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International Journal of Sediment Research 2016年第3期31卷 257-263页

作者： Un Ji Eun-kyung jang Gwonhan Kim Hydro Science and Engineering Research Institute Korea Institute of Civil Engineering and Building Technology

The effects of sedimentation reduction at the Nakdong River Estuary Barrage(NREB) in Korea were quantitatively analyzed with respect to different sediment control methods using the calibrated and validated two-dimensional *** countermeasures of sediment dredging,sediment flushing,channel geometry change,and a combination of flushing and channel geometry change were examined for the approach channel of the *** flood event and channel geometries of the 3.8 km section upstream of the NREB surveyed before and after dredging in 2007 were used for modeling *** a result,the half of sediments dredged in 2007 could be eliminated naturally by floods without *** numerical simulation of sediment flushing indicated that the deposition height decreased in the entire simulation section with the minimum and maximum reductions from 0.3 in to1.3 m in deposition *** channel contraction method produced quantitatively the largest amount of sedimentation reduction and sediment flushing and dredging *** reduction by a combination of flushing and channel contraction was up 10%compared to the individual method of channel contraction.

关键词： Channel contraction Nakdong River Estuary Barrage Sediment dredging Sediment flushing Sedimentation reduction

Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging

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Light(Science & Applications) 2020年第1期9卷 1742-1748页

作者： Kisoo Kim kyung-Won jang Jae-Kwan Ryu Ki-Hun Jeong Department of Bio and Brain Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Republic of Korea KAIST Institute for Health Science and Technology KAISTDaejeon 34141Republic of Korea Unmanned/Robotic Systems Lab. LIG Nex1 Co.LtdSeongnam 13488Republic of Korea

Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturised imaging ***,we report an ultrathin arrayed camera inspired by insect eye structures for high-contrast and super-resolution *** ultrathin camera features micro-optical elements(MOEs),i.e.,inverted microlenses,multilayered pinhole arrays,and gap spacers on an image *** MOE was fabricated by using repeated photolithography and thermal *** fully packaged camera shows a total track length of 740μm and a field-of-view(FOV)of 73°.The experimental results demonstrate that the multilayered pinhole of the MOE allows high-contrast imaging by eliminating the optical crosstalk between *** integral image reconstructed from array images clearly increases the modulation transfer function(MTF)by~1.57 times compared to that of a single channel image in the ultrathin *** ultrathin arrayed camera provides a novel and practical direction for diverse mobile,surveillance or medical applications.

关键词： resolution high camera

Hydrogen-bonded cation-composition-engineered color-stable blue PeLEDs

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Science Bulletin 2021年第21期66卷 2159-2161,M0003页

作者： Fengjun Chun kyung Yeon jang Tae-Woo Lee Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea School of Chemical and Biological Engineering Seoul National UniversitySeoul 08826Republic of Korea Institute of Engineering Research.Research Institute of Advanced Materials.Nano Systems Institute Seoul National UniversitySeoul 08826Republic of Korea

Perovskite light-emitting diodes(PeLEDs)have been considered to be the most promising candidate for solid-state lighting and high-definition full-color display due to their attractive properties such as tunable emission wavelengths,narrow full width at half maximum(FWHM),and high photoluminescence quantum yield(PLQY)[1–3].The external quantum efficiencies(EQEs)of greenand red-emitting Pe LEDs have exceeded 20%,rocketing toward the theoretical limit[4,5],but the blue Pe LEDs still suffer from the obstacles of low efficiency and poor operational stability,which largely overshadows their real applications and industrialscale adoption.

关键词： tunable quantum attractive

Investigation on the Relationship in IVD angle, Ferguson＇s angle and Lumbar lordotic angle in LBP Patient with Acute Lateral Tortipelvis 4th lumbar

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世界中医骨科杂志 2007年第1期9卷 35-37页

作者： Hyung-Ho Lim Yun-kyung Song Gun jang Dept. of Oriental Rehabilitation Medicine College of Oriental Medicine Kyung-Won University

Ⅰ.Introduction: The human spine is the functional unit of vertebrae stacked on top of each other and has structure which is able to bend the *** whole functional unit consists of two parts; an anterior part consists of two vertebrae separated by intervertebral disc and a posterior part consists of facet *** whole vertebral column is balanced on the movable pelvic, and the movement of pelvic influences on the spine so that it determines body posture.

关键词：腰椎脊柱前凸角低位背部疼痛急性侧面骨盆扭转第四腰椎椎间盘突出角相关性

Investigation on the Relationship in Acute Lateral Tortipelvis and Breaks in Low Back Pain Patient

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世界中医骨科杂志 2007年第1期9卷 32-34页

作者： Hyung-Ho Lim Yun-kyung Song Gun jang Dept. of Oriental Rehabilitation Medicine College of Oriental Medicine Kyung-Won University

Ⅰ.Introduction: Back pain is common as among the entire population in the world, more than 90% of people suffer over *** reasons are psychogenic, visceral, neurogenic, vasogenic, vertebral, and back pain because of v... 详细信息

关键词：急性侧面骨盆扭转骨盆断裂低位背部疼痛相关性

Structural Change in the Contemporaneous Linear Returns-Earnings Relation After 1997 Financial Crisis in Korea

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Structural Change in the Contemporaneous Linear Returns-Earn...

大林姬鼠两亚种线粒体DNA细胞色素b基因和控制区的序列多样性(英文)

中国会计学会2005年学术年会

作者： Jong-Seo Choi Ji-kyung jang Pusan National University

＜正＞We examine the long-run relationships between accounting earnings and stock returns over the past 20 *** motivation behind the study came from the controversial evaluation of the accounting reforms in Korea after the 1997 financial crisis,particularly in terms of improved quality of accounting *** observations from Korea Stock Exchange listed companies we show that the contemporaneous linear returns-earnings relation has changed after the accounting reforms in the late *** association between annual earnings and returns appears to have strengthened in the years after 1997 relative to the prior *** from Ryan and Zarowin（2003）,we also show that the changes in the association between annual earnings and returns are partly explained by the changes in asymmetry and lags *** specifically,annual earnings increasingly reflect good and bad news in an asymmetric fashion and have stronger association with lagged price changes surrounding financial crisis.

关键词： returns-earnings relations Asian financial crisis accounting reforms asymmetry effect lags effect

来源： cnki会议评论

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兽类学报 2010年第3期30卷 256-263页

作者： Hung Sun Koh kyung Hee jang 王金星 Bae Keun Lee Nam Jung Park Department of Biology Chungbuk National Universitycheongju361763 山东大学生命科学学院济南250100

为了研究大林姬鼠两亚种(韩国的指名亚种及中国东北和内蒙古地区的东北亚种)线粒体DNA的变异程度并确定朝鲜亚种的分类地位,我们分别将来自韩国和中国东北长白山地区的两亚种的线粒体DNA的细胞色素b基因和控制区进行了测序分析。我们将... 详细信息

为了研究大林姬鼠两亚种(韩国的指名亚种及中国东北和内蒙古地区的东北亚种)线粒体DNA的变异程度并确定朝鲜亚种的分类地位,我们分别将来自韩国和中国东北长白山地区的两亚种的线粒体DNA的细胞色素b基因和控制区进行了测序分析。我们将测序所得到细胞色素b基因序列与来自基因库的大林姬鼠5个亚种的相应的单倍型进行了分析,结果显示大林姬鼠可分为4个类群[类群1:韩国大林姬鼠指名亚种;类群2:中国长白山和内蒙古地区的东北亚种、俄罗斯外加贝尔的majuculus亚种;类群3:中国长春的东北亚种、俄罗斯Primorye(俄罗斯远东地区)rufulus亚种、俄罗斯库页岛(俄罗斯远东地区)和日本北海道地区的giliacus亚种;类群4:中国黑龙江海林地区的东北亚种]。线粒体的控制区序列分析显示韩国指名亚种也不同于中国东北地区的东北亚种。本研究的类群1,2和3与Serizawaetal.(2002)的研究的K、S和R的分支相对应。这表明韩国指名亚种(类群1和分支K)的线粒体DNA与其他类群不同。另外,我们还发现在细胞色素b基因构建的系统树中,东北亚种可以与类群2(分支S)及类群3(分支R的不同亚种聚合在一起。我们认为线粒体DNA的母性遗传与两个相邻亚种的个体之间的种内杂交造成了基于细胞色素b序列对东北亚种的聚类分析结果与基于形态学特征的分类结果的不一致。因此,我们提出对这些显示出核苷酸序列多样性的东北亚种不能只用细胞色素b的数据进行亚种分类,还应该结合形态学和核DNA特征进行进一步分析。最后,我们还发现韩国的指名亚种的细胞色素b序列在平均距离16.93%的基础上不同于来自基因库的***。Jones and Johnson(1965)指出了韩国的大林姬鼠在形态上的区别,所以我们认为韩国的大林姬鼠指名亚种***是一种具有形态和遗传特异性的地方亚种。

关键词： DNA系统学细胞色素b基因控制区大林姬鼠

黑线姬鼠两亚种(中国东北地区及俄罗斯远东地区的东北亚种和朝鲜半岛的朝鲜亚种)的线粒体DNA序列缺少趋异性(英文)

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兽类学报 2011年第1期31卷 84-89页

作者： Hung Sun Koh Shar Seter 张明海王金星 kyung Hee jang Davaa Bazarsad Department of Biology Chungbuk Notional University Cheongju 361 - 763 Korea Department of Molecular Biology National University of Mongolia Ulaanbaatar 210646 Mongolia 东北林业大学野生动物资源学院哈尔滨150040 山东大学生命科学学院济南250100

为了检测黑线姬鼠两亚种(来自中国东北地区、俄罗斯远东地区的东北亚种和朝鲜半岛的朝鲜亚种)线粒体DNA的变异水平并确定朝鲜亚种的分类地位,我们测序分析了两亚种的线粒体DNA细胞色素b的部分序列(1 054 bp)和控制区的部分序列(860 bp)... 详细信息

为了检测黑线姬鼠两亚种(来自中国东北地区、俄罗斯远东地区的东北亚种和朝鲜半岛的朝鲜亚种)线粒体DNA的变异水平并确定朝鲜亚种的分类地位,我们测序分析了两亚种的线粒体DNA细胞色素b的部分序列(1 054 bp)和控制区的部分序列(860 bp),并与基因库中黑线姬鼠相应的单倍型序列进行了比较。可以看出东北亚种的序列显示出某些分异,可以被分为2或3个亚群,所以我们提出需要更多标本的DNA分析来确定东北亚种的分类地位。另外,来自韩国的朝鲜亚种的序列,与来自中国东北地区龙江和哈尔滨的东北亚种的两个亚群相似(1个亚群是细胞色素b的两个单倍型,另1个是控制区的两个单倍型),表明基于线粒体DNA序列的遗传多样性与现今基于形态特征对这些姬鼠的分类所得结果是不一致的。因此我们认为来自韩国的朝鲜亚种是一个只在形态特异上不同于东北亚种的地方亚种,我们建议通过其他DNA标记来进一步验证其亚种地位。我们还认为朝鲜半岛不是最近的冰川期黑线姬鼠残遗种的保护区。

关键词： DNA系统学细胞色b基因控制区黑线姬鼠韩国中国东北

韩国豹猫与其它豹猫及西表猫之间的遗传分化：基于IRBP、12S rRNA和Cyt b序列的分析(英文)

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兽类学报 2014年第4期34卷 374-380页

作者： KOH Hung Sun KWEON Gu Hee HAM Eui Jeong jang kyung Hee YANG Beong Guk AN Na Hyeon Department of Biology Chungbuk University Cheongju 361-763 Korea National Institute of Environmental Research Incheon 404 - 708 Korea

利用韩国豹猫的IRBP、12S rRNA和细胞色素b(Cyt b)序列,并将其与Gen Bank中的豹猫及西表猫的上述基因进行比较,以此来重新分析韩国豹猫和其它豹猫及西表猫之间的遗传分化情况。首先,我们从18只韩国豹猫的IRBP、12S rRNA和Cyt b序列分析... 详细信息

利用韩国豹猫的IRBP、12S rRNA和细胞色素b(Cyt b)序列,并将其与Gen Bank中的豹猫及西表猫的上述基因进行比较,以此来重新分析韩国豹猫和其它豹猫及西表猫之间的遗传分化情况。首先,我们从18只韩国豹猫的IRBP、12S rRNA和Cyt b序列分析中分别检测到6个等位基因、1个单倍型和3个单倍型,推测曾经发生在豹猫种群的瓶颈事件可能是本文发现的不同分子标记之间存在基因型丢失差异的原因。基于Cyt b序列分析,证实东亚的豹猫形成一个单独的进化枝,本文得到的Cyt b序列和之前发布结果支持一个分类理论,即认为东亚的豹猫就是东北森林猫。我们发现在IRBP、12S rRNA基因上,韩国豹猫和西表猫存在相同的序列,支持将西表猫和豹猫视为同一物种。

关键词：种群瓶颈核基因和线粒体DNA 豹猫 DNA系统分类学西表猫韩国

Artificial optoelectronic synapse based on spatiotemporal irradiation to source-sharing circuitry of synaptic phototransistors

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InfoMat 2024年第2期6卷 131-141页

作者： Seungho Song Changsoon Choi Jongtae Ahn Je-Jun Lee Jisu jang Byoung-Soo Yu Jung Pyo Hong Yong-Sang Ryu Yong-Hoon Kim Do kyung Hwang Center for Opto-Electronic Materials and Devices Post-Silicon Semiconductor InstituteKorea Institute of Science and Technology(KIST)SeoulRepublic of Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Center for Spintronics Post-Silicon Semiconductor InstituteKorea Institute of Science and Technology(KIST)SeoulRepublic of Korea Division of Nanoscience&Technology KIST SchoolUniversity of Science and Technology(UST)SeoulRepublic of Korea School of Biomedical Engineering Korea UniversitySeoulRepublic of Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulRepublic of Korea

To overcome the intrinsic inefficiency of the von Neumann architecture,neuromorphic devices that perform analog vector–matrix multiplication have been highlighted for achieving power-and time-efficient data *** particular,artificial synapses,of which conductance should be programmed to represent the synaptic weights of the artificial neural network,have been intensively researched to realize neuromorphic ***,inspired by excitatory and inhibitory synapses,we develop an artificial optoelectronic synapse that shows both potentiation and depression characteristics triggered only by optical *** design of the artificial optoelectronic synapse,in which excitatory and inhibitory synaptic phototransistors are serially connected,enables these characteristics by spatiotemporally irradiating the phototransistor channels with optical ***,a negative synaptic weight can be realized without the need for electronic components such as *** such attributes,the artificial optoelectronic synapse is demonstrated to classify three digits with a high recognition rate(98.3%)and perform image preprocessing via analog vector-matrix multiplication.

关键词： amorphous oxide semiconductor analog processing artificial synapse neuromorphic optoelectronics