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A Precise Localization Method for a High Speed Mobile Robot Using iGS and Dual Compass

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Journal of Measurement Science and Instrumentation 2011年第3期2卷 276-282页

作者： seo-young HWANG Yo-sub HWANG jang-myung LEE Dept.of Electrical Engineering Pusan National University

This paper proposes a precise localization algorithm for a quickly moving mobile *** order to localize a mobile robot with active beacon sensors,a relatively long time is needed,since the distance to the beacon is measured by transmitting time of the ultrasonic *** measurement time does not cause a high error rate when the mobile robot moves ***,with an increase of the mobile robot’s speed,the localization error becomes too high to use for accurate mobile robot ***,in this research into high speed mobile robot operations,instead of using two active beacons for localization,an active beacon and dual compass are utilized to localize the mobile *** new approach resolves the high localization error caused by the speed of the mobile *** performance of the precise localization algorithm is verified by comparing it to the conventional method through real-world experiments.

关键词：移动机器人定位方法指南针 IGS 测量时间移动速度定位算法定位误差

The Spatial Effects of Antenna Configuration in a Large Area Inductively Coupled Plasma System for Flat Panel Displays

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Plasma Science and Technology 2014年第8期16卷 758-766页

作者： seon-Geun OH young-Jun LEE Jae-Hong JEON Jong-Hyeon seo Hee-Hwan CHOE School of Electronics Telecommunication and Computer EngineeringKorea Aerospace University Department of Material Science and Engineering Korea Aerospace University

Spatial distributions of plasma parameters such as electron density, electron temperature and electric potential were investigated using a commercial simulation software （COMSOLTM） to predict the effects of antenna configuration in a large area inductively cou- pled plasma （ICP） system for flat panel displays. Nine planar antenna sets were evenly placed above a ceramic window. While the electron density was influenced by both the input current and gas pressure, the electron temperature and electric potential were dominantly affected by the gas pressure.

关键词： plasma ICP antenna configuration simulation

Performance evaluations on inner vs. outer decomposition first parallel join algorithms for two nested loop joins

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Journal of Central South University 2014年第10期21卷 3873-3882页

作者： seo-young NOH Heejun YOON Il-Yeon YEO Yoon-su JEONG Hyungwoo PARK National Institute of Supercomputing and Networking Korea Institute of Science and Technology Information Department of Information Communication Engineering Mokwon University

Two popular traditional join algorithms and their parallel versions are introduced. When designing join algorithms in serial computing environment, decomposing inner relation is considered as the right direction to save disk I/Os. However, two different decomposition algorithms are compared, such as inner vs. outer decomposition first algorithms for tuple-based and block-based nested loop joins, showing that the proposed approach is 20% better than general approach. Also lemmas are proved, when we have to use the outer decomposition first parallel join algorithms.

关键词：并行连接算法分解算法环连接绩效评估嵌套计算环境串行磁盘

The cortical activation pattern during bilateral arm raising movements

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Neural Regeneration Research 2017年第2期12卷 317-320页

作者： Sung Ho jang Jung Pyo seo Seung-Hyun Lee Sang-Hyun Jin Sang seok Yeo Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University Daegu Republic of Korea Robot System Research Division Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea Department of Physical Therapy College of Health Sciences Dankook University Cheonan-si Chungnam Republic of Korea

Bilateral arm raising movements have been used in brain rehabilitation for a long time. However, no study has been reported on the effect of these movements on the cerebral cortex. In this study, using functional near infrared spectroscopy（f NIRS）, we attempted to investigate cortical activation generated during bilateral arm raising movements. Ten normal subjects were recruited for this study. f NIRS was performed using an f NIRS system with 49 channels. Bilateral arm raising movements were performed in sitting position at the rate of 0.5 Hz. We measured values of oxyhemoglobin and total hemoglobin in five regions of interest： the primary sensorimotor cortex, premotor cortex, supplementary motor area, prefrontal cortex, and posterior parietal cortex. During performance of bilateral arm raising movements, oxyhemoglobin and total hemoglobin values in the primary sensorimotor cortex, premotor cortex, supplementary motor area, and prefrontal cortex were similar, but higher in these regions than those in the prefrontal cortex. We observed activation of the arm somatotopic areas of the primary sensorimotor cortex and premotor cortex in both hemispheres during bilateral arm raising movements. According to this result, bilateral arm raising movements appeared to induce large-scale neuronal activation and therefore arm raising movements would be good exercise for recovery of brain functions.

关键词： nerve regeneration neuronal activation bilateral arm raising functional NIRS motor control corticospinal tract corticoreticulospinal tract neural regeneration

Regulation of c-SMAC formation and AKT-mTOR signaling by the TSG101-IFT20 axis in CD4^(+)T cells

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Cellular & Molecular Immunology 2023年第5期20卷 525-539页

作者： Jiung Jeong In Kang Yumin Kim Keun Bon Ku jang Hyun Park Hyun-Jin Kim Chae Won Kim Jeongwoo La Hi Eun Jung Hyeon Cheol Kim young Joon Choi Jaeho Kim Joon Kim Heung Kyu Lee Graduate School of Medical Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Internal Medicine Seoul National University HospitalSeoul 03080Republic of Korea Department of Biological Sciences KAISTDaejeon 34141Republic of Korea Department of Convergent Research of Emerging Virus Infection Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea.

CD4^(+)T cells play major roles in the adaptive immune system,which requires antigen recognition,costimulation,and cytokines for its elaborate *** studies have provided new insight into the importance of the supramolecular activation cluster(SMAC),which comprises concentric circles and is involved in the amplification of CD4^(+)T cell ***,the underlying mechanism of SMAC formation remains poorly ***,we performed single-cell RNA sequencing of CD4^(+)T cells left unstimulated and stimulated with anti-CD3 and anti-CD28 antibodies to identify novel proteins involved in their *** found that intraflagellar transport 20(IFT20),previously known as cilia-forming protein,was upregulated in antibody-stimulated CD4^(+)T cells compared to unstimulated CD4^(+)T *** also found that IFT20 interacted with tumor susceptibility gene 101(TSG101),a protein that endocytoses ubiquitinated T-cell *** interaction between IFT20 and TSG101 promoted SMAC formation,which led to amplification of AKT-mTOR ***,IFT20-deficient CD4^(+)T cells showed SMAC malformation,resulting in reduced CD4^(+)T cell proliferation,aerobic glycolysis,and cellular ***,mice with T-cell-specific IFT20 deficiency exhibited reduced allergen-induced airway ***,our data suggest that the IFT20-TSG101 axis regulates AKT-mTOR signaling via SMAC formation.

关键词： CD4^(+)T cell Intraflagellar transport 20 Tumor susceptibility gene 101 AKT-mTOR signaling Asthma Supramolecular activation cluster

Enhancement parameters of contrast-enhanced computed tomography for pancreatic ductal adenocarcinoma: Correlation with pathologic grading

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World Journal of Gastroenterology 2020年第28期26卷 4151-4158页

作者： Woorim seo young Chul Kim seon Jeong Min Sang Min Lee Department of Radiology Hallym University Dongtan Sacred Heart HospitalGyeonggi-do 18450South Korea Department of Radiology Hallym University Sacred Heart HospitalGyeonggido 14068South Korea

BACKGROUND Pancreatic ductal adenocarcinoma(PDA)is a malignancy with a high mortality rate and short survival *** conventional computed tomography(CT)has been worldwide used as a modality for diagnosis of PDA,as CT enhancement pattern has been thought to be related to tumor angiogenesis and pathologic grade of *** To evaluate the relationship between the pathologic grade of pancreatic ductal adenocarcinoma and the enhancement parameters of contrast-enhanced *** In this retrospective study,42 patients(Age,mean±SD:62.43±11.42 years)with PDA who underwent surgery after preoperative CT were *** radiologists evaluated the CT images and calculated the value of attenuation at the aorta in the arterial phase and the pancreatic phase(VAarterial and VApancreatic)and of the tumor(VTarterial and VTpancreatic)by finding out four regions of *** between the tumor and the aorta enhancement on the arterial phase and the pancreatic phase(TARarterial and TARpancreatic)was figured out through dividing VT arterial by VAarterial and VTpancreatic by ***-to-aortic enhancement fraction(TAF)was expressed as the ratio of the difference between attenuation of the tumor on arterial and parenchymal images to that between attenuation of the aorta on arterial and pancreatic *** Kruskal-Wallis analysis of variance and Mann-Whitney U test for statistical analysis were *** Forty-two PDAs(23 men and 19 women)were divided into three groups:Welldifferentiated(n=13),moderately differentiated(n=21),and poorly differentiated(n=8).TAF differed significantly between the three groups(P=0.034)but TARarterial(P=0.164)and TARpancreatic(P=0.339)did *** median value of TAF for poorly differentiated PDAs(0.1011;95%CI:0.01100-0.1796)was significantly higher than that for well-differentiated PDAs(0.1941;95%CI:0.1463-0.3194).CONCLUSION Calculation of TAF might be useful in predicting the pathologic grade of PDA.

关键词： Computed tomography Pancreatic ductal carcinoma Diagnostic imaging Clinical pathology Neoplasm grading Prognosis

Oral administration of red ginseng powder fermented with probiotic alleviates the severity of dextran-sulfate sodium-induced colitis in a mouse model

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Chinese Journal of Natural Medicines 2017年第3期15卷 192-201页

作者： jang Sun-Hee PARK Jisang KIM Sae-Hae CHOI Kyung-Min KO Eun-Sil CHA Jeong-Dan LEE young-Ran jang Hyonseok jang Yong-Suk Department of Molecular Biology and Institute for Molecular Biology and Genetics Chonbuk National UniversityJeonju 54896Korea Department of Bioactive Material Sciences and Research Center of Bioactive Materials Chonbuk National UniversityJeonju 54896Korea Department of Efficacy Research Institute of Jinan Red GinsengJinan 55442Korea Department of Mathematics Sogang UniversitySeoul 04107Korea Department of Oral Maxillofacial Surgery Korea University Ansan HospitalAnsan 15355Korea

Red ginseng is a well-known alternative medicine with anti-inflammatory *** exerts pharmacological effects through the transformation of saponin into metabolites by intestinal *** that intestinal microflora vary among individuals,the pharmacological effects of red ginseng likely vary among *** order to produce homogeneously effective red ginseng,we prepared probiotic-fermented red ginseng and evaluated its activity using a dextran sulfate sodium(DSS)-induced colitis model in *** analysis of intestinal damage indicated that the administration of probiotic-fermented red ginseng significantly decreased the severity of colitis,compared with the control and the activity was higher than that induced by oral administration of ginseng powder or probiotics *** analysis of the levels of serum IL-6 and TNF-α,inflammatory biomarkers that are increased at the initiation stage of colitis,were significantly decreased in probiotic-fermented red ginseng-treated groups in comparison to the control *** levels of inflammatory cytokines and mR NAs for inflammatory factors in colorectal tissues were also significantly decreased in probiotic-fermented red ginseng-treated ***,oral administration of probiotic-fermented red ginseng reduced the severity of colitis in a mouse model,suggesting that it can be used as a uniformly effective red ginseng product.

关键词： Colitis Fermentation Inflammation Probiotics Red ginseng

Critical factors to inhibit water-splitting side reaction in carbon-based electrode materials for zinc metal anodes

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Carbon Energy 2022年第6期4卷 1080-1092页

作者： Dong Hyuk Kang Eunji Lee Beom Sik Youn Son Ha Jong Chan Hyun Juhee Yoon Dawon jang Kyoung Sun Kim Hyungsub Kim Sang Moon Lee Sungho Lee Hyoung-Joon Jin Hyung-Kyu Lim young Soo Yun KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulSeongbuk-guSouth Korea Division of Chemical Engineering and Bioengineering Kangwon National UniversityChuncheonGangwon-doSouth Korea Department of Eco-Polymer Science and Engineering Inha UniversityIncheonMichuhol-guSouth Korea Carbon Composite Materials Research Center Institute of Advanced Composite MaterialsKorea Institute of Science and Technology(KIST)Jeollabuk-doSouth Korea Department of Chemical and Biological Engineering Korea UniversitySeoulSeongbuk-guSouth Korea Neutron Science Division Korea Atomic Energy Research Institute(KAERI)DaejeonYuseong-guSouth Korea Research Center for Materials Analysis Korea Basic Science Institute(KBSI)DaejeonYuseong-guSouth Korea Department of Integrative Energy Engineering Korea UniversitySeoulSeongbuk-guSouth Korea

Zinc metal anodes(ZMA)have high theoretical capacities(820 mAh g−1 and 5855 mAh cm−3)and redox potential(−0.76 V *** hydrogen electrode),similar to the electrochemical voltage window of the hydrogen evolution reaction(HER)in a mild acidic electrolyte system,facilitating aqueous zinc batteries competitive in next-generation energy storage ***,the HER and byproduct formation effectuated by water-splitting deteriorate the electrochemical performance of ZMA,limiting their *** this study,a key factor in promoting the HER in carbon-based electrode materials(CEMs),which can provide a larger active surface area and guide uniform zinc metal deposition,was investigated using a series of threedimensional structured templating carbon electrodes(3D-TCEs)with different local graphitic orderings,pore structures,and surface *** ultramicropores of CEMs are the determining critical factors in initiating HER and clogging active surfaces by Zn(OH)2 byproduct formation,through a systematic comparative study based on the 3D-TCE series *** the 3D-TCEs had a proper graphitic structure with few ultramicropores,they showed highly stable cycling performances over 2000 cycles with average Coulombic efficiencies of≥99%.These results suggest that a well-designed CEM can lead to high-performance ZMA in aqueous zinc batteries.

关键词： aqueous batteries carbon electrode hydrogen evolution reaction multivalent ion zinc metal anode

Long-term efficacy and safety of ExPress implantation for treatment of open angle glaucoma

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International Journal of Ophthalmology(English edition) 2017年第9期10卷 1379-1384页

作者： Geun young Lee Chong Eun Lee Kyoo Won Lee Sam seo Department of Ophthalmology Cheil Eye Hospital1 Ayang-roDong-guDaegu 41196Korea Department of Ophthalmology Keimyung UniversityDongsan Medical CenterDongsan-dongJung-guDaegu41931Korea

AIM：To compare the long-term efficacy and safety of Ex Press implantation and standard trabeculectomy in patients with primary open angle glaucoma（POAG）.METHODS：In this retrospective study,we compared 17eyes treated by Ex Press implantation with 23 eyes treated by *** was assessed according to the relevant intraocular pressure（IOP）values and success rates during the first year of *** corneal endothelial cell loss was also ***：The number of antiglaucoma medications and the IOP reduction were similar between the 2 groups during the follow-up *** the mean IOP was similar,the IOP-fluctuation rate during the early postoperative period was significantly lower in the ExPress group than in the trabeculectomy group（P=0.038）.A Kaplan-Meier survival curve analysis showed no significant successrate difference between the groups（P=0.810）.The corneal endothelial cell loss rate,moreover,was significantly lower in the Ex Press group（P=0.05）.CONCLUSION：Ex Press implantation compared with trabeculectomy showed similar IOP-reduction and success rates along with lower IOP fluctuation and endothelial cell loss *** this reason,it can be considered to be the treatment of choice for patients with advanced glaucoma or low corneal endothelial cell density.

关键词： primary open angle glaucoma ExPressimplant trabeculectomy