한중 50대와 20대의 소비가치 비교연구를 통한 제품 및 서비스 콘텐츠 개발 방향 탐색

권준현(Junhyun Kwon),한세미(Semi Han),김숙응(Sook-Eung Kim),김은혜(Eunhye Kim) 한국콘텐츠학회 2018 한국콘텐츠학회논문지 Vol.18 No.12

전세계적인 고령화 현상 및 베이비붐세대의 고령층 진입에 따라 시니어 대상 비즈니스에 대한 관심과 기대가 증가하고 있다. 그럼에도 불구하고 수요층에 대한 이해 부족 및 한정적인 내수시장 규모 등 때문에 국내 관련 산업의 성장이 더디게 이루어지고 있다. 이의 활성화를 위해서는 국내 및 해외 시니어에 대한 이해 제고와 이를 기반으로 한 제품 및 서비스 콘텐츠 전략 제시가 필요하다. 이에 따라 본 연구는 소비가치 개념을 적용하여 연령대(20대 vs. 50대) 및 국가간(한국 vs. 중국) 행동을 탐색함으로써, 각 집단이 중요하게 인식하는 소비가치를 베이비붐세대이자 예비시니어층인 50대 소비자를 중점으로 비교분석하고 이들을 위한 제품 및 서비스 콘텐츠 개발 방향을 제안하였다. 연령 및 국가간 소비가치 비교분석을 위하여 설문을 진행하였으며, 설문문항은 12개 소비가치의 하위차원인 총 40개의 문항으로 구성되었다. 분석결과를 통해 예비시니어층인 50대에 대한 이해 제고가 가능하며 이는 타겟에 적절한 콘텐츠 기획, 개발, 유통, 홍보등의 전략 구축에 활용될 수 있다. Senior business has been paid attention due to rapid global aging and baby boomers turning 60. However, senior business is not successful as expected because of a lack of understanding of consumers and small size of Korean domestic market. Understanding of senior consumers and overseas markets and providing attractive product and service contents needs to overcome the current challenges. Therefore, this study explores and compares consumers of different generation and different countries. We employ consumption value theory and analyze which consumption values are perceived strongly by each four group(Korean consumers in their 20s, Korean their consumers in 50s, Chinese consumers in their 20s, and Chinese consumers in their 50s). We conducted online survey to compare consumption values among samples of consumers in two countries: Korea and China. There are forty survey instruments in twelve consumption values. The results can be used to develop a strategy for planning, developing, distributing, and promoting product and service contents which consumers, in particular baby boomers, have a strong intention to purchase it.

멀티스케일 모델링을 이용한 압력용기강의 조사손상 정량예측

이경근,권준현,Lee, Gyeong-Geun,Kwon, Junhyun 한국압력기기공학회 2014 한국압력기기공학회 논문집 Vol.10 No.1

In this work, an integrated model including molecular dynamics and chemical rate theory was implemented to calculate the growth of point defect clusters(PDC) and copper-rich precipitates(CRP) which could change the mechanical properties of reactor pressure vessel(RPV) steels in a nuclear power plant. A number of time-dependent differential equations were established and numerically integrated to estimate the evolution of irradiation defects. The calculation showed that the concentration of the vacancies was higher than that of the self-interstitial atoms. The higher concentration of vacancies induced a formation of the CRPs in the later stage. The size of the CRPs was used to estimate the mechanical property changes in RPV steels, as is the same case with the PDCs. The calculation results were compared with the measured values of yield strength change and Charpy V-notch transition temperature shift, which were obtained from the surveillance test data of Korean light water reactors(LWRs). The estimated values were in fair agreement with the experimental results in spite of the uncertainty of the modeling parameters.

2018년 자살 관련 지표들과 추이

이두웅 ( Doo Woong Lee ),권준현 ( Junhyun Kwon ),양지은 ( Jieun Yang ),주영준 ( Yeong Jun Ju ),박은철 ( Eun-cheol Park ),장성인 ( Sung-in Jang ) 한국보건행정학회 2020 보건행정학회지 Vol.30 No.1

Suicide has been a long-standing problem for global public health, along with almost 800,000 deaths from suicide worldwide in 2016, accounting for 1.4% of all deaths. South Korea was ranked first in suicide mortality in 2018 among countries in the Organization for Economic Cooperation and Development. This study aimed to suggest up-to-date information about suicide-related indicators such as the rate of suicidal ideation, suicide attempt, and suicide death, and its trends by applying sampling weight to make it nationally representative. In this study, we used the data sources: Korea National Health and Nutrition Examination (KNHANES, ‘07-13, ‘15-18), Korean Community Health Survey (KCHS, ‘08-09, ‘13, ‘17), Korean Wealth Panel Study (KOWEPS, ‘12-18), Korea Health Panel Survey (KHP, ‘10-13), and Statistics Korea (1983-2017). The rate of suicidal ideation as recent year was 4.73% (KNHANES, ‘17), 6.96% (KCHS, ‘17), 2.29% (KOWEPS, ‘18), and 5.39% (KHP, ‘13). That of suicide attempt as recent year was 0.51% (KNHANES, ‘18), 0.32% (KCHS, ‘17), and 0.15% (KOWEPS, ‘18). Annual percentage change (APC) of suicidal ideation was -15.4% (KNHANES, ‘07-13, ‘15, ‘17), -2.5% (KCHS, ‘08-09, ‘13, ‘17), -10.8% (KOWEPS, ‘12-18), and -10.9% (KHP, ‘10-13). APC of suicide attempt was -4.4% (KNHANES, ‘07-13, ‘15-18), -4.4% (KCHS, ‘08-09, ‘13, ‘17), and -13.6% (KOWEPS, ‘12-18). APC of death by intentional self-harm was -1.25% (Statistics Korea, ‘07-18). All suicide-related indicators were found to be decreasing in the overall from 2009. Individuals with lower income level were more likely to experience suicidal ideation and suicide attempts. Even though suicide rate had been continuously decreasing from its highest point in 2011 (suicide rate: 31.7 per 100,000 population) to 2017 (suicide rate: 24.3 per 100,000 population), it increased again in 2018 (suicide rate: 26.6 per 100,000 population). This information would be grounded on policy implementation for suicide prevention, thus continuous data observation is necessary.

중성자 조사에 따른 Ni도금피복재에서의 He발생량평가

황성식 ( Seong Sik Hwang ),권준현 ( Junhyun Kwon ),김동진 ( Dong Jin Kim ),김성우 ( Sung Woo Kim ) 한국부식방식학회 2021 Corrosion Science and Technology Vol.20 No.5

Neutron dose level at bottom head of a reactor pressure vessel (RPV) was calculated using reactor vessel neutron transport for a Korean nuclear power plant A. At 34 EFPY with a 40-year (2042) design life after plating repair, irradiation fast neutron effect was 6.6x10¹⁵ n/Nuclear power plant, Corrosion of RPV steel, Ni plating, Neutron effect, He generation. As helium(He) gas can be generated by Ni only at 1/10⁶ level of 5 × 10²¹ n/㎠, He generation possibility in the Ni plating layer is very little during 40 years of operation (2042, 34 EFPY). Thermal neutrons can significantly affect the generation of He from Ni metal. At 10 years after a repair, He can be generated at a level of about 0.06 appm, a level that can add general welding repair without any consideration. After 40 years of repair, 9.8 appm of He may be generated. Although this is a rather high value, it is within the range of 0.1 to 10 appm when welding repair can be applied. Clad repair by Ni electroplating technology is expected to greatly improve the operation efficiency by improving the safety and shortening the maintenance period of the nuclear power plant.

핀 온 디스크 시험에서 적층 제조된 오스테나이트계 스테인리스 강의 마멸 거동

김정민(Jung-min Kim),권준현(Junhyun Kwon) 한국트라이볼로지학회 2019 한국트라이볼로지학회 학술대회 Vol.2019 No.4

양전자소멸 수명시간 측정을 통한 폴리머소재의 자유부피에 관한 연구

김용민(Yongmin Kim),신중기(Jungki Shin),권준현(Junhyun Kwon) 한국방사선학회 2012 한국방사선학회 논문지 Vol.6 No.6

양전자소멸법은 양전자와 전자가 만나 소멸하면서 발생하는 광자로부터 물질의 상태를 간접적으로 파악하는 실험 방법이다. 본 연구에서는 다양한 분야에서 널리 사용되고 있는 폴리머인 CR, EPDM, NBR에 대하여 양전자소멸법을 통해 양전자 소멸시간을 측정하였다. 한국원자력연구원의 Na-22 선원을 이용한 양전자소멸시간측정장치를 통해 양전자소멸시간의 세가지 수명과 세기를 측정하였다. 이중 세 번째 수명성분은 폴리머의 자유부피와 직접적으로 관계된다. Tao-Eldrup 모델을 이용하여 3가지 폴리머에 대한 자유부피를 측정하였다. 그 결과 CR, EPDM, NBR의 자유부피와 상대비율은 각각 0.1217㎚³(1.910%), 0.1478㎚³(5.315%), 0.1216㎚³(2.638%)로 나타났다. 이를 통해 양전자소멸법의 폴리머에 대한 적용성을 확인할 수 있었으며 향후 비파괴적으로 폴리머의 특성변화를 분석하는 자료로 활용될 수 있을 것이다. Positron Annihilation Lifetime Spectroscopy is a non-destructive technique to study voids and defects in solids by the measurement of gammas from electron-positron annihilation. In this study, we measured the lifetime of CR, EPDM, NBR, all of which are widely used polymer in various fields. A conventional fast-fast coincidence system in KAERI(Korea Atomic Energy Research Institute) has been used to measure the lifetime spectra, Three lifetime components were analyzed from each lifetime spectra. According to Tao-Eldrup model equation, the size and fraction of free-volume were calculated. Mean radius and free volume fraction of CR, EPDM NBR are 0.1217㎚³(1.9103%), 0.14780㎚³(5.3147%), 0.1216㎚³(2.6381%), respectively. Through these measurements, we identified the feasibility of the PAL system for polymer analysis.

한국 지역 간 보건의료수준의 상대적 위치 비교 연구: Position Value for Relative Comparison Index를 활용하여

윤흰뫼 ( Hin-moi Youn ),윤초아 ( Choa Yun ),강수현 ( Soo Hyun Kang ),권준현 ( Junhyun Kwon ),이현지 ( Hyeon Ji Lee ),박은철 ( Eun-cheol Park ),장성인 ( Sung-in Jang ) 한국보건행정학회 2021 보건행정학회지 Vol.31 No.4

Background: This study aims to measure regional healthcare differences in Korea, and define relatively underserved areas. Methods: We employed position value for relative comparison index (PARC) to measure the healthcare status of 250 areas using 137 indicators in five following domains: healthcare demand, supply, accessibility, service utilization, and outcome. We performed a sensitivity analysis using t-SNE (t-distributed stochastic neighboring embedding). Results: Based on PARC values, 83 areas were defined as relatively underserved areas, 49 of which were categorized as moderate and 34 as severe. The provincial regions with the most underserved areas were Gyeongbuk (16 areas), Gangwon (13), Jeonnam (13), and Gyeongnam (12). Conclusion: This study suggests a relative comparison approach to define relatively underserved areas in healthcare. Further studies incorporating various perspectives and methods are required for policy implications.

2019년 자살 관련 지표들과 추이

김승훈 ( Seung Hoon Kim ),이두웅 ( Doo Woong Lee ),권준현 ( Junhyun Kwon ),양지은 ( Jieun Yang ),박은철 ( Eun-cheol Park ),장성인 ( Sung-in Jang ) 한국보건행정학회 2021 보건행정학회지 Vol.31 No.2

This study aimed to update suicide-related indicators including suicidal ideation, suicide attempts, and the number of suicidal deaths. Based on up-to-date information, we observed the trends of suicide-related indicators. In this study, five data sources were used to observe the trends of suicide-related indicators: Statistics Korea (1983-2019), Korean National Health and Nutrition Examination (KNHANES, ‘07-13, ‘15-19), Korean Community Health Survey (KCHS, ‘08-09, ‘13, ‘17), Korean Wealth Panel Study (KOWEPS, ‘12-19), and Korea Health Panel Survey (KHP, ‘10-13, ‘16-17). The suicide rate, which peaked in 2011, declined until 2017 and then started to rise again from 2018, recording a suicide rate of 26.9 per 100,000 people in 2019. The rate of suicidal ideation estimated based on the recently available data was 4.62% (KNHANES, ‘19), 3.51% (KHP, ‘16), 2.87% (KHP, ‘17), and 1.70% (KOWEPS, ‘19). That of suicide attempt as recent year was 0.43% (KNHANES, ‘19), 0.07% (KOWEPS, ‘19). Annual percentage change of death by intentional self-harm was -2.11% (Statistics Korea), and that of suicidal ideation was -14.7% (KNHANES), -2.5% (KCHS), -10.6% (KOWEPS), and -11.3% (KHP). Annual percentage change of suicide attempt was -5.0% (KNHANES), -4.4% (KCHS), and -11.3% (KOWEPS). The lower the income level, the higher the probability of experiencing suicide ideation and suicide attempts. Considering the recent increase in suicide rate in contrast to the continuing decline in suicidal ideation and suicide attempts, continuous data observation and appropriate policies regarding suicide prevention are needed.