• Journal of Environmental Science International
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• v.18 no.10
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• pp.1089-1101
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• 2009

In this paper, changes in the intensity (e.g., central pressure and maximum sustained wind speed) of Tropical Cyclone (TC) in summer in the regions located at $30^{\circ}N$ in East Asia from 1988 to 1991 were found. The intensity of TC from 1991 to 2007 was much higher than that of TC from 1965 to 1988. The reason for this was that the frequency of TCs passing China from 1991 to 2007 was much lower than that of TCs from 1965-1988 because a northeasterly wind caused by high-pressure circulation in East Asia got severer along the East Asian coast. Instead, TCs moved from the eastern region of the Tropical West Pacific to Korea and Japan mainly after passing the East China Sea due to the low-pressure circulation strengthened in the subtropical waters of East Asia. In addition, low Vertical Wind Shear (VWS) was created along the mid-latitude regions of East Asia and the main path of TCs from 1991 to 2007. Most of the regions in the Northwestern Pacific showed higher Sea Surface Temperature (SST) from 1991 to 2007, and had a good environment where TCs were able to maintain a higher intensity on the mid-latitude. In particular, a low sensible heat flux occurred due to high snow depth in East Asia in the spring of 1991 to 2007. Accordingly, the lower layer of East Asia showed high-pressure circulation, and the sea surrounding East Asia showed low-pressure circulation. Thus, the typical west-high, east-low pattern of winter atmospheric pressure was shown. The possibility of snowfall in East Asia in spring to be used as a factor for predicting the summer intensity of TC in the mid-latitude regions of East Asia was insinuated. The characteristics of TC in a low-latitude region were the same in Korea. The latest intensity of TCs got higher, and the landing location of TCs gradually changed from the west coast to the south coast.

• Journal of Bio-Environment Control
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• v.19 no.1
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• pp.6-11
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• 2010

This experiment was conducted to investigate the effect of greenhouse orientation on the greenhouse environment and the growth and yield of tomato cv 'Momotaro-Yoku' in forcing culture. The photosynthetic phpton flux density (PPFD) of a.m was higher in north-south orientation than that in east-west orientation and it was opposed in the p.m. Mean PPFD of a day was higher in east-west orientation than that in north-south orientation because the light transmitting area became larger in east-west orientation with decrease of incidence angle. The PPFD at 60 cm point above ground of all furrows was poor due to shadows near plants and it was higher in north-south orientation than that in east-west orientation. The air temperature in the greenhouse was higher in east-west orientation than that in north-south orientation but there was no significant difference since mid February as solar altitude goes up. The soil temperature was some higher in east-west orientation than that in north-south orientation and there was not significant difference among ridges. In east-west orientation, as ripening was promoted, high early yield of tomato were obtained. So total yield was greater about 8% in east-west orientation than that in north-south orientation. Therefore, it was considered that east-west orientation is more advantageous than north-south orientation for forcing culture of tomato.

• Journal of Korean Dental Science
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• v.2 no.1
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• pp.31-38
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• 2009

With today's social and cultural personal interactions, greater leisure time and participation in sports activities, and growing traffic volume, the risk of physical trauma has increased markedly. This is a clinical and retrospective study of patients exposed to oral and maxillofacial trauma. We clinically observed 72 patients with trauma in the Department of Oral and Maxillofacial Surgery, Kyunghee University Dental Hospital, from June 2006 through November 2007. The following data was obtained: 1. The male:female ratio of patients having experienced physical trauma was 6.2:1, with most patients in their twenties. 2. Traffic accident (37.5%) was the most common cause of trauma. 3. The highest incidence of fracture occurred to the zygomatic arch(22.1%) among mid-facial fractures and angle(37.5%), symphysis(35.4%) in mandible fractures. 4. Open reduction (88.9%) was the most frequently used form of treatment. Closed reduction was performed on the remaining 11.1% of cases. 5. Teeth and alveolar bone damage occurred in 23.6% of all cases. 6. Other injuries that were related to mid-face fracture occurred in 27.8% of all cases. 7. Post-operative complications occurred in 31.9% of cases, and the highest complication was the nerve injury.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.2
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• pp.208-217
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• 2021

This study described the fishing characteristics of Pacific herring Clupea pallasii and examined the relationship between its catch and sea temperature in Korean waters from 1970 to 2019. Although the herring catch in Korean waters stayed below 1,000 tons per year from the mid-1970s to mid-1980s, the catch in the winters in the East Sea of Korea started to increase markedly after 1987-1988, when the sea surface temperature (SST) seemed to shift to a warmer regime. Since the mid-2000s, overall, herring was caught throughout the year in the East Sea and eastern South Sea of Korea, and its catch significantly increased by around 30,000 tons per year. The main fishing grounds of herring in the poor fishing years until the mid-1980s were possibly formed in the western offshore of Korea, and subsequently the fishing grounds were distributed in the eastern coast of Korea. While the standardized catch per unit effort (CPUE) for two main fisheries of herring catch was significantly correlated with the herring catch since the 2000s, there was a gradual decline since the 2010s. The herring catch in the East Sea had significant positive correlations with SSTs, but that in the West Sea had a significant negative correlation.

• Journal of East-West Nursing Research
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• v.28 no.2
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• pp.122-131
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• 2022

Purpose: This study aimed to identify the factors related to fear of falling (FOF) in different age groups from community-dwelling mid to late-adults. Methods: To identify the factors related to FOF, data of 162,684 adults over 45 years of age from 2019 Community Health Survey was analyzed using logistic regression with complex samples. Results: Factors related to FOF found in all age groups were sex, previous experience of falls, physical activity levels over moderate intensity, subjective health status, number of chronic diseases, stress, depression, and cognitive decline. In the 45-64 age group, the FOF was significantly higher in the groups of low education level and low monthly household income. In the 65-74 and over 75 age groups, the FOF was significantly higher in the groups of not living with spouse and walking not practiced. Conclusion: We suggests that understanding of risk factors and early detection of fall risk patients in each age group are necessary to establish and apply tailored fall prevention programs for prevention and management of the FOF in community-dwelling mid to late-adults.

• The Journal of Pediatrics of Korean Medicine
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• v.22 no.2
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• pp.125-139
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• 2008

Objectives : The study was designed to find out the relationships between rhinitis, quality of sleep, growth among children with chronic rhinitis. Methods : This research was performed in 50 children from November 2007 to May 2008. We measured height, weight, body mass index of those children and asked to answer to the questionnaires that consist of nasal symptoms, period of time with rhinitis, sleep symptoms, parent's height, present illness, and medical history. We also analyzed correlations with this factors obtained from questionnaires. Results : 1. In 50 subjects, there were significant correlations between nasal obstruction, the quality of sleep, and the between quality of sleep and growth. But, there were not significant correlations between nasal symptoms and growth. 2. In 24 preschool children, frequency of waking up during sleeping and the number of snorers were higher and quality of sleeping was worse than those in the children who were attending school. And there were significant correlations between quality of sleep and nasal obstruction. An average of RH-MPH(Recent Height-Mid-Parental Height) is $-7.74{\pm}36.51(%)$ which means they aren't as tall as MPH(Mid-Parental Height). 3. In 26 school children, there were significant correlations between symptoms and period of rhinitis, quality of sleep and growth. Conclusions : Children with chronic rhinitis have low quality of sleep and low growth. But more studies are needed.

• 한국해양학회지
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• v.19 no.1
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• pp.31-35
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• 1984

The seasonal variation of sea surface temperatures (SST) in the neighbouring seas of Korea was studied performing the harmonic analysis of the monthly mean SST data of 15 years (1961-1975) at 182 stations routinely collected by the Fisheries Research and Development Agency. The mean SST in the West Sea (Yellow Sea) is lower than that in the East Sea (Sea of Japan) whereas the annual range of SST in the West Sea is much larger than that in the East Sea. The maximum SST occurs between mid August and early September. The seasonal variation of SST in the seas of Korea is influenced by incoming radiation and heat advections by ocean currents and winds.

• Journal of East-West Nursing Research
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• v.15 no.2
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• pp.102-109
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• 2009

Purpose: The study was conducted to ascertain the use of the complementary alternative medicine (CAM) in stroke patients, in order to provide the appropriate CAM information to patients recovering from stoke. Methods: Subjects were 201 stroke patients who were randomly selected from a health care center and a welfare center. Data from a self-administered questionnaire collected from February to April 2009 was analyzed using SPSS/WIN 12.0. Results: Subjects averaged 67.4-yr-of-age. Of the 201 subjects, 69.2% had used CAM. CAM use was statistically significant in diagnosis, duration of post stroke, paralysis, and education about CAM. CAM was used in the mid-portion of treatment by 47.3% of the subjects, and 41.7% used it for more than a year. Of those using CAM, 52.7% of the subjects responded that their reason was the belief in the treatment's beneficial effects. Of the subjects 89.2% reported most frequent use of oriental medicine. Conclusions: The majority of stroke patients surveyed frequently and continuously used CAM in their mid-period of treatment expecting positive effects.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.6
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• pp.504-511
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• 1990

Weather data acquisition and potential evapotranspiration (PET) calculation procedure were investigated to support the agricultural development efforts in the mid-altitude mountainous region of Cheju Island. Automated weather stations (AWS) were installed at two points representing the east and the west of the study area. A personal computer was employed to collect the near-real time weather data from AWS through the public telephone line. Hourly data were available for solar radiation, air and soil temperature, relative humidity, wind speed and direction, and precipitation. Based on the data for the month of June 1989, daily climatic features were comparatively analyzed for the two areas and the Penman equation was used to calculate PET. Air temperature was higher by 1 to 2 degree C in the east due mainly to the higher solar radiation and partly to the Fohn effect caused by the daytime southwesterly blowing over Mt. Halla. Diurnal march of soil temperature lagged by 4 hours behind that of air temperature and the diurnal range for 10cm subsurface soil was 3 degree C. Wind was consistently stronger and a marked sea-land breeze circulation was detected in the west. Calculated PET values were higher in the east by 6% than in the west. Overall values from the east and the west of the mid-altitude mountainous region were higher by 30% than those of the coastal region, which were estimated from the Class A Pan evaporation measured by the Korea Meteorological Service Offices.

• Korean Journal of Pharmacognosy
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• v.38 no.2 s.149
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• pp.157-163
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• 2007

Trillium tschonoskii Maxim. is a kind of 64 endangered plant species designated by the Ministry of Environment in Korea. It is very a rare native plant throughout the country. Therefore, this study was conducted to investigate the native T. tschonoskii in Ulleung Island for their distribution and ecological characteristics. They were mostly distributed valley, mid-slope of the mountain from 186 to 458 m altitude. They had a little low light conditions as they faced west, north west, south west, south-south west, north-north east and east-east north. They were provided with slightly humid condition. Aerial humidities of these quadrates were variable as 21.5-71%. They were located on the variable slopes of 5 to 43 degrees. Soil humidity was slightly dry. Native sites were semi-shaded because tree layer such as Tilia insularis, Zelkova serrata, okamotoanum etc.and sub-tall tree layer such as Ligustrum foliosum, Comellia japonica, Tilia insularis, Callicarpa japonica and so on were grown near by. Woody plants such as A. Okamotoanum, Sorbus commixta, Fagus japonica var. multinervis etc. were frequently observed. These environmental conditions were suitable that T. tschonoskii grows up naturally because of high Percentage as 52.78% of blooming individuals in this study. These native sites were classified with three communities, T. tschonoskii-Majanthemum dilatatum community, T. tschonoskii-Anthriscus sylvestris community and T. tschonoskii-Hepatica maxima community in accordance with altitude and aerial humidity. The best way ffr the preservation of T. tschonoskii habitats and maintainance of its recent population is maintained in recent environmental condition and ecological condition without any management by human-being.