• Physical Therapy Rehabilitation Science
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• 제11권1호
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• pp.49-57
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• 2022

Objective: This study aims to conduct a comprehensive review of monitoring systems to monitor and manage physical function of community-dwelling elderly living alone and suggest future directions of unobtrusive monitoring. Design: Literature review Methods: The importance of health-related monitoring has been emphasized due to the aging population and novel corona virus (COVID-19) outbreak.As the population gets old and because of changes in culture, the number of single-person households among the elderly is expected to continue to increase. Elders are staying home longer and their physical function may decline rapidly,which can be a disturbing factorto successful aging.Therefore, systematic elderly management must be considered. Results: Frequently used technologies to monitor elders at home included red, green, blue (RGB) camera, accelerometer, passive infrared (PIR) sensor, wearable devices, and depth camera. Of them all, considering privacy concerns and easy-to-use features for elders, depth camera possibly can be a technology to be adapted at homes to unobtrusively monitor physical function of elderly living alone.The depth camera has been used to evaluate physical functions during rehabilitation and proven its efficiency. Conclusions: Therefore, physical monitoring system that is unobtrusive should be studied and developed in the future to monitor physical function of community-dwelling elderly living alone for the aging population.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2020년도 추계학술발표대회
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• pp.315-318
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• 2020

반려동물을 키우는 사람들 중 1인 가구 증가로 인하여 주인의 부재 시 반려동물에게 배식하는데 어려움이 있어 자동급식기가 고안되었다. 본 논문에서는 아두이노 플랫폼을 이용한 사료 배급뿐만 아니라 약 배급 기능을 갖춘 IoT 약, 사료 혼합 자동급식기를 제안한다. 제안한 지동급식기에서는 사용자가 웹사이트를 통해 급식 서비스에 접근할 수 있고, 두 재료의 혼합 자동 배식 시스템을 통하여 편리하며 확장된 배식 기능을 경험 할 것 이라고 기대된다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 춘계학술대회
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• pp.554-556
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• 2022

최근 1인 가구의 급증에 따라 고독사가 중요한 사회 문제로 주목받고 있다. 본 논문에서는 고독사 위험에 노출된 사회적 약자들을 보호하기 위하여 RFID를 활용한 적응형 모니터링 시스템을 개발한다. 개발된 시스템은 웨어러블 RFID 태그, 주거지 내 부착된 RFID 리더기, 사용자 모니터링 앱으로 구성된다. 개발된 시스템은 웨어러블 태그를 지닌 사용자가 리더기가 부착된 장소에 머무는 시간을 측정하고, 적응적으로 결정된 임계치를 초과할 때 보호자에게 긴급 알림을 전송한다. 아두이노를 기반으로 거주지를 모델링한 프로토타입을 구현함으로써 설계된 시스템의 효용성을 검증하였다.

• ETRI Journal
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• 제45권4호
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• pp.650-665
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• 2023

A novel smart metering technique capable of anomaly detection was proposed for real-time home power management system. Smart meter data generated in real-time were obtained from 900 households of single apartments. To detect outliers and missing values in smart meter data, a deep learning model, the autoencoder, consisting of a graph convolutional network and bidirectional long short-term memory network, was applied to the smart metering technique. Power management based on the smart metering technique was executed by multi-objective optimization in the presence of a battery storage system and an electric vehicle. The results of the power management employing the proposed smart metering technique indicate a reduction in electricity cost and amount of power supplied by the grid compared to the results of power management without anomaly detection.

• Asian Journal of Business Environment
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• 제14권2호
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• pp.31-40
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• 2024

Purpose: This study aims to explore the factors affecting the willingness to pay for chicken delivery services targeting college students. The results of this study provide insights for improving food delivery market services and developing effective marketing strategies. Research design, data and methodology: A survey employing a questionnaire was administered to students at Chungbuk National University over a 10-day period from May 15 to May 24, 2023. Out of 232 distributed surveys, 218 were considered suitable for analysis. Binomial logistic regression analysis was conducted with the willingness to pay for delivery fees contingent on chicken price, serving as the dependent variable. Results: The main findings are following. First, as the price of chicken increases, the percentage of individuals willing to pay more than 2,000 won for delivery services decreases. Second, regardless of chicken price, males exhibit a lower tendency to bear higher delivery service fees compared to females. Lastly, those who lack awareness of their recent delivery fees or have previously paid charges exceeding 3,000 won demonstrate a greater propensity to pay higher delivery service fees compared to those who have paid fees below 3,000 won. Conclusions: It is essential for chicken sellers to identify key customer segments such as single-person households, and offer pricing and services tailored to their needs and preferences.

• Communications for Statistical Applications and Methods
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• 제31권4호
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• pp.377-391
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• 2024

Accurate household projections are essential for sectors such as housing supply and tax policy planning, given the rapid social changes like declining birthrates, an aging population, and a rise in single-person households that impact household size and type. Korea introduced its first register-based census in 2015, transitioning from five-year general survey-based approach to an annual administrative data-based census. This change in census allows for more frequent and effective capturing the rapid demographic shifts and trends. However, this change in census has caused challenges in future projection by the existing household projection model due to the rapid dynamics. This paper proposes a new household projection method, the N-point Modified Exponential Model (MEM), that accurately reflects register-based census data and mitigates the impact of rapid demographic changes, in three types: the Weighted N-point MEM, the Regression-based N-point MEM, and the Rolling Weighted N+point MEM. Using register-based census data from 2016 to 2020 to forecast household headship rates by age, household size, and household type to 2051, the N-point modified exponential model outperformed the existing model in both long- and short-term forecast accuracy, suggesting its suitability as a future household projection model for Korea.

• 아태비즈니스연구
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• 제15권2호
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• pp.89-106
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• 2024

Purpose - The purpose of this study is to ascertain the influence of individual consumption values and consumption tendencies on repurchase intention. It aims to examine how individual characteristics affect purchasing behavior in response to social environmental changes. Design/Methodology/Approach - This study targeted individuals who have experience purchasing convenience store lunches in Korea and collected 201 survey responses. Exploratory Factor Analysis (EFA) and Multiple Regression Analysis were employed to analyze the data. Findings - Individual consumption values significantly influenced consumption tendencies. Additionally it was found that both consumption values and consumption tendencies have some significant impact on repurchase intention. However, certain factors had a significant influence specifically in the context of negative relationships, which was analyzed to be influenced by social environmental changes. Research Implications and Limitations - This study verified the clear relationship between consumption values, consumption tendencies, and repurchase intention, such as product purchase. However, it also verified that the relationship of these factors does not necessarily have a strictly positive impact. It suggests that future marketing research should also investigate factors such as the increase of single-person households and social environmental changes.

• Human Ecology Research
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• 제62권3호
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• pp.427-439
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• 2024

The purpose of this study was to analyze the financial portfolios of single-person households. For the analysis, The purpose of this study is to verify the mediation effect of stress-coping strategies in the relationship between ego-resiliency and burn-out among childcare center teachers. The subjects were 255 childcare center teachers in Gyeongbuk Province. The measurement tools used for this study include ego-resiliency, burn-out, and stresscoping strategy questionnaires. The collected data points were analyzed via Structural Equation Modeling(SEM), Bootstrapping, Pearson Correlation, using SPSS 21.0 and AMOS 20.0 The results of the study analyzing the Structural Equation Model are as follows. First, teachers' ego-resiliency had a negative influence on burn-out. Second, teachers' problem-focused coping strategies had a negative influence on burn-out, while emotionfocused coping strategies had a positive influence on burn-out. Third, teachers' ego-resiliency had a positive influence on both problem-focused and emotion-focused coping strategies. Fourth, teachers' ego-resiliency had an indirect effect on burn-out by improving both problem-focused and emotion-focused coping strategies. This study suggests that education on the use of problem-focused coping strategies in stressful situations is necessary to successfully manage childcare teachers' burn-out in childcare settings in which mandatory evaluation systems are newly implemented.

• 통합자연과학논문집
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• 제17권3호
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• pp.75-86
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• 2024

Surveys are an important data collection method for national statistics in Korea. As of July 22, 2024, based on data provided by the MDIS of Statistics Korea, approximately 92% of national statistics are compiled using the survey method, and about 85% of these rely primarily on face-to-face interviews for data collection. However, with the increase in single-person households, the nonresponse rate of surveys has been rising each year. This study examined the behaviors of respondents across different survey modes used in the 2020 Korean Crime Victim Survey, whose raw data about survey response modes is available for public use on the MDIS website in Statistics Korea. The results show that, overall, the younger the age group, the higher the proportion of self-administered responses, with this proportion being higher for female than male except over 60 years old. Notably, the 20s age group has a significantly higher percentage of self-administered (TAPI) responses for both male and female. Furthermore, the response using tablets generally has a higher proportion compared to the response using paper across all age groups except for females in their teens, regardless of whether the survey is interviewer-administered or self-administered.

• 지역연구
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• 제35권3호
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• pp.45-58
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• 2019

정부는 최근 서울 근교에 5개의 대규모 공공택지지구, 소위 3기 신도시를 추진하고 있다. 이와 관련하여 본 연구는 신도시를 계획함에 있어 주요하게 고려해야 할 사항들이 무엇인지 설문조사자료를 활용하여 수요자인 주민들의 관점에서 분석하고자 하였다. 이를 위해 기존의 1기 및 2기 신도시와 건설예정인 3기 신도시를 대상으로 환경적 쾌적성, 일자리 등 자족성, 교통접근성과 편리성 등 8개 지표를 종속변수로 하고, 성별, 연령, 가구원수, 가구소득, 직업, 거주지역 등 주민의 특성을 설명변수로 하여 빈도분석 및 분산분석을 실시하였다. 분석결과, 응답자들은 1기 신도시를 2기 신도시에 비해 더 긍정적으로 평가하였다. 일자리 등 자족성 항목에 대하여는 1기와 2기 신도시 모두 낮은 수준으로 나타났다. 또한 1기 신도시는 8개 지표에 대하여 성별, 가구원수, 가구소득에 따른 응답의 유의적 차이가 없었으며, 2기 신도시는 가구원수, 가구소득, 직업, 거주지역에 따른 유의적 차이가 나타나지 않았다. 다만 3기 신도시의 경우 연령, 가구원수, 가구소득 및 직업에 따른 각 지표의 중요성에 대한 평가가 유의적 차이를 나타내었다. 3기 신도시에 대한 다중비교분석 결과를 보면, 환경적 쾌적성에 대하여 청년층, 1인 또는 5인 이상 가구, 관리/전문/사무직이, 교통의 접근성과 편리성의 경우 청년층, 소득이 많은 계층, 관리/전문/사무직에서 중요도를 높게 평가한 것으로 나타났다. 향후 3기 신도시 계획 시에 각 계획지표들에 대한 다양한 개인적 특성과 수요를 고려해야 할 필요가 있음을 시사한다.