• 대한치과보철학회지
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• 제57권3호
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• pp.280-287
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• 2019

구강이라는 특수한 환경 속에서 치아는 평생을 거쳐 마모, 부식 등을 겪게 된다. 점진적이며 일정한 치아의 마모는 노화의 자연스러운 현상이나, 특정 요소에 의한 마모나 부식 등은 병적인 요소이며 교합면의 병리적 손상과 이에 따른 교합 부조화, 심미적 문제, 턱관절 장애 등을 야기할 수 있다. 본 증례는 26세의 젊은 여성 환자로 전반적인 치아의 마모와 부식이 동반된 상태였다. 디지털 안모 분석, 생리적 안정위, 전치부 치관 길이 평가 등을 통해 진단 납형을 제작하였다. 디지털 분석을 통해 치관연장술에 필요한 가이드를 제작하여 수술을 진행하였고 임시 보철물을 통하여 저작 기능 및 심미성을 회복하였다. 지르코니아 최종 보철로 수복하여 심미적, 기능적으로 만족할만한 결과를 얻었으므로 이 증례를 보고하고자 한다.

• 보건행정학회지
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• 제28권4호
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• pp.378-391
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• 2018

Background: People who were born in different years, that is, different birth cohorts, grow in varying socio-historical and dynamic contexts, which result in differences in social dispositions and physical abilities. Methods: This study used age-period-cohort analysis method to establish explanatory models on healthcare expenditure in Korea reflecting birth cohort factor using intrinsic estimator. Based on these models, we tried to investigate the effects of ageing population on future healthcare expenditure through simulation by scenarios. Results: Coefficient of cohort effect was not as high as that of age effect, but greater than that of period effect. The cohort effect can be interpreted to show 'healthy ageing' phenomenon. Healthy ageing effect shows annual average decrease of -1.74% to 1.57% in healthcare expenditure. Controlling age, period, and birth cohort effects, pure demographic effect of population ageing due to increase in life expectancy shows annual average increase of 1.61%-1.80% in healthcare expenditure. Conclusion: First, since the influence of population factor itself on healthcare expenditure increase is not as big as expected. Second, 'healthy ageing effect' suggests that there is a need of paradigm shift to prevention centered-healthcare services. Third, forecasting of health expenditure needs to reflect social change factors by considering birth cohort effect.

• 문화기술의 융합
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• 제7권1호
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• pp.424-431
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• 2021

본 연구는 저출산·고령화, 만혼, 비혼, 별거, 사별, 귀농귀촌 등으로 인한 가족구조의 변화, 노동시장의 유연성 증대 등으로 인한 1인가구 증가라는 현상에 대해 1인가구의 화재예방 대책을 탐구하고 있다. 1인가구의 화재에 영향을 미치는 요인은 구조적 차원에서 주거환경문제가 있다. 행태적 측면에서 반려동물 양육에 따른 화재발생 증가가 있다. 1인가구의 화재예방을 위해서는 구조적 차원에서 주거환경 개선을 위한 예외 없는 안전규제가 필요하다. 행태적 차원에서는 관계기관 예방안전지도의 확대 적용이 필요하다. 또한 반려동물로 인한 화재 예방을 위한 조치로서 전기레인지의 제조사들은 반려동물로 인한 화재를 예방하는 안전장치, 예를 들면 자동 전원 차단장치나 타이머를 활용한 전원 공급 등을 개발해야 한다. 반려동물을 안전하게 키우기 위해 필요한 조치들을 홍보영상으로 만들어 배포하거나 가상현실로 구현된 재난대비 프로그램을 개발해서 보급하는 것도 중요한 수단이 될 수 있다.

• 한국산업융합학회 논문집
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• 제25권2_2호
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• pp.219-232
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• 2022

The aim of this study is to provide the dynamic convergence index that reflected the inherent characteristics of the convergence phenomenon and utilized the nationally-funded R&D projects data, thereby suggesting useful information about the direction of the national convergence R&D strategy. The dynamic convergence index that we suggested was made of two indicators: persistency and diversity. From a time-series perspective, the persistency index, which measures the degree of continuous convergence of multidisciplinary nationally-funded R&D projects, and the diversity index, which measures the degree of binding with heterogeneous research areas. We conducted the empirical experiment with 151,248 convergence R&D projects during the 2015~2021 time period. The results showed that convergence R&D projects in both public health and life sciences appeared the highest degree of persistency. It was presumed that the degree of persistency has increased again due to the COVID-19 pandemic. Meanwhile, the degree of diversity has risen with combining with disciplinary such as materials, chemical engineering, and brain science areas to solve social problems including mental health, depression, and aging. This study not only provides implications for improving the concept and definition of dynamic convergence in terms of persistency and diversity for national convergence R&D strategy but also presented dynamic convergence index and analysis methods that can be practically applied for directing public R&D programs.

• Asian Journal for Public Opinion Research
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• 제10권3호
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• pp.200-229
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• 2022

The purpose of this study is to analyze the effects of youth job policy measures, set forth in Korea's 2016-2020 Third Basic Plan for Low Fertility and Aging Society (December 2015), on marriage and fertility among young people. Based on the results, we provide theoretical explanations for the findings and suggest policy alternatives to overcome the low fertility phenomenon in Korea. Previous studies have shown that employment is an important factor for marriage among youth, and a job policy could increase marriage and fertility rates. To test this assumption, we performed an exact matching between Statistics Korea's Employee-Enterprise Linkage DB and the Newlyweds DB from 2011 to 2019, in order to identify all young people aged 15-34. Then, linear spline regression analysis was used to examine the impact of the youth job policy on marriage and fertility. Comparing the period before the implementation of the employment policy (2011-2015) and after (2016-2019), the fertility rate increased as the number of young people looking for work increased. In addition, it was found that these impacts were greater after the implementation of the measures (2016-2019) than before (2011-2015). It is interesting to note that job growth among young people did not lead to an increase in marriage. However, the number of births significantly increased when young people who occupy jobs got married, which seems to be related to the delay in marriage among young people who are employed. Survey results about the intentions to marry and views on fertility are utilized for the explanation of the study results.

• 산업융합연구
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• 제20권11호
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• pp.221-232
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• 2022

본 연구에서는 간호대학생이 인식하는 노인은 어떠한지 내용분석을 통해 확인하였다. 자료수집은 2022년 6월 27일부터 7월 15일까지 이루어졌으며, 전남지역에 있는 일 간호대학 4학년 중에서 연구 참여에 동의한 학생 65명을 대상으로 자료를 수집하고, 연구목적에 맞는 63개의 진술문을 분석하였다. 분석결과, 4개 범주로 구분하고, 10개의 주제와 45개의 하위주제로 분류되었다. 첫 번째 '노인을 바라보는 관점'범주에서는 부정적 시각, 긍정적 시각, 동정적 시각, 무관심 등의 4개 주제가 도출되었으며, 두 번째 '노화 과정' 범주에서는 1개의 주제인 노인 모습이 도출되었다. 세 번째 '사회 속에서의 노인' 범주에서는 현대사회에서의 노인, 사회적 현상, 노인의 권리 등 3개 주제가, 마지막으로 '노인과의 관계 개선'범주에서는 노인 이해하기, 자기성찰이라는 2개의 주제가 도출되었다. 본 연구의 결과는 간호대학생의 노인에 대한 이해를 돕고, 노인 인식 개선을 위한 기초자료로 사용될 수 있을 것이다.

• International Journal of Internet, Broadcasting and Communication
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• 제15권2호
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• pp.187-195
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• 2023

Sarcopenia is a phenomenon in which muscle function, including muscle strength, deteriorates as muscle mass decreases in the process of increasing age. The diagnosis of sarcopenia utilizes total muscle mass and limb muscle mass, and limb muscle mass is expressed as height squared, body weight, and BMI. Each divided value is used as an index, mainly less than 7.23 kg/m2 for men and less than 5.67 kg/m2 for women. Grip strength, standing up from a chair, and walking speed were mainly used as physical function factors, and grip strength less than 27 kg for men and less than 16 kg for women were used as indicators. The limb muscle mass showed a decreasing trend after peaking in the mid-20s in men, and maintaining a gradual peak in women from the mid-20s to the mid-40s, showing a more rapid decline in men. The rate of decrease in muscle mass and strength continues to increase after the age of 20, and muscle strength rapidly decreases after the age of 80. In Korean men, total muscle mass and limb muscle mass show a decreasing trend from the mid-30s, and a more markedly rapid decrease from the age of 60. For women, it remains constant from the age of 30 to the age of 50, then gradually decreases after the mid-50s, and shows a rather rapid decrease after the mid-70s, showing a more gradual decrease than that of men. Men show a sharp decrease from the mid-40s when limb muscle mass is divided by height squared, and women show a marked decrease after 70 years old when limb muscle mass is divided by height squared. Exercise for the prevention and treatment of sarcopenia results in an increase in protein assimilation hormone, an increase in antioxidant activity, a decrease in inflammation, an increase in muscle insulin sensitivity, and an increase in protein synthesis. Resistance exercise is basically used, and aerobic exercise and equilibrium A combination of exercises is effective. In addition, for a more efficient effect of sarcopenia through resistance exercise, it is necessary to supplement nutrition including protein.

• 대한토목학회논문집
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• 제42권2호
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• pp.219-227
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• 2022

우리나라는 고령화 현상이 가속됨에 따라 고령자 관련 교통사고 문제가 지속적으로 대두되고 있으며, 이를 개선하기 위한 노력은 시행 중이나 효과가 뚜렷하지 않다. 따라서 본 연구에서는 통행특성 및 인센티브 정책이 고령운전자의 운전면허증 반납에 미치는 영향을 검토하였다. 분석결과, 고령운전자의 주 구성원인 남성, 고 연령층, 낮은 대중교통 의존도, 긴 운전시간, 통행횟수가 많은 집단의 경우, 운전면허증 반납의사가 낮은 것으로 확인된다. 반면, 금전적 인센티브는 운전면허증 반납의사에 긍정적 역할을 하며, 이를 제공하는 방식에 따라 반납의사 정도에 차이가 존재하는 것으로 분석되었다. 다만, 운전면허 반납의사가 낮은 집단에서는 그 효과가 미미할 것으로 예측된다. 분석결과를 종합해보면, 현재의 정책 하에서는 고령운전자로 인한 사회적 문제를 개선하기에는 한계가 존재하는 것으로 예측되는 바 고령운전자의 운전면허증 반납 유도를 위한 접근방법에 대한 재검토가 필요하다.

• 한국농촌건축학회논문집
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• 제25권3호
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• pp.27-35
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• 2023

This study aims to provide implications for Korea's efficient application policies for closed schools by identifying the current status of how closed schools are revitalized in Japan and their supportive measures. In Japan, a total of 2,215 schools have closed from 1992 to 2001, and 8,580 schools from 2002 to 2020, with 10,709 closures occurring from 1992 to 2020. The average number is about 369 per year. In terms of the overall trend, the number of closed schools have been put into use and the numbers have increased from 70% in 2013 to 74% in 2020. To summarize the characteristics of the use, first, there is a complex phenomenon in which the use of closed schools are becoming more diverse. Second, closed schools are most often revitalized as educational facilities for residents, followed by social sports facilities, social education facilities and cultural facilities. Third, the use of closed schools in the industries are increasing as they are used as "corporal facilities and start-up support facilities". In order to promote the use of closed schools, the Ministry of Education, Culture, Sports, Science and Technology in Japan promoted the simplification and elasticity of property disposal procedures in 2008. Since 2010, the disclosure of information on closed facilities and matching service between providers and users have been unified through the "Let's Connect to the Future ~ Closed School for All" project. The Cabinet Office including the four offices, and five central governments are advocating the use of closed schools by promoting subsidy support projects.

• 열처리공학회지
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• 제37권3호
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• pp.121-127
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• 2024

We investigate the effect of T6 heat treatment on the microstructure and mechanical properties of AA365 (Al-10.3Si-0.37Mg-0.6Mn-0.11Fe, wt.%) alloy fabricated by vacuum-assisted high pressure die casting by means of thermodynamic calculation, X-ray diffraction, scanning and transmission electron microscopy, and tensile tests. The as-cast alloy consists of primary Al (with dendrite arm spacing of 10~15 ㎛), needle-like eutectic Si, and blocky α-AlFeMnSi phases. The solution treatment at 490 ℃ induces the spheroidization of eutectic Si and increase in the fraction of eutectic Si and α-AlFeMnSi phases. While as-cast alloy does not contain nano-sized precipitates, the T6-treated alloy contains fine β' and β' precipitates less than 20 nm that formed during aging at 190℃. T6 heat treatment improves the yield strength from 165 to 186 MPa due to the strengthening effect of β' and β' precipitates. However, the β' and β' precipitates reduce the strain hardening rate and accelerate the necking phenomenon, degrading the tensile strength (from 290 to 244 MPa) and fracture elongation (from 6.6 to 5.0%). Fractography reveals that the coarse α-AlFeMnSi and eutectic Si phases act as crack sites in both the as-cast and T6 treated alloys.