• Journal of the Korean Society for Marine Environment & Energy
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• v.1 no.1
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• pp.66-82
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• 1998

The hydrodynamic characteristics of oil skimmers are reviewed. The paper consists of (1) introduction of the general aspects of oil skimmers, including kinds, performance indices, current market situations, (2) the analysis of factors affecting oil- skimming, (3) the review of existing papers with a special focus on hydrodynamic problem and finally (4) conclusions and some suggestions. The purpose of this paper is to draw hydrodynamists' attentions on oil skimmer, more broadly on marine oil spill.

• Journal of Bio-Environment Control
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• v.9 no.4
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• pp.212-222
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• 2000

This study was performed to investigate the performance of heat recovery device attached to exhaust gas flue connected to combustion chamber of greenhouse heating system. The experimental heat recovery system is mainly consisted of LPG combustion chamber and two heat recovery units; unit-A is attached directly to the exhaust gas flue, and unit-B is connected with unit-A. Heat recovery performance was evaluated by estimating total energy amounts by using enthalpy difference between two measurement points together with mass flow rate of gas and/or air passing through each heat recovery unit depending on 5 different flow rates controlled by voltage meter. The results of this experimental study, such as heat exchange behavior of supply air tubes and exhaust air passages crossing the tubes, pressure drop between inlet and outlet, heat recovery performance of exchange unit, etc., will be used as fundamental data for designing optimum heat recovery device to be used for fuel saving purpose by reducing heat loss amounts mostly wasted outside of greenhouse through flue.

• Journal of the Korean Society for Library and Information Science
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• v.49 no.1
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• pp.423-441
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• 2015

The results of this study are as follows. Firstly, out of existing manuscripts of Baeggokjib, the one possessed by Sang-hyun Kim and the one possessed by Jonkyunggak, Sungkyunkwan University shows reading reaords. Secondly, as a result of the analyses of the differences between Doksoogi and Gomoonsamshibyookdoksoogi, in terms of 1) order of records 2) the difference in the number of old texts included in the mentioned reading records 3) the difference in the title of old text, 4) the difference in records of reading times, they were revised and rearranged to Doksoogi after the record of Gomoonsamshibyookdoksoogi. Thirdly, as a result of investigations and analyses of 36 types of old texts recorded in Dogsoogi, it was found out that 1) in terms of contents, he mainly read literary books 2) in terms of style of literary books, he read mainly prose, preface, epistle, idle stories, funeral orations, etc. 3) in terms of authors, he read the old texts of Han Yoo who was the literary person during Tang Dynasty 4) Deuk-shin Kim read tend to read mainly old texts instead of single books.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.561-571
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• 2013

This study was carried out to examine the impacts of lower body meridian hand therapy on changes in obese women's body composition and blood lipid. 30 obese women participated in the experiment carried out twice a week for 5 weeks on 15 subjects in lower body meridian hand therapy group and 15 lower-body bathing/lower body meridian hand therapy group. For changes in body composition, BMI, body fat and waist-hip ratio decreased in both groups, while for changes in blood lipid, TC, LDL-C and TG decreased while HDL-C increased by 0.98% in the former group while 1.12% in the latter group. Thus, the 5-week treatment of lower body meridian hand therapy was effective for improving body composition, decrease of blood lipid and of middle-aged obese women, so which can be recommended as lower body obesity management program in esthetics.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.2
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• pp.46-53
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• 1978

The parents and F$_1$ seeds from the all possible combinations of the diallel crosses among five upland varieties and a low-land variety were grown in green house in winter and also on paddy field in summer. The durations to heading of all F$_1$'s grown in green house at winter were shorter than those of their parents mean. The shorter duration to heading was due to dominace was partial. And the non-allelic gene interaction was not significant. But in case that the F$_1$'s and the parents were grown on paddy-field in summer. the durations to heading of F$_1$'s were various according to the cross combinations and the non-allelic gene interactions were significant.

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.227-233
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• 2019

The purpose of this study is to evaluate the quality of chest compression by conducting comparison research between mechanical chest compressor(LUCAS) and manuale cardiopulmonary resuscitation(CPR) in a out-of-hospital environment and suggest effective advanced cardiac life support using mechanical chest compressors. For this, a out-of-hospital cardiac arrest was simulated with a team of 3 ambulance workers, and manuale CPR and CPR using LUCAS were performed on site and during transport in an ambulance. The research results are as follows: the comparison of manuale CPR between on site and in an ambulance revealed that on-site manuale CPR showed significant differences in the average compression depth, compression rate, and relaxation rate. Second, the comparison between manuale CPR and LUCAS in an ambulance showed significant differences in the average compression depth, compression rate, the number of compression per minute.

• Korean Journal of Agricultural and Forest Meteorology
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• v.23 no.2
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• pp.108-121
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• 2021

Field studies at Suwon, Cheorwon, and Jinbu were carried out to determine the relationship between mean temperature from transplanting to heading (MT) and growth at heading stage of rice. P lant height (P H) and dry weight (DW) at heading stage were significantly correlated with MT, showing second degree polynomials. The optimal temperatures for PH and DW were 23.2 ℃ and 22.8 ℃, respectively. Little differences in rice growth among soils collected from the experimental sites and the temperature-response in a phytotron study supported that MT was the main determinant of the growth shown in the field study. Though number of days to heading increased as MT decreased, cumulative temperatures (CT) affected by sites and MT for given varieties were fairly constant. When applying specific CT for each of the varieties to the temperature in North Korea, (1) five regions (Kaesong, Haeju, Sariwon, Nampo, Pyongyang) were suitable for early to mid-maturing varieties and (2) 14 regions (Yongyon, Singye, Anju, Kusong, Sinuiju, Changjon, Wonsan, Hamhung, Pyonggang, Yangdok, Huichon, Supung, Sinpo, Kanggye) were suitable only for early-maturing varieties. In (1) regions, the similar extent of growth with that in Suwon could be achieved when mid-maturing varieties grown in Suwon are cultivated. Among (2) regions, early-maturing varieties are expected to demonstrate the similar extent of growth with that in Cheorwon in 9 regions except Hamhung, Kanggye, Pyonggang, Yangdok, and Sinpo. For Hamhung and Kanggye, the target PH was assessed as 4cm higher than that shown in Cheorwon. P lant height of 8-14cm and DW of 2-4g per hill greater than those shown in Cheorwon were the target growth for P yonggang, Yangdok, and Sinpo to attain the similar amount of growth with that in Cheorwon. It is suggested that rice varieties for North Korea could be bred by adjusting the target growth at the breeding sites in South Korea.

• Journal of the Korea Society of Computer and Information
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• v.9 no.3
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• pp.121-125
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• 2004

In the most of recognizing systems of hand-written numbers. extraction of feature shape by using character elements shapes and a method of morphological analysis by using then extraction of feature shapes were usually used. In this paper, however, peculiar chain-code is used, and differential code which gets minimal value by differentiating the chain-code which is generated by the peculiar chain-code is made. We found this differential code is very successful in discriminating hand-written numbers according to the result of applying to most of the hand-written numbers. Testing recognition of hand-written numbers by HMM network. From the results, we can recognize of 96.1 percentage hand-written numbers but can not recognize extremely distorted hand-written numbers.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.30 no.4
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• pp.388-397
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• 1985

Forage productivity and sequential changes in forage quality of four rye and two triticale varieties were studied. All the observed characteristics were similar among rye or triticale varieties, but they were different between rye and triticale varieties. Early growth of rye was better compared to triticale varieties, but at heading stage yield in dry weight, digestible dry matter and percent dry matter of triticale were higher compared to rye varieties. Heading stage of rye was earlier than that of triticale by 11 - 14 days. Triticale had longer and broader leaf blades and a higher leaf blade/total dry weight ratio compared to rye. Protein content decreased as plant growth advanced and it was higher in rye before heading, but it was similar after heading compared to triticale. Cellulose and lignin contents of rye increased through 20 days after heading. However, in triticale cellulose increased until heading stage and it levelled off, but lignin content increased rapidly after heading. Among the crude fibers, only acid detergent fibers(ADF) was negatively correlated with in vitro dry matter digestibility(IVDMD) in both rye and triticale. IVDMD of rye decreased rapidly after heading, but it was maintained as high as heading stage up to 15 days after heading in triticale. Protein content and IVDMD in leaf blades were higher than those of culm + leaf sheath, hemicellulose was similar, and cellulose, lignin, and ADF in leaf blades were lower compared to culm + leaf sheath. In the early and middle part of April rye was superior to triticale as a soiling crop because of a better plant growth of rye under the low temperature conditions, but in the later part of April and early part of May triticale was superior to rye because of a rapid decreased in IVDMD of rye after heading and a late maturing characteristics of triticale. Planting both rye and triticale could prolong the utilization period of the soiling crops and increase in yield with better quality compared to a single crop of rye or triticale.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.01a
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• pp.255-256
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• 2013

현재 대부분의 대학에서 학생들의 출결(출석, 결석)사항관리는 수기로 처리하고 있다. 매 수업시간마다 수기로 작성해야하는 출석부는 통계분석이 실시간으로 이루어지지 않기 때문에 학생스스로도 본인의 출결관리의 번거로움이 있다. 본 논문에서는 출결관리의 간소화 및 투명화, 문서의 분실, 실시간 조회를 위한 안드로이드 스마트폰 기반의 학생 출결관리 시스템을 설계하였다.