• Journal of Life Science
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• v.18 no.8
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• pp.1154-1158
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• 2008

The purpose of this study was to analyze the effect of body composition, leptin, total cholesterol and BMD on a long-term exercise paticipation in middle-aged women. Twentieth subjects were divided into three groups, obesity group, over-fat group and normal group. These data were analyzed by One-way ANOVA and Corelation Analysis. Obesity group was higher than over-fat group in body fat volume (p<.001). Obesity group was higher than other groups in BMI (p<0.05). Normal group was higher than obesity group in radius BMD (p<0.01). Body fat was positively correlated with BMI (Rsq=0.8411) and radius BMD (Rsq=0.6736). but, BMI was negatively correlated with tibia BMD (Rsq=0.6714).

• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.4
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• pp.382-391
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• 2020

In this study, we used artificial intelligence algorithms for the prediction of dissolved oxygen in Jindong Bay. To determine missing values in the observational data, we used the Bidirectional Recurrent Imputation for Time Series (BRITS) deep learning algorithm, Auto-Regressive Integrated Moving Average (ARIMA), a widely used time series analysis method, and the Long Short-Term Memory (LSTM) deep learning method were used to predict the dissolved oxygen. We also compared accuracy of ARIMA and LSTM. The missing values were determined with high accuracy by BRITS in the surface layer; however, the accuracy was low in the lower layers. The accuracy of BRITS was unstable due to the experimental conditions in the middle layer. In the middle and bottom layers, the LSTM model showed higher accuracy than the ARIMA model, whereas the ARIMA model showed superior performance in the surface layer.

• Korean Journal of Ecology and Environment
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• v.38 no.4 s.114
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• pp.439-444
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• 2005

The environmental quality of the middle-reach of the Yahagi River has deteriorated in recent years. The nutrient dynamics within the reach were investigated to explain the changes. Seasonal pattern of $NO_3\;^--N$ concentration tended to stay low from April or May through July or August and then increased till winter or early spring, although there were peaks during high flow periods in mid-September, 2000 and late-August, 2001. No clear seasonal changes were observed in $PO_4\;^{3-}-P$ concentration. In the bimonthly records from 1980-2002, the DIN concentrations on January and March were higher than other months whereas the average daily flows on January and March were lower than they were in other months. The mean DIN concentration showed a high negative correlation with the median of average daily flow. In the past 50 years, the average concentration of DIN (excluding nitrite) was 0.21 mg $L^{-1}$ in 1952-1953. The concentration was about twice this high around 1980, and it is about three times this high at present. On the other hand, the average concentration of $PO_4\;^{3-}-P$ was below the limit of detection in 1952-53. However, it increased to almost 0.03 mg $L^{-1}$ around 1980, then decreased to approximately 0.016mg $L^{-1}$ at present. Our results suggest that the increasing DIN concentration is one of the causes of environmental change in the Yahagi River. We conclude that controlling the DIN concentration is essential for improving the river environment.

• Journal of Fisheries and Marine Sciences Education
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• v.17 no.2
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• pp.193-208
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• 2005

The object of this study is to provide a framework of increasing the effectiveness of the R&D planning of experts in fisheries and the education of students with the theoretical background and analytical skills through the adoption of technology roadmapping process in the marine production industry. The study was conducted by fact-finding surveys and the response content for surveys obtained from each expert advisor in the field of fisheries and maritime affairs such as fishery industries, some government organizations and research institutes including the Ministry of Maritime Affairs and Fisheries (MOMAF), National Fisheries Research and Development Institute (NFRDI) and fisheries-related universities was analyzed. The major implementation tasks to effectively achieve the basic goals of technology roadmap for short and middle-term research and development in the fisheries production field are as follows: 1. Research in order to achieve the realization of community-based resource management fisheries or fishermen-oriented co-management fisheries with paradigm shift in fisheries management. 2. Research in order to derive the construction of cost reducing and manpower saving systems in fishery-related science, technology and engineering. 3. Research in order to create the high value-added fisheries products with a focus on the upgrading of processing, freezing and refrigerating facilities, the reduction of logistics costs and the minimization of distribution steps. 4. Research in order to achieve the realization and development of environmental-friendly fisheries and internationally competitive fisheries through restructuring the entire fishing industries, in particular, small-scale fisheries. 5. Research in order to achieve the effective utilization of fisheries resources with a new creation of clean and living marine environment by fisherman under the balanced management and protection of marine living resources and fishing grounds.

• 한국체육학회지인문사회과학편
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• v.55 no.6
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• pp.691-700
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• 2016

The purpose of this study was to investigate the effects of long-term endurance exercise or resistance exercise training on muscle anabolic/catabolic pathway. 50wks-old male Wistar rats(n=30) were randomly assigned for 3 groups (sedentary, endurance exercise, resistance exercise group). After 12-week of training, plantaris muscles were dissect to measure protein level. Akt/mTOR signal-related proteins were significantly increased only after resistance exercise training, but catabolic signal-related proteins, FoxO1 and MuRF1, were significantly decreased after resistance and endurance exercise training. After endurance exercise training, AMPK and PGC-1α protein levels were significantly increased. Therefore, the endurance exercise training has been shown to affect the protein balance of aging muscle through inhibition of muscle protein catabolism. The present results suggest the possibility that not only resistance exercise but also endurance exercise will be affectable to keep or increase muscle volume and capacity of middle-aged people.

• Journal of Wetlands Research
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• v.15 no.4
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• pp.493-500
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• 2013

Comparisons of surface sediment distributions in summer 1997 and 2011 and elevations on the tidal flats in April 1998 and March 2013 had been used for understanding the long-term changes of sedimentary environments at southern Kanghwa tidal flat, west coast of Korea. The mud sediments dominated in the eastern part and sandy mud sediments dominated in the western part of the tidal flat in 1997. In 2011, the surface sediments were dominant mud and sandy mud at Sunduri and Tonggum in the eastern part, sandy mud at Tongmakri in the middle part, and sand and muddy sand at Yeochari and Changhwari tidal flats in the western part. The area of mud sediments had decreased, but that of sand-mud mixed sediments extended to eastward tidal flat for 14 years. The long-term topographic changes showed that deposition occurred at Tongmakri and Yeochari and erosion occurred at Changhwari tidal flat during 15 years. These changes should be effected the local hydrodynamic changes by several constructions near the tidal flat since the 1990s.

• International Journal of Advanced Culture Technology
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• v.10 no.2
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• pp.79-85
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• 2022

Article 10 of the Constitution All citizens have dignity and values as humans and have the right to pursue happiness. There is a need for support measures such as a means to realize the respect of dignity and values as humans, and how to efficiently maintain policies on welfare for the elderly classified as the socially disadvantaged. It was considered necessary to develop an elderly-friendly city for economic, physical, and social life. Dasan Jeong Yak-yong's respect for adults was to practice the ideology of Confucianism, so this was the most important thing in the past Joseon Dynasty. In particular, it was considered important to think of adults first in practicing filial piety.This study focuses on the long-term care insurance system for the elderly, one of the welfare policy measures for the elderly. The significance of implementing the long-term care insurance system for the elderly is to benefit not only the elderly, but also all generations, including the middle-aged and children who were in charge of long-term care. To this end, the government should properly manage the factors of the social insurance financial crisis caused by the low birth rate and aging population.In addition, concerns about health insurance are high, so it is necessary to secure an appropriate level of government budget for health insurance financial management and minimize unnecessary non-benefit. In addition, it is necessary to induce appropriate medical use through connection with construction medical insurance.

• Journal of Korean Neurosurgical Society
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• v.59 no.4
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• pp.385-391
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• 2016

Objective : The purpose of this study was to evaluate long-term follow-up radiologic/clinical outcomes of patients who underwent anterior cervical discectomy and inter-body fusion (ACDF) with stand-alone cages (SAC) in a single academic institution. Methods : Total 99 patients who underwent ACDF with SAC between February 2004 and December 2012 were evaluated retrospectively. A total of 131 segments were enrolled in this study. Basic demographic information, radiographic [segmental subsidence rate, fusion rate, C2-7 global angle, and segmental angle changes)/clinical outcomes (by Odom's criteria and visual analog score (VAS)] and complications were evaluated to determine the long-term outcomes. Results : The majority were males (55 vs. 44) with average age of 53.2. Mean follow-up period was 62.9 months. The segmental subsidence rate was 53.4% and fusion rate was 73.3%. In the subsidence group, anterior intervertebral height (AIH) had more tendency of subsiding than middle or posterior intervertebral height (p=0.01). The segmental angle led kyphotic change related to the subsidence of the AIH. Adjacent segmental disease was occurred in 18 (18.2%) patients. Total 6 (6%) reoperations were performed at the index level. There was no statistical significance between clinical and radiological outcomes. But, overall long-term clinical outcome by Odom's criteria was unsatisfactory (64.64%). The neck and arm VAS score were increased by over time. Conclusion : Long-term outcomes of ACDF with SAC group were acceptable but not satisfactory. For optimal decision making, more additional comparative long-term outcome data is needed between ACDF with SAC and ACDF with plating.

• Journal of the Korean Society of Earth Science Education
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• v.13 no.1
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• pp.15-28
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• 2020

This study aimed to develop an HTE (It is an abbreviation for Here, There, and Everywhere) STEAM program combining with the use of an analogy in a middle school subject unit 'the solar system' and realize creative education for intelligent information society through a process of verifying the effectiveness of the program. For reference, the program was applied to 354 students in the first grade of two middle schools in South Korea - one was A middle school in Sejong City, the other B middle school in Pyeongtaek City. The STEAM program was revised and made up for the weak points for three times by a group of experts, and then it got verified for validity. The final version of the program was applied to middle school education sites in Korea for six periods in total. In other to confirm the effectiveness, two types of tests - logical thinking ability test and STEAM attitude test - were conducted before and after the program treatment. On top of that, the STEAM satisfaction test was also implemented in order to explore the students' recognition of the program after the program treatment. The results of this study were as follows. First, it turned out the STEAM program using the analogy was effective in improving the students' logical thinking ability. Second, the STEAM program blended with the analogy was also effective in improving the students' STEAM attitude. Third, the students' recognition of the STEAM program using the analogy was quite positive, and the program was efficacious in intriguing the students' interests in science. Judging from the results of the program, the students' satisfaction with the classes they take will be expected to be higher if the STEAM program is implemented in the next-term classes with more sufficient time.

• Journal of the Korea Society of Computer and Information
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• v.25 no.2
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• pp.163-170
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• 2020

In this paper, we purpose to describe the relationship and influencing factors among self-esteem, loneliness on subjective well-being of middle-aged women. The subjects were 157 middle-aged women through convenience sampling residing in S city, C and three G provinces. The data were collected from June 15th to July 31st, 2019. The data were analyzed through t-test, ANOVA, Pearson correlation coefficient and multiple regression with SPSS/WIN 22.0. The result showed self-esteem, loneliness on subjective well-being averaged 31.39(out of 40), 35.37(out of 80), 5.03(out of 7). In term of correlations, subjective well-being of middle-aged women was significantly positively correlated with self-esteem (r=.581, p<.001), and significantly negatively related with loneliness (r =-.621, p<.001)). Variables affecting subjective well-being were self-esteem (β=.324 p<.001), loneliness(β=-.424, p<.001). These variables represented 44.5% of the subject's subjective well-being. These results suggest that development of a intervention program is needed to lowers loneliness and increases self-esteem in order to increase the subjective well-being of middle-aged women.