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Design of Authoring Tool for Static and Dynamic Projection Mapping

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Computers, Materials & Continua 2021年第1期66卷 1-16页

作者： Sang-joon Kim Nammee Moon Min Hong Gooman park Yoo-Joo Choi Seoul National University of Science and Technology 172 Gongneung-dongNowon-guSeoulKorea Hoseo University 165 Sechul-ri Baebang-eupAsan-siChungcheongnam-doKorea Soonchunhyang University 336-745Asan-siChungcheongnam-doKorea Seoul Media Institute Technology 661 Deungchon-dongGangseo-guSeoulKorea

This study introduces the design details of a tool to create interactive projection-mapping content in a convenient *** the proposed tool design,a homography-based camera–projector calibration method was applied with the use of red–green–blue-depth images from a Kinect V2 sensor that did not require accurate camera calibration *** addition,the proposed tool simultaneously achieved static projection mapping that projected the image content onto a fixed object,and dynamic projection mapping that projected the image content onto a user’s body,by tracing the moving *** verify the effectiveness of the proposed content-creation tool,users with no programming capabilities were employed to create contents that were projected onto various objects in fixed positions and a user’s body in various poses,thereby analyzing the tool’s ***,the projection accuracy was analyzed at different depth positions,and the projection-mapping accuracy was verified with the use of the proposed method.

关键词： Dynamic projection mapping camera-projector calibration Kinect projection mapping content authoring tool

DYNAMIC PROPERTIES OF AL-ALLOY FOAM BEAM DAMAGED BY COMPRESSIVE FATIGUE

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Acta Mechanica Solida Sinica 2008年第3期21卷 241-246页

作者： Sung-Gaun Kim Ilhyun Kim Amkee Kim Seung-joon Kim Junhong park Division of Mechanical and Automotive Engineering Kongju National University 275 Budae-dongCheonan Chungnam 330-717 Korea Department of Mechanical Engineering Hanyang University Seongdong-Gu Seoul 133-791 Korea

The permanent residual strain in aluminum （Al） alloy foams induced by compressive fatigue gradually increases with the increasing number of loading cycles. Consequently, the progressive shortening of Al-alloy foam degrades the dynamic material performance by the failure and ratcheting of multi-cells in the foam. In this paper, the dynamic properties of Al-alloy foams damaged by compressive fatigue were studied. The beam specimens with various residual strains were made by cyclic compression-compression stress. The dynamic bending modulus and loss factor were evaluated by using a beam transfer function method. As a result, the dynamic bending stiffness of Al-alloy foam turned out to be decreased due to damage while the loss factor was improved because of the increasing energy dissipation of such factors as cracked cell walls formed during the shortening process of the foam. The loss factor shows a manifest dependence on the fatigue residual strain.

关键词： Aluminum foam fatigue dynamic stiffness loss factor

S/S+ Band Tunable Thulium Doped Fiber Laser Anchored on 50 GHz ITU-T Grid

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光学学报 2003年第S1期23卷 381-382页

作者： Jonghan park Seong joon Ahn Hoseong Seo Namkyoo park Seoul National University Rm 301-1101 School of EECS Shilim Kwanak Seoul KoreaDivision of Electronics Sunmoon University.Korean Research Institute of Standards and ScienceSeoul National University Rm 301-1101 School of EECS Shilim Kwanak Seoul Korea

We demonstrate a S/S+ band tunable thulium doped fiber laser (TTDFL) anchored on 50GHz ITU-T Grid. Over 57nm of tuning range (1454.9 ~ 1512.0 nm) covering most of the Thulium bandwidth and more than 8dBm output power ... 详细信息

关键词： ITU Band Tunable Thulium Doped Fiber Laser Anchored on 50 GHz ITU-T Grid nm FFP S/S TDF on been FSR for mode GHz than

GIGANTEA Shapes the Photoperiodic Rhythms of Thermomorphogenic Growth in Arabidopsis

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Molecular Plant 2020年第3期13卷 459-470页

作者： Young-joon park Jae Young Kim June-Hee Lee Byoung-Doo Lee Nam-Chon Paek Chung-Mo park Department of Chemistry Seoul National UniversitySeoul 08826Korea Department of Plant Science Seoul National UniversitySeoul 08826Korea Plant Genomics and Breeding Institute Seoul National UniversitySeoul 08826Korea These authors contributed equally to this article

Plants maintain their internal temperature under environments with fluctuating temperatures by adjusting their morphology and architecture,an adaptive process termed ***,the rhythmic patterns of plant thermomorphogenesis are governed by day-length ***,it remains elusive how thermomorphogenic rhythms are regulated by ***,we show that warm temperatures enhance the accumulation of the chaperone GIGANTEA(Gl),which thermostabilizes the DELLA protein,REPRESSOR OF ga1-3(RGA),under long days,thereby attenuating PHYTOCHROME INTERACTING FACTOR 4(PIF4)-mediated *** contrast,under short days,when Gl accumulation is reduced,RGA is readily degraded through the gibberellic acid-mediated ubiquitination-proteasome pathway,promoting thermomorphogenic *** data indicate that the GI-RGA-PIF4 signaling module enables plant thermomorphogenic responses to occur in a day-length-dependent *** propose that the Gl-mediated integration of photoperiodic and temperature information shapes thermomorphogenic rhythms,which enable plants to adapt to diel fluctuations in day length and temperature during seasonal transitions.

关键词： thermomorphogenesis day length Gl RGA PIF4

Modeling and Design of H-Infinity Controller for Piezoelectric Actuator LIPCA

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Journal of Bionic Engineering 2010年第2期7卷 168-174页

作者： Gigun Lee Kwanwoo You Taesam Kang Kwang joon Yoon Jeong Oog Lee Jung Keun park Department of Aerospace Information Engineering Konkuk University

We proposed a dynamic model identification and design of an H-Infinity （i.e.H） controller using a LightweightPiezo-Composite Actuator （LIPCA）.A second-order dynamic model was obtained by using input and output data, and applyingan identification *** identified model coincides well with the real *** reduce the resonating mode that istypical of piezoelectric actuators, a notch filter was used.A feedback controller using the Hcontrol scheme was designed basedon the identified dynamic model; thus, the LIPCA can be easily used as an actuator for biomemetic applications such as artificialmuscles or macro/micro positioning in *** control algorithm was implemented using a microprocessor, analogfilters, and power amplifying *** simulation and experimental results demonstrate that the proposed control algorithmworks well in real environment, providing robust performance and stability with uncertain disturbances.

关键词： piezoelectric actuator model identification H-infinity controller biomimetic artificial muscle LIPCA

Heterostructures in two-dimensional colloidal metal chalcogenides:Synthetic fundamentals and applications

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Nano Research 2019年第8期12卷 1750-1769页

作者： Yuho Min Eunmi Im Geon-Tae Hwang Jong-Woo Kim Cheol-Woo Ahn Jong-Jin Choi byung-Dong Hahn joon-Hwan Choi Woon-Ha Yoon Dong-Soo park Dong Choon Hyun Geon Dae Moon Functional Ceramics Department Powder & Ceramics DivisionKorea Institute of Materials Science (KIMS)ChangwonGyeongnam51508Republic of Korea Department of Polymer Science and Engineering Kyungpook National UniversityDaegu41566Republic of Korea Dongrtam Regional Division Korea Institute of Industrial TechnologyBusan46938Republic of Korea

As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures.

关键词： metal chalcogenide heterostructure anisotropic nanomaterials two-dimensional (2D) nanomaterials solution-based synthesis

Anti-acetylcholinesterase activity of the aglycones of phenolic glycosides isolated from Leonurus japonicus

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Asian Pacific Journal of Tropical Biomedicine 2017年第10期7卷 849-854页

作者： Agung Nugroho Jae Sue Choi joon-Pyo Hong Hee-Juhn park Department of Agro-industrial Technology Faculty of AgricultureLambung Mangkurat UniversityBanjarbaru 70714 Indonesia Department of Food Science and Nutrition Pukyong National UniversityBusan 48513Republic of Korea Department of Pharmaceutical Engineering Sangji UniversityWonju 26339Republic of Korea

Objective: To find the genuine structure with anti-acetylcholinesterase(anti-ACh E) from the phenolic glycosides abundant in Leonurus japonicus(Lamiaceae). The assay for antiACh E activity is often used to lead anti-Alzheimer's ***: The five phenolic glycosides, tiliroside, leonurusoside C, 2’’’-syringoylrutin,rutin, and lavanduliofolioside were isolated from L. japonicus. The activities of the glycosides were relatively low. Seven compounds including p-coumaric acid, caffeic acid, hydroxytyrosol, salidroside, syringic acid, kaempferol, and quercetin, which are produced by the hydrolysis of the five glycosides, were also assayed for anti-ACh E ***: Of those seven compounds, the five compounds other than salidroside and syringic acid exhibited potent anti-ACh E activities. In particular, the IC_(50)s of caffeic acid and quercetin were(1.05 ± 0.19) and(3.58 ± 0.02) mg/m L, respectively. Rutin was the most abundant flavonoid in the extract(9.18 mg/g as measured by HPLC).Conclusion: The substances with potent anti-ACh E were caffeic acid, quercetin, pcoumaric acid, kaempferol, and hydroxytyrosol that can be produced from their glycosides.

关键词： Leonurus japonicus Lamiaceae Acetylcholinesterase Phenolic glycosides Quercetin Caffeic acid

Muscovite nanoparticles mitigate neuropathic pain by modulating the inflammatory response and neuroglial activation in the spinal cord

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Neural Regeneration Research 2020年第11期15卷 2162-2168页

作者： Ju-Young Oh Tae-Yeon Hwang Jae-Hwan Jang Ji-Yeun park Yeonhee Ryu HyeJung Lee Hi-joon park Acupuncture and Meridian Science Research Center Kyung Hee University26 Kyungheedae-roDongdaemun-guSeoulRepublic of Korea Department of Korean Medical Science Graduate School of Korean MedicineKyung Hee UniversitySeoulRepublic of Korea BK21 PLUS Korean Medicine Science Center College of Korean MedicineKyung Hee UniversitySeoulRepublic of Korea College of Korean Medicine Daejeon UniversityDaejeonRepublic of Korea Korean Institute of Oriental Medicine DaejeonRepublic of Korea

Despite numerous efforts to overcome neuropathic pain,various pharmacological drugs often fail to meet the needs and have many side *** is an aluminosilicate mineral that has been reported to have an anti-inflammatory effect,but the efficacy of muscovite for neuropathic pain has not been ***,we assessed whether muscovite nanoparticles can reduce the symptoms of pain by controlling the inflammatory process observed in neuropathic *** analgesic effects of muscovite nanoparticles were explored using partial sciatic nerve ligation model of neuropathic pain,in which one-third to onehalf of the nerve trifurcation of the sciatic nerve was tightly tied to the dorsal *** nanoparticles(4 mg/100μL)was given intramuscularly to evaluate its effects on neuropathic pain(3 days per week for 4 weeks).The results showed that the muscovite nanoparticle injections significantly alleviated partial sciatic nerve ligation-induced mechanical and cold *** the spinal cord,the muscovite nanoparticle injections exhibited inhibitory effects on astrocyte and microglia activation and reduced the expression of pro-inflammatory cytokines,such as interleukin-1β,tumor necrosis factor-α,interleiukin-6 and monocyte chemoattractant protein-1,which were upregulated in the partial sciatic nerve ligation ***,the muscovite nanoparticle injections resulted in a decrease in activating transcription factor 3,a neuronal injury marker,in the sciatic *** results suggest that the analgesic effects of muscovite nanoparticle on partial sciatic nerve ligation-induced neuropathic pain may result from inhibiting activation of astrocytes and microglia as well as pro-inflammatory *** propose that muscovite nanoparticle is a potential anti-nociceptive candidate for neuropathic *** experimental protocols in this study were approved by the Institutional Animal Ethics Committee(IACUC)at Dongguk University,South Korea(approval No.2017-022-1)

关键词： astrocyte microglia muscovite nanoparticle neuropathic pain partial sciatic nerve ligation pharmacopuncture pro-inflammatory cytokine spinal cord

Construction of random sheared fosmid library from Chinese cabbage and its use for Brassica rapa genome sequencing project

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Journal of Genetics and Genomics 2011年第1期38卷 47-53页

作者： Tae-Ho park Beom-Seok park Jin-A Kim joon Ki Hong Mina Jin Young-Joo Seol Jeong-Hwan Mun Genomics and Functional Bio-Material Division National Academy of Agricultural ScienceRural Development Administration The Department of Horticultural Science Daegu University

As a part of the Multinational Genome Sequencing Project of Brassica rapa, linkage group R9 and R3 were sequenced using a bacterial artificial chromosome （BAC） by BAC strategy. The current physical contigs are expected to cover approximately 90% euchromatins of both chromosomes. As the project progresses, BAC selection for sequence extension becomes more limited because BAC libraries are restriction enzyme-specific. To support the project, a random sheared fosmid library was constructed. The library consists of 97536 clones with average insert size of approximately 40 kb corresponding to seven genome equivalents, assuming a Chinese cabbage genome size of 550 Mb. The library was screened with primers designed at the end of sequences of nine points of scaffold gaps where BAC clones cannot be selected to extend the physical contigs. The selected positive clones were end-sequenced to check the overlap between the fosmid clones and the adjacent BAC clones. Nine fosmid clones were selected and fully sequenced. The sequences revealed two completed gap filling and seven sequence extensions, which can be used for further selection of BAC clones confirming that the fosmid library will facilitate the sequence completion of B. rapa.

关键词： Brassica rapa Chinese cabbage Fosmid library Genome sequencing Physical contig