[V. 회원 칼럼] 김성렬 펜싱칼럼(6월호에 이어 연속 칼럼)

김성렬 한국코칭능력개발원 2022 Coach Vol.27 No.3

[V. 회원 칼럼] 김성렬 펜싱칼럼

김성렬 한국코칭능력개발원 2022 Coach Vol.27 No.2

[Ⅳ. 회원 칼럼] 김성렬 펜싱칼럼

김성렬 한국코칭능력개발원 2022 Coach Vol.27 No.1

Side Scan Sonar 탐사자료의 영상처리와 해저면 Backscattering 음향특성

김성렬,유홍룡 한국해양학회 1987 韓國海洋學會誌 Vol.22 No.3

The digital data were obtained using Kennedy 9000 magnetic tape deck which was connected to the SMS960 side scan sonar during the field operations. The data of three consecutive survey tracks near Seongsan-po, Cheju were used for the development of this study. The softwares were mainly written in Fortran-77 using VAX 11/780 MINI-COMPUTER (CPU Memory; 4MB). The established mapping system consists of the pretreatment and the digital processing of seafloor image data. The pretreatment was necessary because the raw digital data format of the field magnetic tapes was not compatible to the VAX system. Therefore the raw data were read by the personal computer using the Assembler language and the data format was converted to IBM compatible, and next data were communicated to the VAX system. The digital processing includes geometrical correction for slant range, statistical analysis and cartography of the seafloor image. The sound speed in the water column was assumed 1,500 m/sec for the slant range correction and the moving average method was used for the signal trace smoothing. Histograms and cumulative curves were established for the statistical analysis, that was purposed to classify the backscattering strength from the sea-bottom. The seafloor image was displayed on the color screen of the TEKTRONIX 4113B terminal. According to the brief interpretation of the result image map, rocky and sedimentary bottoms were very well discriminated. Also it was shown that the backscattered acoustic pressurecorrelateswith the grain size and sorting of surface sediments.

PHC 말뚝의 하중전이실험을 통한 참 지지력의 산정

김성렬,정성교 東亞大學校 建設技術硏究所 2007 硏究論文集 Vol.31 No.1

Although a number of static pile load tests have been performed in this country, re-consideration on the interpretation and loading methods is needed, because of their less usefulness in practice. For this study, a static loading testing was performed for a long instrumented PHC pile, which was installed in asnd layer overlying thick soft clay. The shaft resistance of the pile had been monitored for a long time after installation, and then the static load testing was performed by the quick load test, unlike the recent Korean practice. Using the measured data, the elastic modulus of pile, residual stress and true resistance on the pile were determined. In the event, it was found that the residual stress on the pile, which remained prior to the static loading, significantly affects the shaft and toe resistances. Also, it was realized that the setup effect for the long pile is significant.

Complete mitochondrial genome of the wild silkmoth, Saturnia boisduvalii (Lepidoptera: Saturniidae)

김성렬,김종석,김기영,김민지,정준성,김익수 한국곤충학회 2017 Entomological Research Vol.47 No.6

We sequenced mitochondrial genome (mitogenome) of the wild silkmoth, Saturnia boisduvalii (Lepidoptera: Saturniidae), which occurs in mainland Korea, and compared it with other species in Bombycoidea to characterize the genomic evolution of the superfamily. We found that the composition and arrangement of genes in the 15,257‐bp S. boisduvalii genome are typical of the majority of Lepidoptera, and the genome is biased toward A/T nucleotides, as previously reported. Comparison of individual gene divergence among bombycoid species showed that ND6 was most variable (p‐distance = 0.21), whereas COI and COII were most conserved, indicating that of all the protein‐coding genes (PCGs) ND6 appear to have evolved most rapidly. Thus, other PCGs beside COI are potential alternative markers, where scrutinized discrimination among species is required.

신경생리학적 이론에 근거한 운동재활

김성렬 한국운동재활학회 2018 한국운동재활학회 학술대회 Vol.2018 No.04

Expression analysis of decapentaplegic gene in the silkworm, Bombyx mori

김성렬,최광호,김기영,구태원,김익수,박승원 한국곤충학회 2016 Entomological Research Vol.46 No.6

The decapentaplegic (dpp) gene in Drosophila is involved in multiple developmental processes, and is a highly conserved among various eukaryotic species, including Bombyx mori. Although the gene has well been characterized in Drosophila species the B. mori dpp has not yet been functionally analyzed. In this study, we analyzed the expression pattern of B. mori dpp in 12 different developmental days/stages (7 days for fifth instar larvae, 2 days for spinning stage, 2 days for pupal stages, and 1 day for adults) in both male and female silkworms using quantitative real‐time RT‐PCR (qRT‐PCR). mRNA expression of B. mori dpp was much higher in the female larvae up to the mid‐stage of the fifth instar compared with the corresponding male larvae. Similarly, dpp expression also was much higher in females during the eclosion period than that in the corresponding male pupae. During the embryonic stage, the expression level of the dpp gene was much higher compared to that of adult stage in both male and female silkworms. These results suggest that the B. mori dpp gene plays multiple roles in the developmental of B. mori.

Antibacterial effects of two cecropin type peptides isolated from the silkworm against Salmonella species

김성렬,박종우,김성완,김수배,조유영,김기영,최광호,지상덕,김종길,권해용 한국잠사학회 2018 International Journal of Industrial Entomology Vol.37 No.2

In insect defense system, antimicrobial peptides (AMPs) are one of important biological molecules to survive in a variety of environments. Insect can synthesize AMPs to protect against invading pathogens in humoral immune response. Taking more advantage of biological antimicrobial molecules, we report antibacterial activity of two cecropin type peptides, cecropin and moricin, isolated from the silkworm against four salmonella species. In this work, we purified antimicrobial candidate peptides (AMCP) from the extracts of immune challenged silkworm larval hemolymph by two-step chromatographic purification procedure, cation exchange and gel permeation chromatography. The molecular weights of purified peptides were estimated to be about 4 ~ 5 kDa by Tricin SDS-PAGE analysis, and identified as silkworm cecropin and moricin by NCBI BLAST homology search with their N-terminal amino acid sequences. As antibacterial activity assay, the purified peptides showed stronger antibacterial activity against Salmonella pathogens with an MIC value of 1 ~ 4 μg/mL. Therefore two cecropin type peptides purified from the silkworm will be valuable potential materials for development of new natural antibiotics.

North Korea’s Foreign Policy Behaviors toward the United States: Constructive Entanglements in Historical Factors Since the 1970s

김성렬 서울대학교 국제학연구소 2023 Journal of International and Area Studies Vol.30 No.1

A commonplace assumption among scholars in the North Korean studies was that North Korea is “evil” or a country threatening the international community. Instead, this research argues that North Korea’s aggressive approaches with nuclear weapons to the United States were not originally intended in the 1970s. Unlike the conventional wisdom of U.S.-North Korea relations, this research analyzes the origin of North Korea’s rapprochement toward the United States, and it became the aggressive approach through constructive entanglements in historical factors in the Northeast Asia region. It demonstrates that the U.S.’s indifference to the acute security anxieties caused by exogenous factors associated with the end of the Cold War led to North Korea’s adoption of an asymmetrical deterrence posture in its foreign policy toward the United States. It also suggests that bilateral and multilateral dialogues are needed to resolve and normalize the relations between the United States and North Korea.