• Title/Summary/Keyword: Life table

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Effect of Polyphenol Oxidase Activity and Total Phenolic Content on Browning and Quality of Dried-Persimmon According to Maturity Degree of Astringent Persimmon

  • Jung, Kyung-Mi;Song, In-Gyu;Kim, Se-Jong;Lee, Sang-Han
    • Current Research on Agriculture and Life Sciences
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    • v.33 no.2
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    • pp.65-68
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    • 2015
  • Hunter's color value "a" in dried-persimmon of table and full ripe fruit was higher than that in unripe fruit. In case of soluble solid content, full ripe fruit was $50^{\circ}Brix$, the highest degree, while unripe fruit was $40^{\circ}Brix$, the lowest degree. PPO activation of unripe fruit was 4.7, which was higher than table-ripe fruit (0.7) and full ripe (1.0). Polyphenol oxidase activation remained even while drying, but there was no difference in PPO activation degree as drying period increased. Total phenol content of unripe fruit was 101.4, which was higher than table-ripe fruit (57.5) and full ripe fruit (67.4). Total phenol content level increased as drying period increased, which was based on fresh weight. Hardness of unripe and table ripe fruit continued to decrease until three weeks during softening. After that, hardness was high and it started drying. However, in full ripe fruit, hardness increased after two weeks and softening was fast during the drying period, and its weight reduction rate was lower than that of unripe and table ripe fruit.

Activation and Onset Time of the Gluteus Maximus Muscle during Three Different Prone Table Hip Extension Exercises

  • Jeon, In-Cheol
    • The Journal of Korean Physical Therapy
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    • v.32 no.5
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    • pp.295-301
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    • 2020
  • Purpose: The purpose of this study was to compare the electromyographic activity and onset time of the gluteus maximus (GM) and hamstring (HAM), lumbopelvic kinematics during three different prone table hip extension exercises in healthy individuals. Methods: Twenty subjects were participated. Electromyography device was used to measure the muscle activities and onset time of the GM and HAM muscles. An electromagnetic tracking motion device was used to measure lumbopelvic compensations. The subjects were asked to perform three different prone table hip extension [Prone table hip extension with the abdominal drawing-in maneuver on a chair (PTHEA), PTHEA with the ipsilateral knee flexion (PTHEAF), PTHEAF with hip 30 abduction (PTHEAFA)]. One-way repeated measures analysis of the variance and a Bonferroni post hoc test were used. Results: The electromyographic activity and onset time were significantly different among three conditions (PTHEA vs. PTHEAF vs. PTHEAFA)(p<0.01). The GM muscle activity and onset time were significantly greater and reduced during the PTHEAFA compared to PTHEA and PTHEAF (p<0.01). However, The HAM muscle activity and onset time were significantly smaller and delayed during the PTHEAFA compared to PTHEA and PTHEAF (p<0.01). Conclusions: PTHEAFA exercise can be recommended to facilitate the muscle activity and efficient muscle firing time of GM without HAM dominance.

Quality Changes of Table Grapes to Packaging Methods (포장재가 저장포도의 품질변화에 미치는 영향)

  • Park, Hyung-Woo;Kim, Yoon-Ho;Choi, Jeong-Hee;Kim, Dong-Man;Park, Jong-Dae
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.13 no.3_4
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    • pp.103-105
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    • 2007
  • The effects of packaging conditions on the freshness extension of table grapes were investigated during storage for 14 days at $25^{\circ}C$ The storage life of tables grapes was influenced by both packaging methods (corrugated cardboard and MA film with box) during storage. The fresh weight, vitamin C content, reduced sugar and titratable acidity of table grapes decreased during storage. The change of vitamin C content and acidity was influenced by both packaging methods during storage. The quality of table grapes packed with 20CE, 20LD film was better than the other packaging methods.

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Asymptotic Normality of PL estimator for interval censored bivariate life-times

  • Kang, Shin-Soo
    • Communications for Statistical Applications and Methods
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    • v.7 no.1
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    • pp.245-256
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    • 2000
  • Large sample properties of Life-Table estimator are discussed for interval censored bivariate survival data. We restrict out attention to the situation where response times within pairs are not distinguishable and the univariate survival distribution is the same for any individual within any pair.

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Study of Community Classification Camellia japonica Forest in the Korean Peninsula (한반도 동백나무(Camellia japonica)림에 대한 군락분류)

  • Jin Young-Kue;Kim In-Taek
    • Journal of Life Science
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    • v.15 no.5 s.72
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    • pp.767-771
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    • 2005
  • The Camellia japonica vegetation in the Korean Peninsula was investigated by the methology of the Z-M school. The synthesis table of Camellion japonicae were arranged for association classification from 263 quadrats. The vegetation of Camellia japonica forest, classfied as an alliance includes nine new associations : Camellietum japonicae typicum Jin et Kim 2005, Machilo thunbergii-Camellietum japonicae Jin et Kim 2005, Pino thunbergii-Camellietum japonicae Jin et Kim 2005, Castanopo cuspidatae var. sieboldii-Camellietum japonicae Jin et Kim 2005, Lito japonicae-Camellietum japonicae Jin et Kim 2005, Castnnopo cuspidatae var. thunbergii-Camellietum japonicae Jin et Kim 2005, Querco acutae-Camellietum japonicae Jin et Kim 2005, Neolito sericae-Camellietum japonicae Jin et Kim 2005, Cinnamomo japonicae-Camellietum Japonirae Jin et Kim 2005.

Family Meal Time and Life Satisfaction of Fathers with a Child Younger than 18 Years Old (18세 이하 자녀를 둔 아버지의 가족식사시간과 생활만족도)

  • Kim, Soyoung
    • Human Ecology Research
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    • v.55 no.5
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    • pp.465-480
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    • 2017
  • This study examined the relationship between family meal time and emotional well-being for 5,186 fathers who were employed and had at least one child aged under 18 for the years 2009 and 2014 by analyzing their time diaries. In doing so, changes in time spent by fathers on family meals between 2009 and 2014 were also examined along with the factors associated with the amount of meal time for each year in order to understand ways to increase paternal participation in family meals. Analytic results showed that a father's family meal time had a positive association with his time use and life satisfaction; however, fathers who spent more than 40 minutes a day having meals with the family reported the highest score in time use and life satisfaction. The amount of time fathers spent on family meals increased from 38 minutes in 2009 to 43 minutes in 2014, whose change turned out to be mainly attributable to something more than the compositional change in the population between the two years, such as growing public awareness or cultural acceptance of the value of family meal. Fathers in dual-earner households tend to have longer family meal times; however, different factors were associated with their family meal times in 2009 and 2014. Policy implications are discussed in light of the government-initiated dining table education campaign to increase family meal time for the sake of children's character education at home.

Life table method of survival analysis using the automobile production period (Life table method을 이용한 자동차 생산기간의 생존분석)

  • Kim, Sung-Je;Cho, Jai-Rip
    • Proceedings of the Safety Management and Science Conference
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    • 2009.04a
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    • pp.531-539
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    • 2009
  • The environment of automobile industry in the world is rapidly changing. It is changing of high oil price, technology, environment and construction of competition by newly rising an economic district. Automobile company is focusing on three issue because they want to reinforce competition of automobile industry in the world. That is innovation of production profit management through quality management and Lean. Chance of success is separated in R&D, providing distribution, manufacture, distribution, selling in automobile industry. Emphasis on development process, distribution process, manufacture process, circulation and selling process for strengthening the competitiveness and guarantee. In this thesis, we try to analysis the data set period of automobile production by using survival analysis. While using mean comparison of general statistics commit mistakes, survival analysis can used for including censored data in order to heighten analysis efficiency.

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Survival Probability of the Patients with Cerebral Vascular Disease Who Visited an Oriental Hospital (모 한방병원에 내원한 뇌혈관 질환자들의 예후)

  • 김지용;서운교
    • The Journal of Korean Medicine
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    • v.23 no.4
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    • pp.91-97
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    • 2002
  • Objective: This study was conducted to know the survival probability of the patients with cerebrovascular disease. Method: 1,341 patients who were suspected of having cerebrovascular disease clinically were investigated by telephone and NHIC (National Health Insurance Corporation) data. Conclusion: 1. The study population was grouped as 'Negative Brain CT findings' (11.8%), 'Hemorrhage' (12.4%) and 'Infarction' (75.7%). 2. The survival probabilities calculated by the Life Table method were statistically significant among brain CT finding groups (P<0.01). 3. The mean survival time calculated by the Kaplan-Meier method were also statistically significant among brain CT finding groups (P<0.01). 4. The result of Cox regression model was that sex (OR=0.7), age (OR=1.07), diabetes mellitus (OR=1.38), and heart disease (OR=1.69) affected the survival of the patients with cerebrovascular disease.

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Life Table Statistics of the Rice Weevil, Sitophilus oryzae(L.)(Coleoptera: Curculionidae) on the Degree-Day Scale (온일도를 시간단위로 한 쌀바구미 생명표 통계량)

  • 류문일;조기종;유춘권
    • Korean journal of applied entomology
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    • v.27 no.1
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    • pp.14-20
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    • 1988
  • 쌀바구미 생명표 통계량을 정온 조건과 실온 조건에서 산출하였다. 온일도를 단위로 하였을 때 $20^{\circ}$~ $30^{\circ}$ 범위내 정온 조건에서의 통계량은 실온 조건에서의 통계량과 유사한 차이를 보이지 않았으며 온도간의 변이는 실온에서의 간 변이와 유사하였다. 이 결과는 온일도를 시간단위로 할 때 쌀바구미의 생화사가 표준화 될 수 있음을 시사하는 것이었다. 쌀바구미는 $368pm$41.2DD에서 산란을 시작하여 $1391.0\pm$38.7DD에서 멈추는 것으로 추정되었다. 외적 자연회가졸 밀도 음가 기간과 평균세대 기간은 각각$ 0.0052\pm$0.0006/DD, $134.7\pm$15.0 DD 그리고 $715.2\pm$53.6 DD인 것으로 산출되었다.

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