• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.298-300
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• 2023

국제수로기구는 해양정보 교환을 위한 제품표준 개발 지원을 위해 S-100 개발하고 현재 그 버전으로 5판으로 개정 하였다. 항로표지 정보는 항행경보와 항로표지 상태정보로 제공되는데, 국제수로기구는 해사안전정보(MSI)의 디지털 데이터 제작 및 교환 위해 S-124 개발되었고, 국제항로표협회는 S-201 항로표지 정보표준 개발을 완료하고, S-125 항로표지 상태정보 표준개발 진행 중이다. IALA/IHO는 S-100/S-200 개발 공동워크숍을 개최하고, S-125 항로표지 정보서비스에 대한 시연 및 워크숍 필요성 강조하였다. 본 연구는 항로표지 정보 서비스를 싱가포르 MPA와 협력하여 시험 시나리오 및 검증 계획을 수립하였다. S-124, S-125 기반의 정보 제공 서비스 및 선박 내비게이션을 통한 검증을 진행할 계획이며, 검증 결과는 IALA, IHO 회의로 보고할 계획이다. 항로표지 정보서비스 시험 결과는 관련 국제표준 개발에 기여하고, 항해환경에 해당 서비스 정착하는데 도움이 될 것으로 판단된다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.2 no.1
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• pp.160-175
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• 1991

The purpose of this study is to investigate the parental marital relationships and the parent-child relationships of child psychiatric parents and its control group. This study was carried out two questionnaire instruments ; The marital satisfaction inventory(MSI) and the dyadic adjustment scale(DAS). The subjects are parents of the child psychiatric patients. A matched control group and parents of child psychiatric parents in Seoul area which were collected from July 1987 to September 1987, and classified into five subgroups : 1 Psychiatric disorder 2) Neurotic disorder 3) Tic disorder 4) Autistic disorder 5) Mental retardation. The results are as following ; 1) M.S.I scale scores of parents of patients group are lower than that of control group. 2) D.A.S scale score of parents of patients group is significantly lower than that of the control group(P<0.01). 3) The global distress scale(GDS) of the M.S.I. was most positively correlated with affective communication(AFC) and problem-sloving communication(PSC). 4) Female shoed more modern concept of role identification than male but tend to have heavier role assignment especially in child rearing practices which could be characterized by maternal domination. 5) Affective communication and sexual relationship between married couple and child rearing practices are influenced by their own family history of distress. 6) The marital global distress scale(GDS) score was highest in the parents of psychosis, the next in the parents of neurosis, autism, mental retardation, and tic disorder in descending order of severity. 7) The dyadic maladjustment score was highest in the parents of psychosis, the next in the parents of neurosis, tic, autism and mental retardation in descending order of severity. 8) Conflict in child rearing and parenting problems were particularly prominent in parents of the tic patients, and their marital relationship was not significantly disturbed. The above finding suggested that couple adjustment and marital dissatisfaction were closely related with child rearing problems and the children's disorder. So marital dissatisfaction and marital maladjustment seem to play a significant role in the genesis of psychosis and neurosis not much in autism and mental retardation.

• Journal of the Korean Association of Geographic Information Studies
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• v.8 no.2
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• pp.145-156
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• 2005

An artificial disturbance like forest fragmentation has affected the sustainability of forest ecosystem. Therefore, in order to manage the forest ecosystem efficiently needed to analyze quantity and quality (structural pattern) of forest simultaneously. This study analyzed the structural patterns of forest landscape to provide a basic data for evaluation and management of forest ecosystem in Nakdong River Basin during 10 years from 1980s to 1990s using landscape indices and GIS methods. Forest distribution maps and 6 landscape indices(LPI, PD, ED, MSI, CPLAND, IJI) for the analysis were reconstructed from land-cover maps constructed by Ministry of Environment and pearson correlation analysis. According to the structural analysis of forest landscape using landscape indices, the forest fragmentation of watersheds along the main stream of the Nakdong river was more severe than any other watersheds. Futhermore, the Nakong-sangju and Nakdong-miryang watersheds had unstable forest structures as well as least amount of forest quantity. Thus, these watersheds need significant amount of forest through a new forest management policy considering local environmental conditions. The connectivity between forests in local regions should be considered as well.

• International Commerce and Information Review
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• v.19 no.4
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• pp.127-145
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• 2017

The study focuses on the ICT industry, which is considered future growth engine. Tthe main objective of the research is to examine the extent of the competitiveness of the Chinese ICT industry, which is rapidly emerging as a competitor of the ICT industry in Korea. The ICT items subject to primary analysis of this study were computer and peripherals items. Analysis methods used were MSI (Market Share Index), EBI (Export Bias Index), and MCA (Market Comparative Advantage). The analysis period was from 2008 to 2016, and the analysis dater used were the export-import data provided by KITA. According to the study, Korean market share of Chinese computers and peripherals items has continued to increase, exports concentrated on the Korean market are intensifying, though the degree of competitiveness gained by the Korean market is quite strong. In particular, 852851, 847160 items have the largest competitiveness in the Korean market compared to other items used in this study. The implications of this study for the Korean market are as follows: i) improvement of quality with price ii) convergence product development between computer and peripherals items and consumer -friendly design development, and iii) marketing efforts to improve product awareness so that consumers recognize Korean computer and peripherals products.

• Spatial Information Research
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• v.22 no.5
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• pp.19-26
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• 2014

International attention on the Northern Sea Route has been increased as the decreased sea-ice extents in Northern Sea raise the possibility to develop new sea routes and natural resources. However, to protect ships' safety and pristine environments in polar waters, International Maritime Organization(IMO) has been developing the Polar Code to regulate polar shipping. The marine navigation supporting system is essential for ships traveling long distance in the Northern Sea as they are affected by ocean weather and sea-ice. Therefore, to cope with the IMO Polar Code, this research proposes the functional requirements to develop the marine navigation supporting system for the Northern Sea Route. The functional requirements derived from the IMO Polar code consist of arctic voyage risk map, arctic voyage planning and MSI(Marine Safety Information) methods, based on which the navigation supporting system is able to provide dynamic and safe-economical sea route service using the sea-ice observation and prediction technologies. Also, a requirement of the system application is derived to apply the marine navigation supporting system for authorizing ships operating in the Northern Sea. To reflect the proposed system in the Polar Code, continual international exchange and policy proposals are necessary along with the development of sea-ice observation and prediction technologies.

• Journal of Korea Water Resources Association
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• v.56 no.3
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• pp.211-224
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• 2023

In this study, a soil moisture estimation was performed using the Water Cloud Model (WCM), a backscatter model that considers vegetation based on SAR (Synthetic Aperture Radar). Sentinel-1 SAR and Sentinel-2 MSI (Multi-Spectral Instrument) images of a 40 × 50 km² area including the Yongdam Dam watershed of the Geum River were collected for this study. As vegetation descriptor of WCM, Sentinel-1 based vegetation index RVI (Radar Vegetation Index), depolarization ratio (DR), and Sentinel-2 based NDVI (Normalized Difference Vegetation Index) were used, respectively. Forward modeling of WCM was performed by 3 groups, which were divided by the characteristics between backscattering coefficient and soil moisture. The clearer the linear relationship between soil moisture and the backscattering coefficient, the higher the simulation performance. To estimate the soil moisture, the simulated backscattering coefficient was inverted. The simulation performance was proportional to the forward modeling result. The WCM simulation error showed an increasing pattern from about -12dB based on the observed backscattering coefficient.

• Korean Journal of Culture and Social Issue
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• v.19 no.4
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• pp.553-576
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• 2013

The purpose of this study was to investigate the impact of retirement stress, character strengths and marital dissatisfaction on depression. Additionally this study examined direct effects and indirect effects of character strengths and marital dissatisfaction. The participant group was composed of 197 retired men living in Daegu and Gyongsangbuk-do. The Retirement Stress Scale (RSS), Character Strengths Test (CST), Korean Marital Satisfaction Inventory (K-MSI), and Center for Epistemology Studies Depression scale (CES-D) were administered to participants. Structural Equation Modeling (SEM) with AMOS was used for the purpose of analysis. The results of the study were as follows. First, an increase in retirement stress was associated with higher levels of depression. Second, hierarchical regression analysis indicated that higher levels of optimism significantly predicted higher depression. Also hierarchical regression analysis indicated that lower levels of appreciation of beauty and excellence without optimism significantly predicted higher depression. Furthermore, increases in marital dissatisfaction were associated with higher levels of depression. Third, the constructed model including both direct effects and indirect effects appeared to fit better than alternative model in explaining relationships between retirement stress and depression. In other words, character strengths and marital dissatisfaction appeared to affect the depression levels of retired men directly and indirectly. To sum up, this study demonstrated that the factors which had an effect on depression in retired men, character strengths and harmonious marital relationships appeared to act as a buffer against depression in retired men. The current results might serve as basic data for psychological well-being programs for retired men. Finally, the limitations and implications of the current study were discussed.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.135-138
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• 2010

The goals of the Global Maritime Distress and Safety System (GMDSS) that initiated by the IMO and supported by IALA, IHO, ITU, IEC and manufacturers are to provide more effective and efficient emergency and safety communications and disseminate Maritime Safety Information (MSI) to all ships on the world's oceans regardless of location or atmospheric conditions. Much of the GMDSS is built on technologies more than 20 years old; some work well; others do not. While GMDSS requirements apply only to SOLAS vessels, there are many other vessels on the water. So some considerations are necessary for non-SOLAS vessels including fishing ships, leisure boats and small boats. This paper describes the analysis of IMO, ITU and IEC meeting results held on recently. Also it gives the trends of the international marine radio standards and its technologies.

• Electronics and Telecommunications Trends
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• v.3 no.2
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• pp.116-133
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• 1988

ASIC (Application Specific Integrated Circuit)은 직역하면 응용특정 IC, 혹은 특정용도 IC로서 LSI시장의 조사회사인 Dataquest사가 '84년경부터 사용하기 시작한 말이다. ASIC이 최근 크게 주목을 끌고있는 것은, 반도체 사용자가 자신의 제품에 개성을 불어넣기 위해서는 범용IC를 사용해온 것으로는 기술적 우위성이 확보되지 않는다고 판단했기 때문에 주문형 LSI를 강하게 추진해 왔다는 것과 반도체 메이커도 메모리IC를 중심으로 한 범용IC시장의 부진, 더우기 날로 더해가는 반도체 시장의 시장쟁탈 및 무역마찰로 인해 ASIC 시장에로의 참여가 강화되어 왔다는 점 등을 들수있다. 집적화 기술은 매년 진보하여 지금은 100만개 이상의 트랜지스터를 집적할 수 있게 되었다. 따라서 지금까지 SSI/MSI를 사용해서 회로설계한 기능단위의 칩을 프린터 기판위에 조합시켜 시스팀을 구축해 왔으나, 앞으로는 하나의 칩위에 시스팀을 구성하는 시대로 변하고 있다. ASIC은 그 요청에 따라서 one-chip화의 개념에 따라서 만들어진 것으로서, 시장환경에 대단히 유익한 디바이스로 생각할 수 있다. 시스팀의 one-chip화의 실현결과 압도적으로 소형화, 경량화, 성자원화가 달성됨과 동시에 신뢰성 및 동작성능도 우수하게 되었다. ASIC기술은 현재 주류로 되어있는 게이트 어레이를 볼때, 개발비용은 크게 감소하여 개발기간도 논리회로가 완성된다면 3~4주 정도로 단축시킬수 있다. ASIC 설계에는 각 공정에 있어서 고도의 컴퓨터 지원설계가 채용되고 제조공정에서는 첨단의 프로세서 기술 등이 이용되므로 ASIC기술은 종합적인 첨단기술의 집약이라고 불러도 좋을것이다. 이러한 기술추세에 맞추어 전자통신 동향분석지 제3권 제1호(1988.3.)에 발표된 최신 ASIC기술동향의 후속편으로 ASIC에 관련된 중요용어 50개를 선정, 알파벳 순으로 나열하여 설명하였다.

• Molecules and Cells
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• v.37 no.5
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• pp.357-364
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• 2014

Medulloblastoma, the most common malignant brain tumor in children, is a disease whose mechanisms are now beginning to be uncovered by high-throughput studies of somatic mutations, mRNA expression patterns, and epigenetic profiles of patient tumors. One emerging theme from studies that sequenced the tumor genomes of large cohorts of medulloblastoma patients is frequent mutation of RNA binding proteins. Proteins which bind multiple RNA targets can act as master regulators of gene expression at the post-transcriptional level to co-ordinate cellular processes and alter the phenotype of the cell. Identification of the target genes of RNA binding proteins may highlight essential pathways of medulloblastomagenesis that cannot be detected by study of transcriptomics alone. Furthermore, a subset of RNA binding proteins are attractive drug targets. For example, compounds that are under development as anti-viral targets due to their ability to inhibit RNA helicases could also be tested in novel approaches to medulloblastoma therapy by targeting key RNA binding proteins. In this review, we discuss a number of RNA binding proteins, including Musashi1 (MSI1), DEAD (Asp-Glu-Ala-Asp) box helicase 3 X-linked (DDX3X), DDX31, and cell division cycle and apoptosis regulator 1 (CCAR1), which play potentially critical roles in the growth and/or maintenance of medulloblastoma.