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Robot-assisted laparoscopic pyeloureterostomy for ureteropelvic junction rupture sustained in a traffic accident:A case report

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World Journal of Clinical Cases 2020年第22期8卷 5802-5808页

作者： Si Hyun kim woong Bin kim Jae Heon kim Sang Wook Lee Department of Urology Soonchunhyang University Cheonan HospitalCheonan 31151South Korea Department of Urology Soonchunhyang University Bucheon HospitalBucheon 14584South Korea Department of Urology Soonchunhyang University Seoul HospitalSoonchunhyang University Medical CollegeSeoul 04401South Korea Department of Urology Soonchunhyang University Bucheon HospitalSoonchunhyang University School of MedicineBucheon 14584South Korea

BACKGROUND Ureteral reconstruction is a highly technical type of laparoscopic or open *** incidence of ureteral injury is low;however,ureteral injuries tend to be *** surgery for urinary reconstructive surgery is growing in popularity,which has made procedures such as pyeloplasty,ureteroureterostomy,and ureteroneocystostomy possible,with minimal damage to the *** the best of our knowledge,this is the first report of robot-assisted laparoscopic pyeloureterostomy in Korea,in a 17-year-old female patient with a ureteral *** SUMMARY The patient,a 17-year-old girl without previous medical history,was presented at the emergency room and complained of abdominal and back *** in the right upper quadrant was observed on physical *** in the right perirenal space was observed without abdominal organ injuries on the initial enhanced abdomen computed tomography(CT)*** injury was not suspected at this *** patient was stabilized via conservative treatment,but complained of right flank pain 3 wk later and revisited the emergency *** enhanced abdominal CT scan revealed a huge urinoma in the right perirenal space with hydronephrosis of the right *** and antegrade pyelography were *** and discontinuity of the ureter were found.A rupture of the ureteropelvic junction was diagnosed and reconstructive surgery was *** 3 mo,the patient did not complain of any symptoms without any abnormal radiologic *** This case report discusses the safety and effectiveness of this minimal invasive procedure as an alternative to conventional open or laparoscopic surgery.

关键词： Robot surgical procedure Ureteral injuries Minimal invasive surgical procedures Reconstructive surgical procedures Urology Case report

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Optimal Spatial Allocation of Initial Attack Resources for Firefighting in the Republic of Korea Using a Scenario Optimization Model

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Journal of Mountain Science 2014年第2期11卷 323-335页

作者： Yohan LEE Byungdoo LEE kyung Ha kim Korea Rural Economic Institute 117-3 Hoegi-ro Dongdeamun-guSeoul 130-710 South Korea Korea Forest Research Institute Hoegiro 57 Dongdaemun-guSeoul 130-712 South Korea

【Title】 This study explores the optimal spatial allocation of initial attack resources for firefighting in the Republic of Korea. To improve the effectiveness of Korean initial attack resources with a range of policy goals, we create a scenario optimization model that minimizes the expected number of fires not receiving a predefined response. In this study, the predefined response indicates the number of firefighting resources that must arrive at a fire before the fire escapes and becomes a large fire. We use spatially explicit GIS-based information on the ecology, fire behavior, and economic characterizations important in Korea. The data include historical fire events in the Republic of Korea from 1991 to 2007, suppression costs, and spatial information on forest fire extent. Interviews with forest managers inform the range of we address in the decision model. Based on the geographic data, we conduct a sensitivity analysis by varying the parameters systematically. Information on the relative importance of the components of the settings helps us to identify “rules of thumb” for initial attack resource allocations in particular ecological and policy settings.

关键词： Spatial allocation Initial attack Firefighting The Republic of Korea Senario optimization

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Near-infrared laser irradiation of a multilayer agar-gel tissue phantom to induce thermal effect of traditional moxibustion

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Journal of Innovative Optical Health Sciences 2018年第6期11卷 21-32页

作者： Jiyong Cho Bibin Prasad Jung kyung kim Department of Mechanical Engineering Graduate School Kookmin UniversitySeoul 02707Republic of Korea Department of Radiation Oncology SMG-Seoul National University Boramae Medical Center Seoul 07061 Republic of Korea School of Mechanical Engineering and Department of Integrative Biomedical Science and Engineering Graduate School Kookmin University Seoul 02707Republic of Korea

Traditional moxibustion therapy can stimulate heat and blood-vessel expansion and advance blood *** the present study,a novel noncontact-type thermal therapeutic system was developed using a near-infrared laser *** device allows direct interaction of infrared laser light with the skin,thereby facilitating a controlled temperature distribution on the skin and the deep tissues below the *** using a tissue-mimicking phantom as a substitute for real skin,the most important optical and thermal parameters are the absorption/attenuation coefficient,thermal conductivity,and specic *** found that these parameters can be manipulated by varying the agar-gel ***,a multilayer tissue-mimicking phantom was fabricated using different agar-gel *** imaging and thermocouples were used to measure the temperature distribution inside the phantom during laser *** temperature increased with the increase in the agar-gel concentration and reached a maximum value under the tissue phantom *** induce a similar thermal effect of moxibustion therapy,controlled laser-irradiation parameters such as output power,wavelength and pulse width were obtained from further analysis of the temperature *** the known optothermal properties of the patient's skin,the temperature distribution inside the tissue was manipulated by optimizing the laser *** study can contribute to patient-specic thermal therapy in clinics.

关键词： Laser–tissue interaction tissue phantom moxibustion hyperthermia bioheat transfer

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Rectal tonsil:A case report and literature review

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World Journal of Gastroenterology 2015年第8期21卷 2563-2567页

作者： Joung Boom Hong Hyung Wook kim Dae Hwan Kang Cheol woong Choi Su Bum Park Dong Jun kim Byoung Hoon Ji kyung Won Koh Department of Internal Medicine Pusan National University School of Medicine Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital

The rectal tonsil,a reactive proliferation of lymphoidtissue located in the rectum,is ***,benign lymphoid hyperplasia of the rectum is usuallycharacterized by large lymphoid follicles with activegerminal centers and a narrow surrounding mantlezone and marginal *** lesion is benign,but must be differentiated from the polypoid type of mucosaassociated lymphoid tissue *** the current paper,we present a case of rectal tonsil in a 59-yearold *** describe the endoscopic ultrasound imaging findings with literature review.

关键词： Rectum Tonsil Lymphoid hyperplasia Rectal tonsil L

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How to deliver palliative care for patients with management in decompensated cirrhosis

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Hepatobiliary Surgery and Nutrition 2023年第4期12卷 576-579页

作者： Beom kyung kim Department of Internal medicine Yonsei University College of MedicineSeoulRepublic of Korea Institute of Gastroenterology Yonsei University College of MedicineSeoulRepublic of Korea Yonsei Liver Center Severance HospitalSeoulRepublic of Korea

Palliative care is defined as multidisciplinary,specialized medical care that meets the needs of patients with serious illnesses and their caregivers from the standpoints of the physical,spiritual,and emotional levels(1).Nowadays,it is also considered to be one of the fundamental care programs for patients with decompensated cirrhosis,as has also been demonstrated in the field of other cancers(2).Recently,the guidance regarding“palliative care and symptom-based management in decompensated cirrhosis”had been published in 2022 by the American Association for the Study of Liver Diseases(AASLD)(3).

关键词： Palliative care decompensation cirrhosis

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Spatio-temporal variability in sea surface wind stress near and off the east coast of Korea

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Acta Oceanologica Sinica 2005年第1期24卷 107-114页

作者： NAM SungHyun kim Young Ho PARK kyung-Ae kim Kuh Ocean Laboratory/RIO School of Earth and Environmental Sciences Seoul National University Seoul 151-742 KoreaOcean Laboratory/RIO School of Earth and Environmental Sciences Seoul National University Seoul 151-742 KoreaOcean Laboratory/RIO School of Earth and Environmental Sciences Seoul National University Seoul 151-742 KoreaOcean Laboratory/RIO School of Earth and Environmental Sciences Seoul National University Seoul 151-742 Korea

Sea surface wind stress variabilities near and off the east coast of Korea, are examined using 7 kinds of wind datasets from measurements at 2 coastal (land) stations and 2 ocean buoys,satellite scatterometer (QuikSCAT), and global reanalyzed products (ECMWF,NOGAPS,and NCEP/NCAR). Temporal variabilities are analyzed at 3 frequency bands; synoptic (2-20 d), intra-seasonal (20-90 d),and seasonal (>90 d).Synoptic and intra-seasonal variations are predominant near and off the Donghae City due to the passage of the mesoscale weather system. Seasonal variation is caused by southeastward wind stress during Asian winter monsoon. The sea surface wind stress from reanalyzed *** and KMA-B measurements off the coast show good agreement in the magnitude and direction,which are strongly aligned with the alongshore *** the land-based sites,wind stresses are much weaker by factors of 3-10 due to the mountainous landmass on the east parts of Korea *** first EOF modes(67%-70%) of wind stresses from reanalyzed and QuikSCAT data have similar structures of the strong southeastward wind stress in winter along the coast but show different curl structures at scales less than 200 km due to the orographic *** second EOF modes (23%-25%) show southwestward wind stress in every September along the east coast of the North Korea

关键词： sea surface wind stress spatio-temporal variability monsoon seasonal intra-seasonal synoptic band orographic effect

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Improving Method of Anomaly Detection Performance for Industrial IoT Environment

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Computers, Materials & Continua 2022年第9期72卷 5377-5394页

作者： Junwon kim Jiho Shin Ki-woong Park Jung Taek Seo Department of Information Security Engineering Gachon UniversitySeongnam13120Korea Police Science Institute Korea National Police UniversityAsan31539Korea SysCore Lab. Sejong UniversitySeoul05006Korea Department of Computer Engineering Gachon UniversitySeongnam13120Korea

Industrial Control System(ICS),which is based on Industrial IoT(IIoT),has an intelligent mobile environment that supports various mobility,but there is a limit to relying only on the physical security of the ICS *** to various threat factors that can disrupt the workflow of the IIoT,machine learning-based anomaly detection technologies are being presented;it is also essential to study for increasing detection performance to minimize model errors for promoting stable ICS *** this paper,we established the requirements for improving the anomaly detection performance in the IIoT-based ICS environment by analyzing the related *** that,we presented an improving method of the performance of a machine learning model specialized for IIoT-based ICS,which increases the detection rate by applying correlation coefficients and clustering;it provides a mechanism to predict thresholds on a ***,we adopted the HAI dataset environment that actively reflected the characteristics of IIoT-based ICS and demonstrated that performance could be improved through comparative experiments with the traditional method and our proposed *** presented method can further improve the performance of commonly applied error-based detection techniques and includes a primary method that can be enhanced over existing detection techniques by analyzing correlation coefficients between features to consider feedback between ICS *** can contribute to improving the performance of several detection models applied in ICS and other areas.

关键词： Industrial IoT industrial control system anomaly detection clustering algorithm correlation coefficient

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Multi-objective optimization of the kinematic parameters of fish-like swimming using a genetic algorithm method

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Journal of Hydrodynamics 2019年第2期31卷 333-344页

作者： Mahdi Abolfazli Esfahani Hamid Reza Karbasian kyung Chun kim Department of Electrical and Electronics Engineering Nanyang Technological UniversitySingapore School of Mechanical Engineering Pusan National UniversityBusan 46241Korea

This paper investigates the kinematic optimization of fish-like ***,an experiment was performed to detect the motion of the fish tail foil of a fish ***,the kinematic swimming model was verified experimentally using an image processing *** model includes two rotational motions:caudal foil motion and foil-pitching *** kinematic model allows us to evaluate the influence of motion trajectory in the optimization *** optimize the propulsive efficiency and thrust,a multi-objective genetic algorithm was employed to handle with kinematic,hydrodynamic,and propulsion *** results show that the caudal length has a significant effect on the performance of the flapping foil in fish-like swimming,and its influence on the motion trajectory may increase the propulsive efficiency to as high as 98%in ideal *** maximum thrust coefficient can also reach approximately 3 in ideal conditions.

关键词： Fish-like swimming fish robot hydrodynamics optimization genetic algorithm

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Densification simulation of compacted Al powders using multi-particle finite element method

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中国有色金属学会会刊：英文版 2009年第B9期19卷 68-75页

作者： kyung-Hun LEE Jung-Min LEE Byung-Min kim School of Mechanical Engineering Pu san National University

The powder compaction simulations were performed to demonstrate deformation behavior of particles and estimate the effect of different punch speeds and particle diameters on the relative density of powder by a multi-particle finite element model(MPFEM). Individual particle discretized with a finite element mesh allows for a full description of the contact mechanics. In order to verify the reliability of compaction simulation by MPFEM, the compaction tests of porous aluminum with average particle size of 20 μm and 3 μm were performed at different ram speeds of 5, 15, 30 and 60 mm/min by MTS servo-hydraulic tester. The results show that the slow ram speed is of great advantage for powder densification in low compaction force due to sufficient particle rearrangement and compaction force increases with decrease in average particle size of aluminum.

关键词：粉末压实粉末粒子多孔铝有限元法模拟致密化平均粒径有限元模型

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TinyML-Based Classification in an ECG Monitoring Embedded System

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Computers, Materials & Continua 2023年第4期75卷 1751-1764页

作者： Eunchan kim Jaehyuk kim Juyoung Park Haneul Ko Yeunwoong kyung Department of Intelligence and Information Seoul National UniversitySeoul08826Korea Nexon Korea Cop. SeongnamKyungki13487Korea Advanced CP Lab.Samsung Electronics SuwonKyungki16677Korea Department of Electronic Engineering Kyung Hee UniversityYonginKyungki17104Korea Division of Information&Communication Engineering Kongju National UniversityCheonanChungcheongnam31080Korea

Recently, the development of the Internet of Things (IoT) hasenabled continuous and personal electrocardiogram (ECG) monitoring. In theECG monitoring system, classification plays an important role because it canselect useful data (i.e., reduce the size of the dataset) and identify abnormaldata that can be used to detect the clinical diagnosis and guide furthertreatment. Since the classification requires computing capability, the ECGdata are usually delivered to the gateway or the server where the classificationis performed based on its computing resource. However, real-time ECG datatransmission continuously consumes battery and network resources, whichare expensive and limited. To mitigate this problem, this paper proposes atiny machine learning (TinyML)-based classification (i.e., TinyCES), wherethe ECG monitoring device performs the classification by itself based onthe machine-learning model, which can reduce the memory and the networkresource usages for the classification. To demonstrate the feasibility, afterwe configure the convolutional neural networks (CNN)-based model usingECG data from the Massachusetts Institute of Technology (MIT)-Beth IsraelHospital (BIH) arrhythmia and the Physikalisch Technische Bundesanstalt(PTB) diagnostic ECG databases, TinyCES is validated using the TinyMLsupportedArduino prototype. The performance results show that TinyCEScan have an approximately 97% detection ratio, which means that it has greatpotential to be a lightweight and resource-efficient ECG monitoring system.

关键词： Holter ECG arduino internet of things(IoT) TinyML

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