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Estimation of carbon storage based on individual tree detection in Pinus densiflora stands using a fusion of aerial photography and LiDAR data

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Science China(Life Sciences) 2010年第7期53卷 885-897页

作者： kim so-ra KWAK Doo-Ahn LEE Woo-Kyun soN Yowhan BAE Sang-Won kim Choonsig YOO Seongjin Division of Environmental Science and Ecological Engineering Korea University Forest Practice Research Center Korea Forest Research Institute Departement of Forest Resources Jinju National University

The objective of this study was to estimate the carbon storage capacity of Pinus densiflora stands using remotely sensed data by combining digital aerial photography with light detection and ranging(LiDAR) data.A digital canopy model(DCM),generated from the LiDAR data,was combined with aerial photography for segmenting crowns of individual *** eliminate errors in over and under-segmentation,the combined image was smoothed using a Gaussian filtering *** processed image was then segmented into individual trees using a marker-controlled watershed segmentation *** measuring the crown area from the segmented individual trees,the individual tree diameter at breast height(DBH) was estimated using a regression function developed from the relationship observed between the field-measured DBH and crown *** above ground biomass of individual trees could be calculated by an image-derived DBH using a regression function developed by the Korea Forest Research *** carbon storage,based on individual trees,was estimated by simple multiplication using the carbon conversion index(0.5),as suggested in guidelines from the Intergovernmental Panel on Climate *** mean carbon storage per individual tree was estimated and then compared with the field-measured *** study suggested that the biomass and carbon storage in a large forest area can be effectively estimated using aerial photographs and LiDAR data.

关键词： LiDAR aerial photograph region growing marker-control watershed segmentation carbon storage

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韩国幼儿汉语教学情况调查与分析

韩国幼儿汉语教学情况调查与分析

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作者：金素摞(kim so ra) 哈尔滨师范大学

学位级别：硕士

随着“汉语热”的不断升温以及对外汉语在世界各地的大力推广,海外汉语教学对象出现了低龄化倾向,幼儿汉语教学受到了越来越多的关注与重视,海外幼儿汉语教学的相关研究取得了一定的研究成果。但是韩国幼儿(3-6周岁)汉语教学的发展才刚... 详细信息

随着“汉语热”的不断升温以及对外汉语在世界各地的大力推广,海外汉语教学对象出现了低龄化倾向,幼儿汉语教学受到了越来越多的关注与重视,海外幼儿汉语教学的相关研究取得了一定的研究成果。但是韩国幼儿(3-6周岁)汉语教学的发展才刚刚起步,十分值得关注。但纵观已有文献,大部分都是针对韩国青少年或成人的汉语教学方法和教学技巧的研究。相比较而言,研究如何进行韩国幼儿汉语教学的成果寥寥无几,可供参考的文献不多,专门针对韩国幼儿汉语教学的教学方法与课程设计的研究也并不多见。本文以韩国幼儿汉语教学为研究对象,通过调查问卷对韩国幼儿语言学习特点、第二语言学习特点、汉语教学现状、汉语教学方法等方面进行系统而深入的调查研究,从中发现韩国幼儿汉语教学存在的问题,进而分析其产生的原因,并在此基础上对韩国幼儿汉语教学提出一些建设性的解决途径。本论文共分三个部分。第一部分是绪论。介绍了韩国幼儿汉语教学在当今韩国对外汉语教学中的重要性,指出了现阶段韩国幼儿汉语教学存在诸多问题,在此基础上提出了本研究的目的和意义。并给出相关研究文献综述,分别从海外幼儿汉语教学原则、师资、教学方法、教材以及韩国幼儿汉语教学这五个方面进行综述。第二部分是正文,包括四个章节。第一章是从幼儿的语言及第二语言学习特点的角度进行阐述,结合韩国幼儿自身特点,重点分析了其第二语言习得特点。第二章是与本论文调查分析相关的韩国幼儿汉语教学现状调查设计。第三章是基于第二章调查而做出的总结与分析。第四章阐述了在调查、分析过程中发现的韩国幼儿汉语教学面临的问题及原因,对主要发现进行总结,并对未来韩国幼儿汉语教学提出了一些可供选取与使用的教学策略。第三部分是本文的结语,对本调查分析进行总结,并对本论文的不足及局限进行了说明。

关键词：韩国幼儿语言学习特点对外汉语教学调查

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Prominent cycling reversibility and kinetics enabled by CaTiO3 protective layer on Zn metal for aqueous Zn-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 245-258页

作者： Gaeun Lee Yong Nam Ahn Seongjoon so Chanwoo Park Jong-Seong Bae Taehyun Park Il Tae kim Jaehyun Hur School of Chemical Biological and Battery Engineering Gachon University Seongnam Busan Center Korea Basic Science Institute

Aqueous Zn-ion batteries （AZIBs） have received considerable attention owing to their various advantages such as safety,low cost,simple battery assembly conditions,and high ionic ***,they still suffer from serious problems,including uncontrollable dendrite growth,corrosion,hydrogen evolution reaction （HER） from water decomposition,electrode passivation,and unexpected *** creation of a uniform artificial nanocrystal layer on the Zn anode surface is a promising strategy for resolving these ***,we propose the use of a perovskite CaTiO3（CTO） protective layer on Zn（CTO@Zn） as a promising approach for improving the performance of *** CTO artificial layer provides an efficient pathway for Zn ion diffusion towards the Zn metal because of the high dielectric constant （εr=180） and ferroelectric characteristics that enable the alignment of dipole moments and redistribute the Zn2+ions in the CTO *** avoiding the direct contact of the Zn anode with the electrolyte solution,the uneven dendrite growth,corrosion,parasitic side reactions,and HER are mitigated,while CTO retains its mechanical and chemical robustness during ***,CTO@Zn demonstrates an improved lifespan in a symmetric cell configuration compared with bare ***@Zn shows steady overpotential （～68 m V） for 1500 h at 1 mA cm-2/0.5 mA h cm-2,excelling bare ***,when paired with the V2O5-C cathode,the CTO@Zn//V2O5-C full battery delivers 148.4 mA h g-1（based on the mass of the cathode） after 300 *** study provides new insights into Zn metal anodes and the development of high-performance AZIBs.

关键词： Artificial layer Dielectric constant Zn metal anode Zinc aqueous battery

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利用航空影像和雷达数据估算韩国单株个体赤松林的碳储量

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中国科学：生命科学 2010年第7期40卷 677-677页

作者： kim so-ra KWAK Doo-Ahn LEE Woo-Kyun soN Yowhan BAE Sang-Won kim Choonsig YOO Seongjin Division of Environmental Science and Ecological Engineering Korea University Seoul 136-701 Korea Forest Practice Research Center Korea Forest Research Institute Kyeonggi-Do 487-821 Korea Departement of Forest Resources Jinju National University Jinju 660-758 Korea

利用航空影像和激光雷达数据,对韩国赤松林的碳储量进行了估算.基于雷达数据建立数字冠层模型,再与航空影像融合,进而划分单株树木的冠幅范围.为消除分段误差,采用高斯滤波方法对融合后的影像进行平滑,然后利用标记控制阈值分割方法提... 详细信息

利用航空影像和激光雷达数据,对韩国赤松林的碳储量进行了估算.基于雷达数据建立数字冠层模型,再与航空影像融合,进而划分单株树木的冠幅范围.为消除分段误差,采用高斯滤波方法对融合后的影像进行平滑,然后利用标记控制阈值分割方法提取出单株树木的冠幅范围,再通过建立实测冠幅面积和胸径间的回归方程计算出单株树木的胸径.在此基础上,利用韩国森林研究所建立的回归模型,计算单株树木的地上生物量.单株树木的碳储量由地上生物量乘以转化系数(0.5)得到.结果显示,用此方法估算的平均单株树木碳储量为193.7kgC,与实际测量值223.8kgC较为接近,说明本研究提供的基于航空影像和雷达的方法,可以有效地估算大面积森林树木的生物量和碳储量.

关键词：激光雷达航空影像区域生长量标记控制阈值分割法碳储量

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Erratum to:Estimation of carbon storage based on individual tree detection in Pinus densiflora stands using a fusion of aerial photography and LiDAR data

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Science China(Life Sciences) 2010年第9期53卷 1162-1162页

In the online version of the article the name of the third author is *** correct name is LEE Woo-Kyun.

关键词： Erratum to

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Role of glutathione transferase in phase separation of FUS and TAF15 in neurons

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Neural Regeneration Research 2025年第7期20卷 1999-2000页

作者： Kiyoung kim Department of Medical Science Soonchunhyang UniversityAsanKorea

Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disorder characterized by the degeneration of motor neurons in the brain and spinal cord,leading to muscle weakness,paralysis,and ultimately death(Cleveland and Rothstein,2001).Frontotemporal lobar degeneration(FTLD)is a neurodegenerative disease affecting the frontal and temporal lobes of the brain,leading to changes in behavior,personality,and language(Van Langenhove et al.,2012).Both ALS and FTLD are classified as proteinopathies in which abnormal protein aggregation and accumulation in neurons contribute to the disease *** in sarcoma(FUS)is a DNA/RNA-binding protein involved in various cellular processes,including transcriptional regulation,RNA splicing,and DNA *** in the FUS gene have been linked to familial ALS,highlighting the importance of FUS in the disease pathogenesis(Vance et al.,2009).In ALS and FTLD,aberrant post-translational modifications(PTMs)of FUS,such as phosphorylation,acetylation,and methylation,have been implicated in the promotion of FUS aggregation and neurotoxicity(Choi et al.,2023).Therefore,understanding the regulatory mechanisms of FUS PTMs is crucial for developing targeted therapies against these diseases.

关键词： degeneration FUS aggregation

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Carboplatin restores neuronal toxicity in FUS-linked amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第8期20卷 2319-2320页

作者： Kiyoung kim Department of Medical Science Soonchunhyang UniversityAsanKorea

Amyotrophic lateral sclerosis(ALS),also known as Lou Geh rig's disease,is a progressive neurodegenerative disorder that affects motor neurons in the brain and spinal *** leads to muscle weakness,paralysis,and ultimate... 详细信息

关键词： paralysis sclerosis respiratory

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Oxygen permeability of soft contact lenses in different pH, osmolality and buffering solution

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International Journal of Ophthalmology(English edition) 2015年第5期8卷 1037-1042页

作者： Se Eun Lee so ra kim Mijung Park Department of Optometry Seoul National University of Science and Technology

AIMTo determine the effect of pH, osmolality, and buffering system on the oxygen permeability (Dk) of soft contact *** hydrogel lenses (nelfilcon A and etafilcon A) and 2 silicone hydrogel lenses (lotrafilcon A and balafilcon A) were used in the study. These lenses were incubated in phosphate-buffered saline (PBS) and borate-buffered saline (BBS) solutions adjusted by 0.8 pH increments to a pH in the range of 5.8-9.0 or in hypotonic (280 mOsmol/kg), isotonic (310 mOsmol/kg) and hypertonic (380 mOsmol/kg) PBS solutions. Polarographic method was used for measuring the Dk and lenses were stacked as 4 layers to correct the boundary *** values of all contact lenses measured in BBS solutions were more stable than those in PBS solutions. Especially the etafilcon A lens showed a relative big change compared with other types of contact lenses at the same conditions. When the osmolality of PBS solution increased from hypotonic to hypertonic, Dk of all contact lenses decreased. Variations in Dk existed depending on lens materials, etafilcon A lens was the most affected and nelfilcon A was the least affected by *** the result obtained, it is revealed that Dk of contact lenses is changed by the pH, osmolality, and buffering condition of tear. Thus, Dk of contact lens can be varied by the lens wearers' physiological and/or pathological conditions.

关键词： soft contact lens oxygen permeability buffer solutions osmolality pH

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Recovery of the injured neural system through gene delivery to surviving neurons in Parkinson’s disease

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Neural Regeneration Research 2025年第10期20卷 2855-2861页

作者： Chanchal Sharma Sehwan kim Hyemi Eo Sang Ryong kim School of Life Science Kyungpook National UniversityDaeguKorea BK21 FOUR KNU Creative BioResearch Group Kyungpook National University DaeguKorea Brain Science and Engineering Institute Kyungpook National UniversityDaeguKorea

A critical unaddressed problem in Parkinson’s disease is the lack of therapy that slows or hampers *** medications effectively manage symptoms,they offer no long-term benefit because they fail to address the underlying neuronal *** highlights that the elusive goals of halting progression and restoring damaged neurons limit the long-term impact of current *** clinical trials using gene therapy have demonstrated the safety of various vector delivery systems,dosages,and transgenes expressed in the central nervous system,signifying tangible and substantial progress in applying gene therapy as a promising Parkinson’s disease ***,at diagnosis,many dopamine neurons remain in the substantia nigra,offering a potential window for recovery and *** propose that modulating these surviving dopamine neurons and axons in the substantia nigra and striatum using gene therapy offers a potentially more impactful therapeutic approach for future ***,innovative gene therapies that focus on preserving the remaining elements may have significant potential for enhancing long-term outcomes and the quality of life for patients with Parkinson’s *** this review,we provide a perspective on how gene therapy can protect vulnerable elements in the substantia nigra and striatum,offering a novel approach to addressing Parkinson’s disease at its core.

关键词： adeno-associated virus gene therapy neuroprotection neurorestoration neurotrophic factor nigrostriatal dopamine pathway pro-survival protein

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Sensitivity of Snowfall Characteristics to Meteorological Conditions in the Yeongdong Region of Korea

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Advances in Atmospheric Sciences 2021年第3期38卷 413-429页

作者： Yoo-Jun kim so-ra IN Hae-Min kim Jin-Hwa LEE Kyu rang kim Seungbum kim Byung-Gon kim High Impact Weather Research Department National Institute of Meteorological SciencesGangneung 25457Korea Operational Systems Development Department National Institute of Meteorological SciencesSeogwipo 63568Korea Department of Atmospheric Environmental Sciences Gangneung-Wonju National UniversityGangneung 25457Korea

This study investigates the characteristics of cold clouds and snowfall in both the Yeongdong coastal and mountainous regions under different meteorological conditions based on the integration of numerical modeling and three-hourly rawinsonde observations with snow crystal photographs for a snowfall event that occurred on 29−30 January *** found that rimed particles predominantly observed turned into dendrite particles in the latter period of the episode when the 850 hPa temperature decreased at the coastal site,whereas the snow crystal habits at the mountainous site were largely needle or rimed *** soundings showed a well-defined,two-layered cloud structure along with distinctive wind-directional shear,and an inversion in the equivalent potential temperature above the low-level cloud *** first experiment with a decrease in lower-layer temperature showed that the low-level cloud thickness was reduced to less than 1.5 km,and the accumulated precipitation was decreased by 87%compared with the control *** difference in precipitation amount between the single-layered experiment and control experiment(two-layered)was not so significant to attribute it to the effect of the seeder−feeder *** precipitation in the last experiment by weakening winddirectional shear was increased by 1.4 times greater than the control experiment specifically at the coastal site,with graupel particles accounting for the highest proportion(~62%).The current results would improve snowfall forecasts in complicated geographical environments such as Yeongdong in terms of snow crystal habit as well as snowfall amount in both time and space domains.

关键词： Yeongdong snow crystal rawinsonde cloud-resolving model

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