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의사결정나무분석에 의한 노인의 연령집단별 노쇠 결정요인 탐색
이영주,김건희 한국보건간호학회 2025 한국보건간호학회지 Vol.39 No.1
. Purpose: This study aimed to identify frailty determinants by age group. Methods: The participants were 9,955 older adults from the 2023 National Survey of the Living Conditions of Older Koreans. They were divided into three groups: young old (65~74 years), advanced old (75~84 years), and very advanced old (85+ years). The data were analyzed using IBM SPSS Statistics 29.0 and a decision tree. Results: Frailty prevalence increased with age: 2.0% in the young old, 7.0% in the advanced old, and 11.3% in the very advanced old group. Major predictors differed by group: activities of daily living in the young old, instrumental activities of daily living in the advanced old, and depression in the very advanced old. The primary causes of frailty gradually changed as people aged, moving from physical to psychological and social influences. Conclusion: These findings suggest the need for age-specific frailty management programs. Programs should emphasize physical activity for the young old and socio-psychological support for the very advanced old to support healthy aging.
The atomic decomposition of harmonic Bergman functions, dualities and Toeplitz operators
이영주 대한수학회 2009 대한수학회보 Vol.46 No.2
On the setting of the unit ball of R^n, we consider a Banach space of harmonic functions motivated by the atomic decomposition in the sense of Coifman and Rochberg [5]. First we identify its dual (resp. predual) space with certain harmonic function space of (resp. vanishing) logarithmic growth. Then we describe these spaces in terms of boundedness and compactness of certain Toeplitz operators.