• 디지털융복합연구
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• 제11권12호
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• pp.237-243
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• 2013

기업은 시작과 동시에 계속기업을 영위하면서 사회적 책임도 가지게 된다. 하지만 최근 기업의 평균수명이 점점 단축되고 있으며 기업환경 또한 급격하게 변화하고 있다. 따라서 본 연구에서는 글로벌 기업의 장수요인 분석을 통하여 기업의 장수, 즉 계속기업의 해답을 얻고자 하였다. 지멘스와 듀폰의 두 거대 글로벌기업의 장수요인을 분석해 본 결과 그 요인은 사업포트폴리오 변화, 위험관리, 지속적 연구개발, 신뢰경영, 친환경경영등의 요인이 설명되었다. 이는 지속적 내, 외부 환경 분석 및 핵심역량 강화를 통한 책임경영의 구현이 곧 장수경영의 핵심으로 나타나고 있다.

• 응용통계연구
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• 제28권4호
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• pp.703-719
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• 2015

본 논문은 평균회귀 2요인 사망률 모형에 코호트 효과를 반영한 개선된 확률론적 사망률 모형을 제시한다. 한국 남자의 사망률 자료를 바탕으로 가중평균최소제곱법과 메트로폴리스 알고리듬을 이용하여 사망률 모형을 추정한 결과 코호트 효과를 반영하는 것이 모형 적합도를 향상시킴을 발견하였다. 국민연금공단과 같은 연금사업자가 자신의 장수위험을 금융시장에 순차적으로 전가하는 수단으로서 옵션방식 이자지급 장수채권의 활용을 제안하고 발행채권의 가격 산출방법을 제시하는 것이 본 논문이 기여하는 점이다. 특히 생존지수에 의해 이자지급 현금흐름이 결정되는 장수채권 가격산출을 위하여 코호트 효과가 매우 중요한 요소임을 강조하였다.

• Journal of Animal Science and Technology
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• 제58권12호
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• pp.41.1-41.7
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• 2016

Background: Over two decades of observations in the field in South East Asia and Hawai'i suggest that majority of the commercial dairy herds are of black hair coat. Hence a simple study to determine the accuracy of the observation was conducted with two large dairy herds in Hawaii in the mid-1990s. Methods: A retrospective study on longevity of Holstein cattle in the tropics was conducted using DairyComp-305 lactation information coupled with phenotypic evaluation of hair coat color in two large dairy farms. Cows were classified into 3 groups: a) black (B, >90%); b) black/white (BW, 50:50) and c) white (W, >90%). Cows with other hair coat distribution were excluded from the study. In farm A, 211 out of 970 cows were identified having 4 or more lactations. In farm B, 690 out of 1,350 cows were identified with 2 or more lactations for the study. Results: The regression analyses and the Wilcoxon-Log-rank test for survival probability showed that Holstein cattle with 90% black hair coat had greater longevity compared to Holstein cattle with 90% white hair coat. Conclusions: This study suggests that longevity of Holstein cattle in tropical regions was influenced by hair coat color and characteristics.

• Asian-Australasian Journal of Animal Sciences
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• 제27권6호
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• pp.784-790
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• 2014

In this study we aimed to evaluate the reduction in dimensionality of 20 linear type traits and more final score in 14,943 Holstein cows in Brazil using factor analysis, and indicate their relationship with longevity and 305 d first lactation milk production. Low partial correlations (-0.19 to 0.38), the medium to high Kaiser sampling mean (0.79) and the significance of the Bartlett sphericity test (p<0.001), indicated correlations between type traits and the suitability of these data for a factor analysis, after the elimination of seven traits. Two factors had autovalues greater than one. The first included width and height of posterior udder, udder texture, udder cleft, loin strength, bone quality and final score. The second included stature, top line, chest width, body depth, fore udder attachment, angularity and final score. The linear regression of the factors on several measures of longevity and 305 d milk production showed that selection considering only the first factor should lead to improvements in longevity and 305 milk production.

• 사상체질의학회지
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• 제10권1호
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• pp.295-309
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• 1998

The purpose of this paper was to investigated to the relationship between longevity and Sasang Constitution. The investigation of this paper is composed of 4 parts. First part is investigated to the distribution of sex constitution and constitutional form. Second part is the distribution of the special of body quality(blood pressure, Pulse, Respiration, heredity, stool frequency) and the disease. Third part is the relation of the longevity reason(diet, alcohol intake, smoking). Fourth part is the relationship between the QSCC II and longevity reason. The results were as follows : 1. In case of a macrobian, Soyangin is much more in constitution. 2. A macrobian is generally short and thin. 3. About the macrobian's strength of heredity, there is no any meaningful conclusion, but more studying relationship between heredity and longevity is needed. 4. A macrobian has normal condition in blood pressure, pulse and feces condition. 5. In case of macrobian, the portion of a light eater, non-smoker, and abstainer is high, they like warm food. 6. A macrobian who is active and diligent has high accomplishment and good sociality. Considering above conclusion, a macrobian is related to Soyangin in characteristic of constitution. In the future, more studying is needed whether the macrobian has kept their lives with their unique preservation of health or not.

• Communications for Statistical Applications and Methods
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• 제26권6호
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• pp.557-573
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• 2019

Mortality study is an essential component of actuarial risk management for life insurance policies, annuities, and pension plans. Life expectancy has drastically increased over the last several decades; consequently, longevity risk associated with annuity products and pension systems has emerged as a crucial issue. Among the various aspects of mortality study, a consideration of the cause-of-death mortality can provide a more comprehensive understanding of the nature of mortality/longevity risk. In this case study, the cause-of-mortality data in Korea and the US were analyzed along with a multinomial logistic regression model that was constructed to quantify the impact of mortality reduction in a specific cause on actuarial values. The results of analyses imply that mortality improvement due to a specific cause should be carefully monitored and reflected in mortality/longevity risk management. It was also confirmed that multinomial logistic regression model is a useful tool for analyzing cause-of-death mortality for actuarial applications.

• Restorative Dentistry and Endodontics
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• 제18권2호
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• pp.501-506
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• 1993

The purpose of this study was to observe the longevity of amalgam and composite resin fillings in Korea. The number of placement of restorations was 760 amalgams and 415 composite resins. The amalgam restorations inserted because of primary caries were 61 % and replacement of amalgam restorations were 39%, and composite restorations inserted because of primary caries were 62 % and replacement of composite restorations were 38 %. The median longevity of failed amalgam restorations was 3 years and the madian longevity of failed composite restorations was 2 years. The main reason of replacement of amalgam and composite resin restorations was secondary caries.

• 동의생리병리학회지
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• 제17권4호
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• pp.893-897
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• 2003

We study the health tools for silver longevity on the theory of the material basis & vital and mental activities. The results are as follows. The navel herb-moxibustion tool strengthen material basis in the low elixir-field. The method is the fumigation of navel by the aroma of herb. The detailed micro-wave tool strengthen Ki(vital energy) in the middle elixir-field by the multi-method of the recognition-stimulation, micro-vibration, micro-current. The mystical pillow being composed of thirty two herbs strengthen mental activity in the upper elixir-field. The three methods are the synthetic, practical, familiar health tools for silver longevity.

• Molecules and Cells
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• 제45권11호
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• pp.763-770
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• 2022

Caenorhabditis elegans has been used as a major model organism to identify genetic factors that regulate organismal aging and longevity. Insulin/insulin-like growth factor 1 (IGF-1) signaling (IIS) regulates aging in many species, ranging from nematodes to humans. C. elegans is a nonpathogenic genetic nematode model, which has been extensively utilized to identify molecular and cellular components that function in organismal aging and longevity. Here, we review the recent progress in the role of IIS in aging and longevity, which involves direct regulation of protein and RNA homeostasis, stress resistance, metabolism and the activities of the endocrine system. We also discuss recently identified genetic factors that interact with canonical IIS components to regulate aging and health span in C. elegans. We expect this review to provide valuable insights into understanding animal aging, which could eventually help develop anti-aging drugs for humans.

• 한국보건교육건강증진학회:학술대회논문집
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• 한국보건교육건강증진학회 2007년도 추계학술대회 자료집
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• pp.55-55
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• 2007

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