• Journal of Korean Library and Information Science Society
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• v.27
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• pp.137-169
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• 1997

The Annual Editions of SCI(Science Citation Index) CD-ROM over the last five years ('92-'96) were studied to investigate: 1) the status of domestic research activity in science & technology, in comparison with other countries, 2) research activity by universities and research institutes in Korea. Because the selection of journals in SCI is based on the criteria of citation sources, the journals registered in SCI are recognized as the Core Journals in each area of research. Therefore, the analysis result of SCI data is a quite reliable measurement to evaluate the research activities in science and technology. In 1996 a total of 6, 227 papers were listed on SCI, ranking the 21st up from the 29th in 1992. Over the last five years, the number had grown rapidly at an average of 29% per annum. This fast growth is expected to continue in the future.

• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.638-641
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• 2004

Returned laser pulse has certain relationship with vegetation canopy structure (canopy closure, height, LAI, biomass). This study attempts to analyze the characteristics of airborne laser scanner data over very dense forest canopy. Discrete pulse laser scanner data were obtained on April 25, 2004 along with digital aerial color imagery. Using forest stand maps, 14 sample stands of 7 species groups were selected and the elevations from the first and last laser return were compared. From the preliminary analysis, we found that the difference between the first and last return was higher with deciduous forest stand than in coniferous stand. Although difference between the first and the last laser returns often corresponds to tree height, it would not be the case for the forest site having very dense canopy structure.

• Animal Systematics, Evolution and Diversity
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• v.33 no.1
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• pp.56-59
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• 2017

The external anatomy of the immature stages (last instar larva and pupa) of the crane fly, Tipula (Nippotipula) sinica Alexander, 1935 (Diptera: Tipulidae) is described and illustrated from specimens first collected in Korean peninsula (South Korea). Comments concerning natural history and microhabitats of larvae are provided. This is the first detailed description with illustrations for the last instar larva and pupa of Tipula (Nippotipula) sinica. Pupal characteristics resemble those of most species from advanced lineages within the subfamily Tipulinae. And, also it described with habitats and biological notes of Tipula (Nippotipula) sinica. Crane fly larvae, categorization as found in this survey indicate a taxonomic stream and are expected to help.

• Research in Community and Public Health Nursing
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• v.28 no.1
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• pp.1-12
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• 2017

Purpose: The purpose of this study is to examine factors affecting quality of life among grandparents raising their grandchildren. Methods: This study carried out a secondary analysis of data from the 2014 Korean Longitudinal Study of Aging (KLoSA) and Statistics Korea. Data collected from 224 grandparents who reported raising their grandchildren were analyzed using descriptive statistics, independent t-test, ANOVA, pearson correlation coefficient, and multilevel regression analysis. Results: The mean score of the participants' quality of life was 62.63. Significant predictors of quality of life of the grandparents included subjective health status, last year's total house income, number of last year's travels, frequency of last year's movie seeing, and number of children's parks per 100,000 population. Conclusion: These results suggest that public health nurses in improving quality of life of grandparents focus on children's parks and formal social supports as community factors as well as regular exercise as an individual factor in order to be more effective.

• Journal of the Korean Society of Industry Convergence
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• v.17 no.3
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• pp.145-150
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• 2014

The purpose of this study was to evaluate the growth of lettuce last for 36 days. Lettuce planted on the same medium with different treatment. The first treatment watering using bio-fertilizer (farmer) and second watering using effective microorganism. Lettuce grown in greenhouse with temperature $18-32^{\circ}C$.Characteristic observed that growth in height and weight of the plants. From the observations that can be generated at high observation, treatment 1 had a higher than treatment 2. On the last day treatment plant with treatment 1 had a 99.8 mm high while treatment 2 has height of 90.7 mm. Observation on severe treatment 1 has a heavier weight than treatment 2. Plants with treatment 1 have a weight on the last day of 0.15665 grams while in plants with treatment 2 weights are 0.11365 grams.

• Proceedings of the KSR Conference
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• 2004.10a
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• pp.246-249
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• 2004

According to ' Monthly report of train accidents and incidents ' of KNR, 95 numbers of rolling stock fire accidents/incidents had happened during last five years(from 1999 to 2003). Among them, there have happened only one injured accident which happened at Whamyung station in 1999. But it is necessary to consider a countermeasure for fire accidents/incidents, because they have big risk which might produce a large scale damage and lots of injured persons as the Taegu subway fire accident last year. This paper analyzes the rolling stock fire accidents/incidents which have happened during last five years in KNR, and suggests their countermeasures.

• Electronics and Telecommunications Trends
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• v.17 no.6 s.78
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• pp.39-47
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• 2002

지금까지 last-mile 구간의 병목 현상을 해결하기 위해 다양한 매체와 기술들이 선보였으나, 어떠한 솔루션도 통신 사업자들의 요구 조건을 완벽하게 충족시키지 못하고 있다. 광 섬유가 가장 이상적인 대안으로 평가 받고 있지만 여전히 높은 가격과 긴 구축 시간으로 인해 주로 메트로 코어에 집중적으로 설치되어 있는 상태이며, 액세스 및 에지 구간까지 확대되려면 앞으로 상당한 시간이 소요될 것으로 예상되고 있다. 따라서 FTTx 환경이 마련되기 전까지 한시적인 대안으로서 현재까지 LMDS/MMDS와 같은 RF 솔루션, xDSL 및 케이블 모뎀과 같은 동선 기반 광대역 액세스 솔루션들이 제안되었으나, 이들 기술들도 적절한 가격에 충분한 대역폭을 제공해야 하는 last-mile의 요구 조건을 만족시키지는 못하고 있다. 이에 본 고에서는 최근 또 다른 기업용 last-mile 솔루션으로 새롭게 부각되고 있는 자유 공간 광 통신(FSO)의 성장 가능성과 발전 전망을 탐색해 보고자 한다.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2001.04b
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• pp.51-56
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• 2001

This study was carried out to research the effect of nutrient composition and GA4＋7 on growth, flower quality and bulb development in special hydroponics of cut tulip. Flowering of 'Cassini' was markedly accelerated by standard+GA4＋7, K200＋GA4＋7, N250＋GA4＋7 treatment, last internode was increased by N250 as compared with other treatment. For 'Christmas Marvel', flowering was promoted by K250＋GA4＋7, last infernode and total length were also increased with K250＋GA4＋7 as compared to other treatment. For 'Golden Apeldoorn', flowering was accelerated by K200＋GA4＋7, last internode was increased with N300＋GA4＋7 treatment and total length was increased in N250＋GA4＋7 treatment as compared with the standard plants. Bulb weight and number of 'Cassini', 'Christmas Marvel'and 'Golden Apeldoorn' were decreased by GA4＋7 as compared to non-treatment, and bulb diameter was not affected by GA4＋7.

• Transactions of the Korean Society of Automotive Engineers
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• v.13 no.4
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• pp.160-166
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• 2005

In recent, recreational vehicles, which efficiently provide wide inner space for various utilities, are highly preferred in automobile market. Though those vehicles enable to load much luggage in space behind the last seat, in case of frontal impact with high velocity the luggage strongly collides into the seat back and the passengers in. the last seat could be severely injured. Therefore, high strength against luggage intrusion is required for the last seat, and it is regulated by law of ECE R17. In this study, for a recreational vehicle under developing, an analysis technique for simulating seat crash in accordance with luggage intrusion test of ECE R17 was investigated. The results exhibited good correlation with the test ones.

• International Journal of High-Rise Buildings
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• v.12 no.1
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• pp.1-9
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• 2023

The last 30 years have seen a rapid growth in the number of supertall buildings across the world, with newly completed buildings continuing to rank among the tallest 100 every year. Chinese projects notably play a pivotal role in these constant updates. It is caused by the interweaving of population and urbanization, economic considerations, and further, a series of accompanying urban problems. This paper focuses on the world's 100 tallest buildings in the last 30 years, and compares this collection of projects across five years via the dimensions of height, distribution, function and structural material. The intention is to discuss and interpret the influence factors and developing trends, some of which have been apparent over a dozen years, while others are just beginning to take shape, thus to provide an opportunity to preview the types of supertall buildings in the future.