• Korea Petroleum Association Journal
• /
• no.11 s.81
• /
• pp.109-144
• /
• 1987

이 자료는 최근 영국에너지부의 에너지정보국(EIA)이 발표한 향후 2000년까지의 세계에너지수급에 관한 장기전망보고서로서, 주간 「석유뉴스」(유개공)에서 전재한 것이다. <편집자 주>

• Korea Petroleum Association Journal
• /
• no.5 s.51
• /
• pp.46-53
• /
• 1985

이 자료는 일본 석유연맹이 작년 9월 22일부터 10월 12일까지 3주간에 걸쳐 구미 5개국에 파견했던 「구미주유소 기술조사단 」이 작성한 보고서 가운데 「개황편」과 「향후의 과제 」부분을 전문 번역한 것이다. <편집자 주>

• The tire
• /
• s.161
• /
• pp.41-42
• /
• 1992

이 자료는 ‘92년 6월 29일자 일본 ’주간 타이어신보‘에 폐타이어 재활용에 대하여 ’시멘트업계의 대응을 듣는다‘란 제호로 게재되었던 (사)일본시멘트협회 산하 환경특별위원회 간사회 간사장 반총주일씨와의 인터뷰 기사를 번역, 발췌 수록한 것이다.

• Geophysics and Geophysical Exploration
• /
• v.13 no.2
• /
• pp.144-152
• /
• 2010

To study the thickness variation of volcanic rocks of Jeju Island, microtremor data were recorded at eight and four sites using short-period and broadband seismometers, respectively, for 30 ~ 60 minutes with a 100 Hz sampling rate. During the daytime, these records show increased cultural noise at frequencies above 1.8 Hz. Natural noise occurs in the frequency range of 0.4 to 0.8 Hz in both daytime and nighttime data. Predominant frequencies determined by the H/V spectral-ratio method are in the range of 0.2 ~ 0.7 Hz. These frequencies decrease gradually as the central part of the Mt. Halla is approached. This may indicate that the basement is warped downward beneath the center of the island, which is consistent with previous gravimetric and magnetic models. Assuming an average shear-wave velocity of 1,800 m/s for the overburden basalts, the depths to basement are estimated to be between 640 and 2,140 m.

• Journal of the Korean Geographical Society
• /
• v.37 no.3
• /
• pp.237-246
• /
• 2002

This study classified wintertime bioclimatic zones of South Korea based on daytime and nighttime distribution of wind chill index calculated from climate data during the coldest month for latest 30 years (1971- 2000). The results show that the winter daytime and nighttime wind chill index were influenced by climatic factors such as elevation, land-sea breeze, topology, and sea currents etc. as well as climatic components such as temperature, wind speed, and sunshine, so that South Korea was divided into five bioclimatic zones; Cool day- cold night zone, Keen day- Cold night zone, Keen day-Very Cold night zone, Cold day and night zone, and Cold day-Extremely Cold night zone. Especially, coasts and island areas, except for south coast of Korea, shows Keen bioclimatic response during daytime and Very Cold bioclimatic response during nighttime. This indicates that coasts and island areas, except for south coast of Korea are affected by moonson and land-sea breeze. In addition, highly elevated Daegwallyeong shows Cold bioclimatic response during daytime and Extremely Cold during nighttime due to the influence of adiabatic temperature lapse rate and monsoon. This study offers basic data necessary to make decisions concerning insulation such as clothing and architect etc. by classifying winter bioclimatic zones of South Korea based on various daytime and nighttime distribution of wind chill.

• Journal of The Korean Society of Agricultural Engineers
• /
• v.55 no.6
• /
• pp.1-9
• /
• 2013

미래 기후 정보를 이용한 수문 환경의 단기 미래 예측은 안정적 수자원 공급을 위한 필수적 과제이다. 미국 플로리다 주 중서부 템파지역에서는 주요 수자원 중 하나인 지하수의 효과적 활용을 위해 지하수위 인공신경망 모델 (GWANN)을 개발하여 피압 대수층과 비피압 대수층에 대한 주 단위 평균 지하수위를 월별로 예측하고 그 결과를 수자원 공급 의사 결정에 반영하고 있다. 본 논문은 템파지역에 대한 GWANN 모델을 이용한 지하수위 예측 시스템을 소개하고 모델의 기후 입력 자료의 민감도를 분석함으로써 양질의 기후 정보에 대한 현 시스템의 활용성을 검토하였다. 2006년과 2007년에 대한 연구 결과, 관측 자료를 최적 예측 시나리오 (the best forecast)로 가정하여 적용한 결과는 지하수위 관측 지점에 따라 큰 차이를 보였지만 일반적으로 현 시스템 (현 시점의 실시간 주 단위 평균 강우량을 향후 4주간 동일하게 적용함) 에 비해 예측 성능이 개선되는 것으로 나타났다. 더불어 강우 관측 자료의 백분위 (percentile forecast; 20분위, 50분위, 80분위)를 강우 예측 자료로 활용한 경우에도 현 시스템과 비교하여 일부 나은 결과를 보여주었다. 그러나 지하수위 예측 모델을 활용하지 않고 현 시점의 지하 수위가 지속된다고 가정하는 경우 (na$\ddot{i}$ve model) 향후 2주간의 예측 결과가 best forecast 경우에 비해 높은 정확도를 보이는 등, GWANN 모델의 단기 예측에 대한 양질의 강우 예측 정보의 활용성은 낮으며, 향후 3주 이상에 대한 예측 성능에 있어 best forecast결과가 na$\ddot{i}$ve model 결과에 비해 높은 정확도를 보이기 시작하는 것으로 나타났다. 또한 GWANN 모델의 예측 성능은 적용 기간과 지역 및 지하대수층의 특성에 따라 큰 다양성을 가지는 단점을 보여 강우 예측 자료 활용에 앞서 모델 개선의 필요성이 있다고 판단된다. 본 연구는 단기수자원 공급 계획 수립을 위하여 사용되는 지역 모델링 시스템에 대한 기후 예측정보의 활용성 평가를 위한 방법론으로 고려될 수 있을 것으로 기대된다.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.38 no.3
• /
• pp.253-263
• /
• 1993

Climatological informations have not been fully utilized by agricultural research and extension workers in Korea due mainly to inaccessbilty to the archived climate data. This study was initiated to improve access to historical climate data gathered from 72 weather stations of Korea Meteorological Administration for agricultural applications by using a microcomputer-based methodology. The climatological elements include daily values of average, maximum and minimum temperature, relative humidity, average and maximum wind speed, wind direction, evaporation, precipitation, sunshine duration and cloud amount. The menu-driven, user-friendly data retrieval system(CLIDAS) provides quick summaries of the data values on a daily, weekly and monthly basis and selective retrieval of weather records meeting certain user specified critical conditions. Growing degree days and potential evapotranspiration data are derived from the daily climatic data, too. Data reports can be output to the computer screen, a printer or ASCII data files. CLIDAS can be run on any IBM compatible machines with Video Graphics Array card. To run the system with the whole database, more than 50 Mb hard disk space should be available. The system can be easily upgraded for further expansion of functions due to the module-structured design.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.32 no.3
• /
• pp.294-301
• /
• 1987

This experiment was carried out to investigate the occurrence of tiller and its proportion to grain yield under 5 different plant densities. Plant density 5 x 5cm was more favorable for increasing the number of spikes per unit area, where leads to improve grain yield. Effective tillers showed only main stem, M$_1$-axil and M$_2$-axil, indication more effective tillers in M$_1$ rather than main stem. Every tillers held at least 6 leaves to bear spikes, indicating that main stem has 12 -13 leaves. Leaves attached on main stem M$\sub$0/ and M$_1$ were very important as main source of photosynthesis, especially under more compart plant densities while leaves of M$_1$ occupied 66.8% in a plant. The proportion of grain yield of each tiller to total grain yield per plant was high in main stem under conpact plant density, in M$_1$ stems under less compact plant density, and in M$_2$ -stems under wide plant density, indicating same result on multiple regression analysis.

• Journal of Digital Convergence
• /
• v.15 no.5
• /
• pp.305-315
• /
• 2017

This study examined the relationships sleep habits, daytime sleepiness, and problem behaviors. A cross-sectional survey design was used. Participants were 276 adolescents. Sleep habits, daytime sleepiness and problem behavior were measured by Adolescent Sleep Hygiene Scale (ASHS), Epworth Sleepiness Scale (ESS), and Korea-Youth Self Report (K-YSR), respectively. Data were collected from July to August, 2014 using self-reported questionnaires. Participants were middle school students, perceived their sleep time as enough and their sleep quality as good, have no problem behavior during sleep, and have no caffeinated drink for last a week were more likely to have higher score of sleep hygiene. Sleep habits score was associated negatively with daytime sleepiness and problem behaviors. Sleep impacts on physical growth, behavior, and emotional development of adolescent. Therefore, it is necessary to develop a sleep enhancement program for the good sleep habits of the adolescents, and to make efforts at home and school.

• Journal of Digital Convergence
• /
• v.14 no.4
• /
• pp.487-494
• /
• 2016

The purpose of this study was to examine the effect of Health exercise program on insulin resistant and blood lipid factor of elderly women for 12 weeks. The two groups were classified into one group(exercise group: EG) with aerobics exercise and band exercise both, the other group(control group: CG) controled. The group of EG was applied to doing aerobics exercise and band exercise 4 times for 60 minutes a week. The intensity of the exercise was ACSM. Each measurement variable was measured before and after 12 weeks to investigate the effect. During this study the result came out with this step. First, EG have shown interaction with blood lipid(TC, HDL, LDL, TG) and blood pressure(SBP, DBP)factor. Second, EG have shown interaction with insulin resistant(insulin, glucose). Therefore, this study gives us positive result to effect of health exercise program on blood lipid factor and insulin resistant factor of elderly women for 12 weeks.