• Journal of Digital Convergence
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• v.14 no.9
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• pp.63-72
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• 2016

Given that the number of people with developmental disabilities is continuously increasing in Korea, we need to pay attention to the lives of parents who rear the children with developmental disabilities. Accordingly, this study examined the effects of parenting stress on the quality of life in parents of children with developmental disabilities, and moderating effects of information application in the process. This study conducted a survey to 194 parents who rear such children in Chungnam and Chungbuk provinces. This study utilized PASW Statistics 18.0 for analysis, and the study results are as follows. First, it was found that parenting stress was more than average level, and information application was somewhat lower than average level. Quality of life was found to be lower than average level, and the level of relationship with neighborhood and emotional condition was relatively lower than other sub-factors. Second, influential factors of life quality were parenting stress, disability degree, information application, residential area, and disability type. Third, information application was found to have moderating effects on the relationship between parenting stress and quality of life. Based on such empirical analysis results, this study suggested concrete and comprehensive working strategies to improve quality of life in parents of children with developmental disabilities.

• Journal of Embryo Transfer
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• v.30 no.3
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• pp.149-159
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• 2015

This study was designed to know the possibility in repeat uses of elite donor cows for getting mass production of OPU-derived embryo production (OPU-IVP). Ultrasound transvaginal ovum pick-up (OPU) performed in 6 Korean native cows was aged 4 to 10 years old. The aspiration of immature oocytes for OPU derived embryo was carried out 2 times per week, and OPU-IVP of $1^{st}$ period was carried out 22~48 sessions from each donors. And the break time for OPU-IVP of $2^{nd}$ period after $1^{st}$ OPU from each donors were 2~25 months. The OPU-IVP of $2^{nd}$ period each donors conducted total 15~65 times for 2~8 months by an ultrasonographic, was guided follicular aspiration system. The average numbers of collected oocytes, grade 1 + grade 2(G1+G2) oocytes and cleavage embryo from $1^{st}$ period OPU-IVP were significantly differences between donors (p<0.05). Total collected oocytes of donor D were significantly higher compared with donors of A, B, C, E and F (average 17.0 per session vs. 11.2, 10.1, 8.5, 10.2 and 9.6; p<0.05) and also oocytes of G1+G2 were significantly higher compared with r A and D and subsequently to donors of B, C, E and F (average 7.9 and 8.5 per session vs. 5.0, 2.7, 6.0 and 1.6; p<0.05). Cleavage rate of donor D was significantly higher compared with donors of A, B, C, E and F (average 13.1 per session vs. 10.1, 9.1, 6.9, 8.9 and 6.7; p<0.05). The average numbers of OPU-IVP for $1^{st}$ period was significantly higher from donors of B, D and E than those from donors of A, C and F (average 6.5, 7.1 and 6.5 per session vs. 3.5, 4.2 and 2.8; p<0.05). The possibility investigation of $2^{nd}$ OPU-IVP was carried out after 2~25 months rest periods from $1^{st}$ period OPU session. Total average numbers of collected oocytes, cleavages and blastocyst development rates were significantly higher from $1^{st}$ period OPU compared with $2^{nd}$ period one (p<0.05). The OPU-IVP efficiency by break for more embryo production from elite cow was analysis comparing without rest of donor A, under 6 months rest period as B and over 6 months rest period as C and then the average numbers of collected oocytes, cleavages and blastocysts were significantly higher from A group (11.8, 9.5 and 5.2 per session) than those from B and C groups (7.9, 6.2 and 2.6 vs. 9.2, 7.5 and 3.9, p<0.05), and also C group was significantly higher than B group. In conclusion, $1^{st}$ period OPU-IVP was more efficient compared with $2^{nd}$ period repeated uses of donor, and the break times for additional production of embryo on donor were needed more than over 6 months after $1^{st}$ period OPU-IVP. This repeating uses of elite donor cows given more emphasis for getting the opportunity on mass production of elite cow OPU-IVP embryo should be increased G1+G2 possibility of genetic improvement of livestock within short period.

• Journal of agriculture & life science
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• v.53 no.2
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• pp.121-129
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• 2019

This study carried out to determine control factors for the improvement of productivity of laying hens suffering heat stress during hot weather. A total of 48,451 ISA Brown layers were housed in a farm located in Gyeongsangnam-do, Republic of Korea. Five thermo-hydrometer loggers were installed inside the house to collect data of dry-bulb temperature and relative humidity. The experiment continued for 81 days when the summer season begins from 19th June to 7th September, 2018. This study analyzed the correlations among layers' production index and daily average, highest, and lowest temperature; daily average, highest, and lowest relative humidity; and daily average, minimum, and maximum THI. The result indicated that feed consumption, hen-day egg production, egg weight, and FCR decreased as the daily average, highest and lowest dry-bulb temperature and THI rise (p<0.01). On the other hand, water intake increased as the daily average, highest and lowest dry-bulb temperature and THI rise (p<0.001). The relative humidity was not considered to have direct correlations to the layers' production index (p>0.05). However, it was noticeable that the mortality did not have significant relations with daily average and highest temperature; THI; or daily average, highest and lowest relative humidity while it was relevant to the daily lowest temperature and THI (p<0.05). In conclusion, to enhance the productivity of laying hens in a hot climate, it is recommended that daily average, highest, and lowest dry-bulb temperature and THI are maintained as low as possible. Especially, the daily lowest temperature is needed to lower to 20℃, which is the lowest critical temperature for layers.

• The Journal of Korean Academic Society of Nursing Education
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• v.19 no.3
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• pp.423-432
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• 2013

Purpose: The purpose of this study was to identify the factors influencing college life adjustment in nursing students. Methods: The subjects consisted of 206 nursing students. Data were collected from December 6 to December 13, 2012. Data analysis was done using descriptive statistics, t-test, ANOVA, Pearson's correlational coefficients and multiple regression with SPSS WIN v 20.0. Result: The mean scores of ego-identity ($3.53{\pm}48$), social problem-solving ability ($3.41{\pm}.42$), and college life adjustment ($5.27{\pm}.91$) were above average. College life adjustment was significantly different according to ego-identity, academic performance, and perceived health state. Ego-identity, academic performance, and perceived health state were influencing factors of college life adjustment (53.2%). Conclusion: It is necessary to develop an education program to improve ego-identity, academic performance, and perceived health state to help nursing students to adjust to their college life more effectively.

• Child Health Nursing Research
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• v.23 no.3
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• pp.312-318
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• 2017

Purpose: In this study factors affecting quality of life in mothers who have children with precocious puberty were identified. Methods: The participants were 102 mothers of children with precocious puberty. From September 12 to September 30, 2016, data were collected using a structured questionnaire and analyzed using SPSS/WIN 22.0. Results: Regression analysis showed that the model's explanatory power was 45%(F=28.71, p<.001). Role stress (t=-4.83, p<.001), objective burden (t=-2.71, p<.001), and average monthly income (t=4.12, p<.001) were factors affecting quality of life among these mothers. The most influential factor was role stress (${\beta}=-.41$), which showed a negative correlation. Conclusion: Role stress and objective burden were major factors that decreased the quality of life in these. The findings indicate that effective strategy programs for reducing role stress and objective burden are necessary to improve the quality of life in mothers of children with precocious puberty.

• Journal of the Korean Society of Safety
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• v.27 no.4
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• pp.115-120
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• 2012

In order to establish preventive maintenance standards through analysis & reliability prediction of about 60,000pcs of 20kindsof relays and contractors used for Seoul subway trains, several life prediction methodologies were applied. Firstly, Occurrence, Severity, Detection were defined and predicted by applying operation characteristic of EMU to the number of actions of relays & contactors which the manufacturers generally offer as the life cycle data. Secondly, failure distribution and average life of parts were analyzed through interpretation of field data based on a lot of experience which had built up in the field for a long time. Finally, using the 217PLUS standard as a reliability prediction program, comparative analysis of use reliability and inherent reliability was done through reliability prediction at the part level and system level.

• Journal of Families and Better Life
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• v.11 no.1
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• pp.218-234
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• 1993

A study focused on the wives'managerial behavior and their life satisfaction according to wives'stress level ad their coping behavior. The statistical procedures used were percentile mean cronbach's a T-test F-test cluster analysis. Duncan's Multiple Range test. For the purpose the sample were conducted using questionnairs on 548 housewives that lived in seoul. The major findings wee ; 1) The wives's education level of background variables significantly was differentiated from wives' managerial behavior and their life satisfaction respectively. 2) The wives'stress level and their coping behavior respectively was higher than average. from wives'managerial behavior respectively. 4) The variable i.e. wives'stress level wives'coping behavior significantly was differentiate from wives'life satisfaction respectively In conclusion to improve wives'managerial behavior and their life satisfaction this study suggests we have to try to release or decrease wives'stress level and to do the resonable wives'co-ping behavior.

• Journal of Family Resource Management and Policy Review
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• v.1 no.1
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• pp.27-42
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• 1997

The purpose of this study is to analyze consumption expenditure patterns over family life cycle. The data used in the study is the 1994 Survey data from Annual Report on the Family Income and Expenditure Survey. The study sample included 26,980 salary and wage earners’ households living in cities. The family life cycle was classified into six stages and items of expenditure were classified into 12 categories. Frequency distribution, mean, one-way ANOVA, Scheff test, and regression analysis were used to analyze the data. The major findings of this study are as follows : First, the average consumption propensity differs among family life cycle. Second, the amount and budget share of consumption expenditure for each expenditure category differ significantly among family life cycle in all expenditure categories. Third, family life cycle is found to be a significant factor on expenditure of food and education, and also on budget share of education.

• Journal of Families and Better Life
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• v.2 no.1
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• pp.57-66
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• 1984

This study examines differences in the household saving show significant differences according to the specific stage of family life cycle. 337 housewives in Taegu were interviewed by questionnaire. Analysing method employed are frequency, percentage and Chisquare test. Findings are as follows; 1) The average ratios of household saving show significant differences according to the specific stage of family life cycle. 2) Purposed of household savings had significant differences at each stage of the family life cycle. 3) Selections of financial goods did not have significant differences according to the sage of family life cycle . 4) Selections of financial goods had significant difference according to the purposed of household savings.

• Parasites, Hosts and Diseases
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• v.36 no.2
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• pp.91-98
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• 1998

The present study was performed to observe characteristics of the lifE history of Echinoparvphium recunpatum under both natural and laboratory conditions in Korea. A batch of Rcnix aunculnria corecna was collected from Sunamchon, one of the stream of West Naktonggang (River), in Kangso-gu, Pusan during August and September 1992. Out of 106 snails examined by crushing,52 (49.0%) were infected with larval E. recurvaum i.e. rediae, cercariae and metacercariae. Cercariae naturally shed from snails encysted in the snails of same species and loaches, but not in mud-snails. Adult worms were detected from chicks and ducks experimentally infected with metacercariae, but not from rats and mice. The average recovery rate of adults from chicks was 13.1%. Rediae were sac-like, $2.437{\;}{\times}{\;}0.317{\;}mm$ in average size, with a muscular pharynx and a brownish cecum which reached the anterior half of the body. Cercariae consisted of a spindle-shaped body ($0.262{\;}{\times}{\;}0.129{\;}mm$ in average) and a rod-like tail ($0.528{\;}{\times}{\;}0.056{\;}mm$ in average). In the cercarial body, 45 collar spines were observed on the head crown, and double rows of excretory ducts with fine granules were laterally arranged between the pharynnx and the ventral sucker. Metacercariae were spherical, $0.144{\;}{\times}{\;}0.142{\;}mm in average size, with thick hyaline outer and thin elastic inner walls, and many excretory granules. Adults were slender and more attenuated in the anterior end, $0.2760{\;}{\times}{\;}0.550{\;}mm$ in average size, and had 45 collar spines including four end group spines on both ventral corners. From the above results, it was confirmed that R. auriculnna corennc plays a pivotal role in the life cycle of 5. recuwatum as the first and/or second intermediate hosts in Korea.