrvineCAUSA Department of Micro/Nano Electronics Shanghai Jiao Tong UniversityShanghaiChina National Key Laboratory of Science and Technology for Micro/Nano Fabrication Shanghai Jiao Tong UniversityShanghaiChina Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education Shanghai Jiao Tong UniversityShanghaiChina Department of Electrical Engineering and Computer Science University of CaliforniaIrvineCAUSA. Department of Applied Mathematics-Biology Brown UniversityProvidenceRIUSA. Department of Mechanical and Aerospace Engineering University of CaliforniaIrvineCAUSA

The vascular network of the circulatory system plays a vital role in maintaining homeostasis in the human *** this paper,a novel modular microfluidic system with a vertical two-layered configuration is developed to generate largescale perfused microvascular networks in *** two-layer polydimethylsiloxane(PDMS)configuration allows the tissue chambers and medium channels not only to be designed and fabricated independently but also to be aligned and bonded *** method can produce a modular microfluidic system that has high flexibility and scalability to design an integrated platform with multiple perfused vascularized tissues with high *** medium channel was designed with a rhombic shape and fabricated to be semiclosed to form a capillary burst valve in the vertical direction,serving as the interface between the medium channels and tissue *** and anastomosis at the vertical interface were successfully achieved by using different combinations of tissue chambers and medium *** large-scale microvascular networks were generated and quantified in terms of vessel length and *** leakage of the perfused 70-kDa FITC-dextran confirmed the lumenization of the microvascular networks and the formation of tight vertical interconnections between the microvascular networks and medium channels in different structural *** platform enables the culturing of interconnected,large-scale perfused vascularized tissue networks with high density and scalability for a wide range of multiorgan-on-a-chip applications,including basic biological studies and drug screening.

关键词： interconnection networks configuration

Minimally Invasive Widening of the Facet Joints in Cervical Radiculopathy by Modified Needles： Technical Report

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Journal of Pharmacy and Pharmacology 2015年第6期3卷 285-292页

作者： GeonMok lee HyangJoo lee Yong Suk Kim jonghyun Han EunYong lee HoSueb Song TaeHan Yook JaeSoo Kim KyongHa Cho SeRin Kang SangHoon Yoon Department of Acupotomy LeeGeonmok Wonli Korean Medicine Hospital Seoul 137-829 Republic of Korea Department of Anesthesiology LeeGeonmok Wonli Korean Medicine Hospital Seoul 137-829 Republic of Korea Department of Acupuncture and Moxibustion Kyunghee University Seoul 135-501 Republic of Korea Department of Pharmacology Wonkwang University Iksan 570-749 Republic of Korea Department of Acupuncture and Moxibustion Semyung University Chungju 380-080 Republic of Korea Department of Acupuncture and Moxibustion Gachon University Seongnam 461-701 Republic of Korea Department of Acupuncture and Moxibustion Woosuk University Wanju 565-701 Republic of Korea Department of Acupuncture and Moxibustion Daegu Hanny University Daegu 706-828 Republic of Korea

Surgical treatment and ESI （epidural steroid injection） are widely used forms of treatment for cervical radiculopathy but they are controversial and burdensome for patients. To relief pain fast without side effects, we devised a new minimally invasive treatment method that widens the facet joints to decompress nerve roots and release the muscle spasm in cervical radiculopathy with acupuncture needles with blunt tip and mini-scalpel, and named it modified acupuncture procedure. MAP （Modified acupuncture procedure） was administered for 37 patients （mean age = 53.1 years, follow-up = 14.2 months） with cervical radiculopathy who did not recover from 4 weeks of nonsurgical treatment. We analyzed clinical outcomes of patients before and after the procedure through VAS （Visual Analogue Scale） and NDI （Neck Disability Index）. On average, patients received 1.4 MAP （modified acupuncture procedures）. The VAS score difference on the day after procedure and at 1 year follow-up was 36.8 ± 26.5 （from 60.1 ± 25.3 at the baseline to 25.3 ± 17.8 at the reading）（P 〈 0.01） and 31.0 ± 30.4 （29.0 ± 21.8 at the reading） respectively. The NDI value dropped by 19.9 ± 18.3 （from 37.2 ± 19.7 at the baseline to 17.2 ± 15.0 at the reading）（P〈 0.01） on 1 year follow up. MAP was found to have clinical efficacy for cervical radiculopathy.

关键词： Minimally invasive procedure facet joint cervical radiculopathy acupuncture acupotomy adhesion muscle spasm.