• Journal of the Korean Data and Information Science Society
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• v.27 no.3
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• pp.773-789
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• 2016

This study was conducted to identify the sleep patterns and influencing factors of hospitalized elderly in a long-term care hospital. The sleep patterns of 142 subjects were recorded using Sleep Charts. The average sleep time of subjects was 10.7 hours a day (3.9 hours in daytime and 6.8 hours in nighttime). Sleep regularity among participants were 71.7% in all day (58.1% in day time and 80.5% in night time). The presence of dementia patients in the room (PDPR) has been identified to be a statistically significant predictor of all day sleep, and pain, PDPR, and physical function have been found to be a significant predictors of sleep regularity in all day among subjects. It suggested that elderly patients in a long-term care hospital do not slept well during night, which leads to increase in daytime sleep and decrease the quality of their sleep. Therefore, an intervention program should be developed to promote the quality of sleep among hospitalized elderly.

• Development and Reproduction
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• v.23 no.2
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• pp.101-110
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• 2019

Melatonin is a pineal hormone that is synthesized and released at night under the light and dark cycles of a day. Its effects on the reproductive activities have well been established by the administration through various routes in photoperiodic animals. It was also identified in plants and named phytomelatonin. The capacity of the phytomelatonin was investigated in this investigation whether it affects the reproductive function in male golden hamster. As expected, animals housed in long photoperiod (long photoperiod, LP>12.5 hours of lights in a day) had large testes and animals kept in short photoperiod ($$SP{\leq_-}12.5$$ hours of lights in a day) showed remarkably reduced testes. The dietary supplement with melatonin itself induced the complete involution of testes. Pistachios that were reported to contain a large amount of melatonin demonstrated no effects at all in male golden hamsters. These results suggest that dietary supplement containing melatonin-rich foodstuff used in this investigation may not be enough to affect the reproductive endocrine system in male golden hamsters.

• International conference on construction engineering and project management
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• 2022.06a
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• pp.179-187
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• 2022

The project performances can be measured in terms of meeting the project schedule, budget, and conformance to functional and technical specifications. Numerous studies have been conducted to examine the causes and effects of change orders for both vertical and horizontal construction, respectively. However, these studies mainly focus on a single project type, so this paper examines the impact of change order for cost growth and schedule overruns using four different building types to close the gap in the change order research area. A total of 211 building projects are collected from four building types: healthcare, residential, office, and education. Statistical analyses using ANOVA tests and linear regression models are used to examine the created metric $CO/day on the cost and schedule impacts. The results found that mean $CO/day values were not statistically different among building types, and that the sum of change orders is a statistically significant predictor of $CO/day. The results will help project stakeholders mitigate the negative change orders effects can be a challenge for project managers and researchers alike.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.1 no.1
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• pp.41-46
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• 2003

To understand the long-term leach behavior of a borosilicate Waste glass in a repository, the leaching experiment with three kinds of simulated borosilicate waste glasses has been carried out since the middle of 1997. The five years results indicate that a boron would be applied as an indicator of a long-term leaching of their borosilicate waste glasses and that their long-term leach rates have a tendency to be close to about 0.03g/$m^2$-day even though their compositions and their ratios of the surface area to the volume of leachate are different.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7463-7473
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• 2015

This study aims to analyze the effect of long-term care utilization on health care utilization of the national health insurance elderly. This study is a secondary data analysis of the long-term care insurance data that comprised of total 21,213 long-term care insurance with the level 1 elders who received either service or non-service. This study evaluated the impact of long-term care service on the probability of health care utilization experience and costs of health care utilization. The total medical cost, geriatric hospital's medical cost, inpatient day and geriatric hospital's inpatient day by 2007-2009 were significant factor influencing the long-term care utilization. This study suggests long term care system should proper medical service linkage system. The current long-term care insurance system should more resource allocation on long-term care utilization to increase the efficiency of insurance system.

• The Bulletin of The Korean Astronomical Society
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• v.44 no.1
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• pp.52.3-52.3
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• 2019

We investigate a relative contribution from short to long-term flaring rate to predicting M and X-class flare probabilities. In this study, we consider magnetic parameters summarizing distribution and non-potentiality by Solar Dynamics Observatory/Helioseimic and Magnetic Imager and flare list by Geostationary Operational Environmental Satellites. A short-term rate is the number of major flares that occurred in an given active region (AR) within one day before the prediction time. A mid-term rate is a mean flaring rate from the AR appearance day to one day before the prediction time. A long-term rate is a rate determined from a relationship between magnetic parameter values of ARs and their flaring rates from 2010 May to 2015 April. In our model, the predicted rate is given by the combination of weighted three rates satisfying that their sum of the weights is 1. We calculate Brier skill scores (BSSs) for investigating weights of three terms giving the best prediction performance using ARs from 2015 April to 2018 April. The BSS (0.22) of the model with only long-term is higher than that with only short-term or mid-term. When short or mid-term are considered additionally, the BSSs are improved. Our model has the best performance (BSS = 0.29) when all three terms are considered, and their relative contribution from short to long-term rate are 19%, 23%, and 58%, respectively. This model seems to be more effective when predicting active solar ARs having several major flares.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6746-6755
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• 2014

This study examined the effect of long-term care utilization on the health care utilization of Medicaid elderly. The subjects were 5,834 long-term care insurance with the level 1 Medicaid elders, who received either service or non-service. This study examined the impact of long-term care service on the probability of health care utilization and the costs of health care utilization. The total medical cost and inpatient day between 2009-2007 were significant factors affecting long-term care utilization (${\beta}=.29$, p< .001, ${\beta}=.33$, p< .001 ) and this variable explained 22.6% of the total medical cost and 22.4% of the inpatient day. The results showed that non-service in long-term care was associated with an increase in health care utilization. The current long-term care insurance system should place higher priority and more resource allocation on long-term care utilization to increase the efficiency of the insurance system.

• Asian-Australasian Journal of Animal Sciences
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• v.5 no.3
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• pp.527-532
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• 1992

The present paper describes temporal changes of immunohistochemical localization and quantities of carbonic anhydrase isozyme II (CA-II) prochymosin (PC) and pepsinogen (PN) in goat's abomasal mucosae during long term milk feeding. The CA-II was not detected by day 14 after birth and then became positive on day 34 in the parietal cells, suggesting that the excretion of the hydrochloric acid (HCl) begins between days 14 and 34 under a feeding condition without solid materials. The quantity of the PC in the gastric chief cells detected by the ELISA showed rapid increase from the day of birth, making a peak on day 8 and then gradually decreased with age. The decrease in quantity of PC became started during the time period when HCl excretion had not started yet. The quantities of PN in the gastric chief cells were almost stable during the whole period examined. Expressions of these gastric enzymes did not seem to be regulated by the change of feeding condition.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.51 no.1
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• pp.41-47
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• 2006

To understand the heading habit of recently developed 20 Korean rice cultivars, rice plants in a phytotron were exposed to different temperature: $22.5^{\circ}C(day\;27^{\circ}C/night\;18^{\circ}C),\;27.5^{\circ}C(day\;32^{\circ}C/night\;23^{\circ}C)$, and day-length conditions: 10, 12, 13, 14, 15 hours. Four rice cultivars (Sobibyeo, Juanbyeo, Ilpumbyeo and Shindongjinbyeo) showed relatively short Basic Vegetative Phase (BVP) of 17 to 18 days, while Dasanbyeo showed the longest (35 days) BVP, compared to other remaining 15 tested cultivars which exhibited 24 to 31 days of BVP. In this experiment, it was tried out to separate the eliminable vegetative phase into photosensitivity and thermo-sensitivity with two different pathways. Many tested cultivars, however, exhibited quite different responses under low temperature and / or long day-length conditions. Especially, Surabyeo and Juanbyeo were the most difficult cultivars to separate into photo- or thermo-sensitivity in that the eliminable vegetative phase of these two cultivars increased greatly only under low temperature $(22.5^{\circ}C)$ and long day-length (15 hr.) conditions. Regarding the heading response to temperatures, tested cultivars could be categorized into 2 groups. In 1st group of rice cultivars, the eliminable vegetative phase decreased almost equally as the temperature changed from $20.0^{\circ}C\rightarrow22.5^{\circ}C\rightarrow25.0^{\circ}C\rightarrow27.5^{\circ}C$. In contrast, the 2nd group of rice cultivars exhibited eliminable vegetative phase slowly decreasing when the temperature changed from $22.5^{\circ}C\rightarrow25.0^{\circ}C\rightarrow27.5^{\circ}C$, but rapidly decreasing when the mean temperature changed from $20.0^{\circ}C\;to\;22.5^{\circ}C$. All the cultivars belonged to 2nd group, the heading date would be very delayed if cool summer comes.

• Magazine of the Korean Society of Agricultural Engineers
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• v.37 no.E
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• pp.72-78
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• 1995

To support some knowledge in planning irrigation system, short or long-term irrigation scheduling or determining irrigation reservoir capacity, it is necessary to estimate peak irrigation requirements and seasonal distribution of water demands for various return periods. In this paper Dry Day Index and Probable Evapotranspiration were evaluated to decide seasonal consumptive use of paddy rice for a design year using several decades' daily rainfall data and 5 years'('82~'86) actual evapotranspiration data, respectively. To obtain Dry Day Index that is defined as the number of probable dry days for a given period, Slade unsymmetrical distribution function was adopted. Dry Day Index was analysed for 5 and 10-day intervals. Each of them was evaluated with return periods of 1, 3, 5, 10 and 20 year. Their singnificance was tested by X$^2$ method. Based on these values, the Probable Evaportanspiration, that is the average daily ET both in dry days and rainy days during a given period, was estimated. Crop coefficient was also determined by the modified Penman equation proposed by Doorenbos & Pruitt.