• KDI Journal of Economic Policy
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• v.26 no.1
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• pp.105-140
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• 2004

Korea is entering the class of aging population nations. This paper investigates the extent demographic factors and the aging population affect the saving rate, using an extended life-cycle/permanent-income hypothesis on saving. The results of the tests with Korean household survey data from 1977 to 2002 reveal that real saving rates increase when the duration of lifetime and per household real disposable income rise, and decrease when the growth rate of income and net worth-to-GDP ratio rises. The growth rate of per household real disposable income has negative effects, suggesting that households calculate their life cycle income in a forward looking manner. The elasticities with respect to a change in the lifetime horizon and the growth rate of per household income are 0.58 and -0.03, respectively. A one percent rise in the net worth to GDP ratio reduces the saving rate by 0.3 percent. A one percent rise in per household income increases it by 0.33 percent. The younger-age and the elder-age dependency ratios have insignificant effects on the household saving rate behavior. When Korean life expectancy rises, the private saving rate declines modestly and the government saving rate declines substantially. The economy's real net saving rate declines from 33 percent in 2002 to 30 percent by the year 2030.

• Journal of Families and Better Life
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• v.10 no.2
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• pp.263-276
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• 1992

The middle aged woman today have met discord of unbalance in gender role identity due to change in cultual situation and view of value of our country since 1960. Under the promise that there is a relationship between depression which is a psychological characteristic and gender role traits of middle aged woman, and in consideration that the depression of middle-aged woman may be differentiated depend upon the expressive manner of gender role, this research was trying to find out the relationship between the gender role traits and the depression of middle aged women. The purpose of his research is to provide data to be helpful for marital hygirne of middle-aged women by presenting a plan to reduce depression of middle-aged woman by the desirable gender role. In order for such studying purpose, the gender role, physical symptom and socio-demographic feature were researched using the scale which was by this researcher. The questionnaire sheets of 327 use form middle-aged woman of 39 years to 59 years old in full with their last child is 10 years or order. The summerized results of study are as follows. In consolidation of the foregoing it have known that the socio-economic position and recognition of physical symptom and the masculinity feature has shown less depression as she feels less physical symptom due to there is relationship between recondition of physical symptom and he masculity feature, and also, it has known that the depression of middle-aged women may be reduced when such extroversive and expressional gender role features are developed as 'aggressiveness and ' fraternity, and the depression may be prompted due to such introvert and easy to be impacted by grudge as 'impression'

• Journal of Families and Better Life
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• v.20 no.6
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• pp.129-140
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• 2002

The purpose of this study was to collect baseline data for women＇s needs for social education, in order to eventually contribute to improving the quality of women's social education. In the needs survey, information on the motive to participate in social education programs, obstacles to participation, and program preferences was collected. The data were then analyzed by women＇s socio-demographic characteristics. Survey participants were married women between the ages of twenty to fifty, who were sampled from Seoul, six metropolitan areas, and nine provinces. For the final analysis, 1,026 survey forms were used. The motive for participating in women＇s social education programs was examined by each category. Overall, the participants showed the highest level in educational achievement motif. The motivations for lifestyle change, self-realization, and social accomplishment were also high and at a similar level. As for obstacles to participation, social obstacle received the highest rate, followed by family obstacle and personal reasons. As for the type of social education programs, home management programs were the most preferred, followed by psychological education, family education, leisure activity programs, physical education, and social education programs.

• Proceedings of the KAIS Fall Conference
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• 2003.11a
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• pp.141-148
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• 2003

Customer retention is a common concern for many industries and a critical issue for the survival in today's greatly compressed marketplace. Current customer retention models only focus on detection of potential defectors based on the likelihood of defection by using demographic and customer profile information. In this paper, we propose a dynamic procedure for defection detection and prevention using past and current customer behavior by utilizing SOM and Markov chain. The basic idea originates from the observation that a customer has a tendency to change his behavior (i.e. trim-out his usage volumes) before his eventual withdrawal. This gradual pulling out process offers the company the opportunity to detect the defection signals. With this approach, we have two significant benefits compared with existing defection detection studies. First, our procedure can predict when the potential defectors could withdraw and this feature helps to give marketing managers ample lead-time for preparing defection prevention plans. The second benefit is that our approach can provide a procedure for not only defection detection but also defection prevention, which could suggest the desirable behavior state for the next period so as to lower the likelihood of defection. We applied our dynamic procedure for defection detection and prevention to the online gaming industry. Our suggested procedure could predict potential defectors without deterioration of prediction accuracy compared to that of the MLP neural network and DT.

• Journal of Korean Society of Rural Planning
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• v.25 no.1
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• pp.1-10
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• 2019

This purpose of this study was to investigate the perception and participation satisfaction of residents who participated in the rural landscape improvement project in Geumsan. The projects were conducted in three villages of Geumsan in 2018 and total 96 residents had participated. The results of the questionnaire survey on the participants showed that they usually have interests in community activities and actively participated. As a result of analyzing factors related to the change of residents' perceptions and satisfaction. It was found that there was significant difference in perception and satisfaction according to frequency of participation, not demographic factors. It is interesting that active interaction among residents during the projects and satisfaction on process are important factor for overall project satisfaction. For successful rural landscape improvement projects, it is necessary to encourage and support interaction and communication among residents. In addition, more various programs need to be developed to foster residents' attachment and sense of community.

• Korean journal of aerospace and environmental medicine
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• v.31 no.3
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• pp.61-63
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• 2021

In Vol. 31, No. 3, our journal prepared three review articles, an original paper, and two case reports. First, as COVID-19 continues for a long time, aviation workers, including pilots, are also experiencing mental problems such as depression. Therefore, we have compiled the basic principles for improving the mental health of pilots. Next, it is difficult to properly perform cardio-pulmonary resuscitation (CPR) when a cardiac arrest situation occurs in an aircraft. Moreover, in the context of the COVID-19 pandemic, CPR is more difficult because medical staff and other passengers may also be exposed to infections. Therefore, we have summarized the principles of CPR on board and ways to perform CPR while keeping the safety of medical staff and other passengers in the COVID-19 situation. The sudden change of gravity caused by space travel has various effects on the human body, and among them, the effect on the immune system is profound. Therefore, we reviewed the research methods to study the effect of gravity on the immune system and the results. In addition, we analyzed the demographic characteristics and health status of immigrant visa applicants who intended to immigrate to the United States over the past five years. Next, through two case reports, we reported cases of determining physical fitness for aviation service in patients who recovered after receiving appropriate treatment for chronic myeloid leukemia or renal cell carcinoma.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.25 no.4
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• pp.300-311
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• 2022

Purpose: Dysphagia, vomiting and feeding difficulties are common symptoms, with which children present. Esophageal function testing with high resolution manometry can help in diagnosing and treating these patients. We aim to access the clinical utility of high-resolution manometry of esophagus in symptomatic pediatric patients. Methods: A retrospective chart review was done on all symptomatic patients who underwent esophageal high-resolution manometry between 2010 and 2019 at Sydney Children's Hospital, Australia. Manometry results were categorized based on Chicago classification. Demographic data, indication of procedure, manometric findings, and details of treatment changes were obtained and analyzed. Results: There were 62 patients with median age of 10 years (9 months-18 years). The main indication for the procedure was dysphagia (56%). Thirty-two percent of patients had a co-morbid condition, with esophageal atresia accounting for 16%. The majority (77%) of patients had abnormal manometry which included, ineffective esophageal motility in 45.2%. In esophageal atresia cohort, esophageal pressurization was seen in 50%, aperistalsis in 40% and 10% with prior fundoplication had esophago-gastric junction obstruction. Patients with esophago-gastric junction obstruction or achalasia were treated by either pneumatic dilation or Heller's myotomy. Patients with ineffective esophageal motility and rumination were treated with a trial of prokinetics/dietary texture modification and diaphragmatic breathing. Conclusion: Esophageal high-resolution manometry has a role in the evaluation of symptomatic pediatric patients. The majority of our patients had abnormal results which led to change in treatments, with either medication, surgery and/or feeding modification with resultant improvement in symptoms.

• Korean Journal of Childcare and Education
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• v.19 no.1
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• pp.1-21
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• 2023

Objective: The purpose of this study was to examine the structural relationship among child care center innovativeness, the early childhood(EC) teacher's digital literacy(DL), technostress and teacher efficacy. Methods: The participants were 454 EC teachers and were selected only if they had worked for more than one year. The innovativeness of childcare centers, the teacher's DL, technostress, and teacher efficacy were assessed through online self-report questionaries. Data were analyzed through ANOVA, t-test, and SEM. Results: First, DL and technostress of EC teachers differed in some ways depending on the teacher's demographic background, the characteristics of their working institution, and their educational level of digital skills. Second, the childcare center innovativeness directly had a significant positive effect on DL, technostress, and efficacy of the teachers. In addition, the effect of the innovativeness on teacher efficacy was mediated by DL and technostress of the teachers. Conclusion/Implications: The more efforts made of childcare centers for recognizing the rapid development of DL and trying to change, the better the teacher's scores of DL and the appropriate technostress were, which increases teacher efficacy. So, continuous training and education for teachers with consideration of age and teaching experience, as well as public aid to improve teachers' DL skills are required.

• Journal of Distribution Science
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• v.21 no.9
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• pp.43-53
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• 2023

Purpose: This study aims to examine the demographic similarities and differences in objectives, methodology, and findings of previous studies in the context of gaining financial literacy using videos. This study employs a systematic review design. Research design, data and methodology: Based on the content analysis method, 15 articles were chosen from Scopus and Science Direct during 2015-2020. After formulating the research questions, the paper identification process, screening, eligibility, and quality appraisal are discussed in the methodology. The keywords for the advanced search included "Financial literacy," "Financial Education," and "Video". Results: The results of this study indicate the effectiveness of learning financial literacy using videos. Significant results were obtained when students interacted with the video content distribution. The findings of this study provide an overview and lead to a better understanding of the use of video in financial literacy. Conclusions: This study is important as a guide for educators in future research and practice planning. A systematic review on this topic is the research gap. Video learning was active learning that involved student-centered activities that help students engage with financial literacy. By conducting a systematic review, researchers and readers may also understand how extending an individual's financial literacy may change after financial education.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.48-48
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• 2021

2020년은 급격한 인구감소, 고령화, 대도시 인구집중 등 우리나라의 인구구조변화가 급격하게 진행되는 것을 보여주는 해였다. 2020년 주민등록인구수가 처음으로 감소하였으며, 2020년을 기점으로 수도권 인구가 비수도권 인구를 추월할 것으로 전망되었다(통계청, 2020.6). 인구감소, 도시인구 집중화 외에도 1-2인의 소규모 가구 증가 등의 인구구조변화도 진행되고 있다. 이러한 인구구조 변화는 우리나라의 잠재적 경제성장률 등 국가경제뿐만 아니라, 지역별 물이용 변화 등 다양한 공공서비스 수요패턴 및 관련 재정 등에도 영향을 미친다. 이는 공공서비스 공급 및 관련 인프라 유지·관리에도 영향을 미치게 된다. 특히 중소지역의 공공서비스 사업의 경우, 인구감소로 인한 공공서비스 수요 및 관련 재정수입의 감소로 사업의 지속가능성이 크게 약화 될 수 있다. 따라서 인구구조변화가 공공서비스 수요에 미치는 영향을 분석하여, 관련 인프라시설의 유지·관리에 미칠 영향을 진단해 볼 필요가 있다. 이에 본 연구에서는 인구구조 변화가 공공서비스 중 물관리에 어떠한 영향을 미치는지 정량적으로 분석해보고자 하였다. 이를 위해 160개 지방자치단체의 2006~2018년까지의 패널 자료를 구성하여 인구구조 변화 특성 중 인구 규모 변화, 소규모 가구 수의 변화, 인구 연령대 변화(고령화)가 물이용 변화에 미치는 영향을 회귀분석을 통해 중점적으로 분석해보았다. 본 연구의 인구구조 변화에 따른 공공서비스 이용변화에 대한 정량적 분석결과는 공공서비스 운영·관리 시 참고할 수 있을 것이다.