• Korean Journal of Ichthyology
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• v.19 no.4
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• pp.299-305
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• 2007

Ecological characteristics of Koreocobitis rotundicaudata was investigated in the mid-upper part of the Naerin stream in Hongcheon gun, Gangwon do, Korea from April 2006 to March 2007. It inhabited mostly on the cobble and pebble bottoms with water-current velocities of 0.3~0.8 m/sec and depths of 30~80 cm. The sex ratio of female to male was 1 : 0.78. It was presumed that the spawning season was from May to June with water temperatures $20.1{\sim}23.1^{\circ}C$. Sexually matured individuals appeared over the two years of age. Body length frequencies indicated that the 40~69 mm group is over one year old, the 70~109 mm over two years old, and 110~142 mm over three years old. The average number of eggs in the ovaries was 1,365. Main prey materials were Ephemeroptera and Chironomidae mostly.

• Journal of Nutrition and Health
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• v.41 no.1
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• pp.100-110
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• 2008

The present study estimates intake levels of dietary fiber (DF) in Korean adults aged 20 and over, using a newly established dietary fiber database for 3,149 food items, as well as 24-hour recall method data from the 2001 Korean National Health and Nutrition Survey. Dietary fiber intake and food groups are analyzed by gender, age, and region. The average dietary fiber intake, per capita of Korea was estimated to be 12.24g/1,000kcal or 23.58g/day. Calorie-based dietary fiber intake for 20-49 year-old-Korean males, 20-29 year-old females, and the adults who resided in metropolitan areas was under the Adequate Intake for DF, 12 g/1,000 kcal. Further, the dietary fiber intake after adjusting energy intake in people over 75 year-old was estimated to be 75% of AI. Vegetables, cereals and fruits were three major sources of DF for Korean, making up approximately 75% of DF. Regarding the subjects of this study, major sources of dietary fiber were Kimchi and well-polished rice, which supplied 13.98% and 9.16% of total dietary fiber intake, respectively. The result of this study could contribute to the establishment of DRIs for dietary fiber, after adjusting energy intake for Korean aged 75 years and over. The beneficial health effects of DF and the necessity of nutritional education in this area should be continuously emphasized concerning 20-29 year-old people and metropolitan adults.

• Investigative Magnetic Resonance Imaging
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• v.20 no.2
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• pp.132-135
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• 2016

We report the case of a 43-year-old male with both giant left atrial appendage (LAA) aneurysm and drug-refractory atrial fibrillation (AF). The patient was treated with percutaneous electrical isolation of cardiac arrhythmogenic substrate, and has been free of AF symptom over one year. Although the surgical resection of giant LAA aneurysm is mostly used to prevent systemic thromboembolism, we have performed follow-up of the giant LAA aneurysm using cardiac magnetic resonance (CMR) imaging and transesophageal echocardiography (TEE) after the successful catheter ablation of refractory AF. At one-year follow-up CMR, the giant LAA aneurysm showed remarkable enlargement as well as decreased contractility. Additionally, one-year follow-up TEE showed spontaneous echo contrast as an indicator of blood stasis in the giant LAA aneurysm. Those findings of giant LAA aneurysm suggest that the risk of thromboembolism may be high despite termination of AF.

• Journal of the Economic Geographical Society of Korea
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• v.20 no.2
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• pp.245-258
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• 2017

Ministry of Land, Infrastructure and Transport established a comprehensive plan for 83 old industrial complexes over 20-year. They implemented the competitiveness of industrial complex in September 2013, and revitalizing and remodelling comprehensive plan in December 2014. With significant influences of old industrial complex in September 2009, Ministry of Land, Infrastructure and Transport chose the 4 districts for the first pilot project. In December 2014, the second pilot project districts were established. In addition, there were 10 districts in April 2016 and 5 districts in April 2016 as the third pilot project and 5 distiricts in March 2017 as the fourth piolt project. Ministry of Land, Infrastructure and Transport currently suggests 23 districts to regenerate among 83 old industrial complex districts over 20 years. Even though the government suggests the certain 23 districts, this research selects the bottom 23 districts (30%) represented through the Focus Group Interview and compare them with the list government-suggested. As a result, there were some unlisted industrial complex districts. This research suggests the unlisted industrial complex districts which need to be regenerated and their problems, therefore this could be used as a guide for feasibility of old industrial complex regeneration implement.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.30 no.1
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• pp.15-19
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• 1985

This study was carried out to develope the equations for estimating the areas of leaflet, leaf, and total leaf for 1, 2, 3, 4, 5, and 6 years old ginseng, Panax ginseng, grown in field. The highest correlation coefficient was found between leaflet area and product of leaflet length and width(LW) in all leaflets although leaflet shape varied somewhat according to the position and plant age. It was possible to estimate area of the leaf, and total leaf by one central leaflet in a compound leaf. The equations for estimating the leafet, leaf areas of 1 year differ to those of over 2 years old plant, but there was no difference among those of 2, 3, 4, 5, and 6 years. The equations for 1 year old are A =0.64 LW, A' =A/0.38, and for 2, 3, 4, 5, and 6 years old, A =0.60 LW, A' =A/0.32, A" =A' x number of leaves of central leaflet(A), leaf(A') and total leaf areas(A"), respectively. The estimation of leaflet, leaf, total leaf areas of ginseng plant grown under 20% light-transmittance rate was possible by using the equations mentioned.

• Child Health Nursing Research
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• v.12 no.1
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• pp.65-74
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• 2006

Purpose: The purpose of this study was to investigate differences in Korean child-rearing practices between the generations of young mothers and grandmothers. Method: The participants were 98 mothers who were 20 to 39 years old and had raised one-year-old child and 103 grandmothers who were over 60 years old and had raised their children in a small city. Data were collected through self-report questionnaire based on the Korean traditional child-rearing practice from Yoo(1986). The data were analyzed using the SPSS Win 10.0 program. Results: Of 37 items in the categories of feeding and weaning, health management and taboo matters, play, and baby celebrations, the grandmothers practiced 13 items (35%) more frequently than the young mothers. However, no generation differences were found in 21 items (57%), and 3 items were practiced more frequently by the young mothers. For the young mothers, there were 15 items (41%) which were practiced over 70%, 7 items (19%) which were practiced less than 30%. Conclusion: It seems that some Korean traditional child-rearing practices were transferred to modern child-rearing practices. Therefore pediatric nurses need to pay attention to traditional child-rearing practices for the best health, growth and development of children.

• Korean Journal of Health Education and Promotion
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• v.13 no.1
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• pp.128-162
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• 1996

Using Random Sampling, the authors measured the body heights and weights of 31,151 persons - 17,102 in males and 14,049 in females from metropolitan, urban and rural areas between 6 to over 80 year old - for the purpose of investigating the type and the actual condition of the Korean's growth and development. At first, on the basis of the results, the authors measured the growth and development, various kinds of physiques, nutritional index of the 6 to 20s age group. Second, the authors presented the standard body weight of males and females by their body height, who were in the end of their growth (20-29 age group). Third, the authors calculated and presented the normal adapted body weight of the age group who were over 30 age after the growth had been completed. Forth, the author presented the obesity rate of the adults over 20 years old by body mass index. Finally, the authors compared chronological change of the Koreans' body heights and body weights with the results of other researchers. 1. Body Measurement Rapid growth, in terms of body height, which is described by a straight line on a growth curve has been observed among males in the ages 6-13 and among females 6-14. That growth curve turned out to be slower among the people of higher ages by both sexes. The cross-over occurred in both sexes at 11-14. The highest growth rate for a year is at 13-16 for males and 11-13 for females. This indicates that females enter a rapidly growing stage 2 years earlier than males. 2. Various Physiques and Nutritional Index Rapid growth, in terms of Relative Body Weight Index, which is described by a straight line, has been observed among males in the ages 6-16 and females in the ages 6-14. The cross-over occurred in both sexes 12.5-14.5 age in the adolescencent period. Whereupon females outgrow males. The Roher Index displayed more good value in case of females than male and in the adolescent period, the level of fullness is lower than after the completion of development. The Kaup Indices of both sexes increase with age. The index is less than 2.0 for males in 6-14 age group and for females in 6-13 age group and with this, it appeared that development of horizontal axis to long axis is poor. The index is more than 2.0 after 15 age group in males and 14 age group in females and developmental state4 age group and for females in 6-13 age group and with this, it appeared that development of horizontal axis to long axis is poor. The index is more than 2.0 after 15 age group in males and 14 age group in females and developmental state Body Mass Index is less than 20 for males 6-14 age group and for females in 6-13 age group. In the case of the higher age group, that index maintains a normal state.

• Journal of the Korean Society of Clothing and Textiles
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• v.43 no.2
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• pp.243-254
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• 2019

This study investigates the yoga clothing market for women over 50 years old. The study found that the target demographic felt that many brands were participating in the Yoga Wear market, but most targeted 20-30 year old women. They felt it was difficult to find brands for women over 50 years old. One common complaint by the target demographic was that they experienced discomfort when wearing Yoga Wear currently available in the market. They attributed this to the fact that even the largest sizes available were not appropriate for their body size. They also noted that there is a large variety of designs presently available in the market; however, most are too colorful and revealing for their tastes. Females in their 50s or older preferred less colorful and less revealing clothes. They noted that they reacted sensitively to fat in the forearms due to changes in body shape as they grew older and wanted looser clothes. Elasticity and hygroscopicity of material are therefore very important buying criteria for the target demographic. These criteria were used to propose a prototype yoga suit designed for women over 50 years old.

• Journal of the Korean Solar Energy Society
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• v.39 no.2
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• pp.45-55
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• 2019

More than 76% of the detached houses in Korea are over 20 years old. These old detached houses have poor energy efficiency. According to the 2017 Housing Census (Statistics Korea), more than 50% of low-income families live in detached houses. Therefore, the improvement of energy efficiency in old detached houses is needed from the viewpoint of energy welfare. The general method of building energy modelling for the verification of energy efficiency is based on the construction year data of "Building Design Criteria for Energy Saving" due to the cost and time involved in collecting the thermal performance data of buildings. There is poor accuracy with the deterioration of long-term aging of building materials. Also, the selection of alternatives for energy performance improvement is based on the items to be applied, not a performance improvement goal. It is difficult to calculate energy performance that reflects variations in various parameters with dynamic energy simulations. In this study, the influence of long-term aging is used to accurately predict the energy performance of old detached houses. The building energy modelling method is called ENERGY#, which is a static analysis method based on ISO13790. Energy performance is evaluated by a combination of input variables including building orientation, insulation of walls and roof, thermal performance of windows and window/wall ratio, and infiltration rate. Finally, this study provides a way to determine alternatives that meet energy performance improvement goals.

• Korean Journal of Ecology and Environment
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• v.42 no.1
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• pp.26-31
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• 2009

Ecological characteristics of Cobitis pacifica inhabited in the Yeongok Stream, Gangwon-do, Korea was investigated from May 2006 to August 2007. The major habitat was composed of sand bottom with current velocities of $0.23{\sim}0.56m\;sec^{-1}$ and depths of $20{\sim}50cm$. The sex ratio of female to male was 1 : 0.93. It was presumed that the spawning season was the period of water temperatures of $25{\sim}27^{\circ}C$. Sexually matured individuals appeared over the two years of age. Frequency analysis of body length indicated that the group with $40{\sim}59mm$ in body length was one-year-old, the group of $60{\sim}89mm$ was two-years-old, the group of $90{\sim}109mm$ was three-years-old, and the group of over 110 mm was four-years-old. The average number of eggs in the ovaries was estimated as 809 per matured female. Main prey items were Ephemeroptera and Diptera.