• 응용통계연구
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• 제35권4호
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• pp.553-568
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• 2022

가계동향조사는 가구에 대한 가계수지 실태를 파악하여 국민 소득·소비 수준과 그 변화의 측정 및 분석 등을 목적으로 하는 통계청의 대표적인 조사이다. 최근 여러 기관들에서 2017년과 2018년의 가계동향 지출부문에서 발생한 시계열 단절에 대한 문제를 인식하고, 이 기간에 대한 시계열 연계를 위한 관련 연구를 진행하고 있다. 본 연구에서는 2016년까지의 가계동향 조사 시계열 특성을 파악하고, 이를 반영하여 2017년과 2018년의 지출액에 대한 시계열을 연계하는 예측값을 도출한다. 본 연구에서는 각 지출 항목들의 시계열적 특성을 골고루 반영하는 동시에 특정 예측 모형의 영향을 줄이기 위하여 총 8개의 회귀모형, 시계열모형, 머신러닝 기법을 합성하여 사용하였다. 특히 본 연구의 주목할 만한 특징은, Top-down 또는 Bottom-up 방식이 아닌, 정보의 손실없이 가계동향조사의 계층 구조를 반영할 수 있는 optimal combination 기법을 사용하여 예측력을 향상시켰다는 점이다. 2017년부터 2019년 자료에 대한 가계동향 지출 부문의 연계 분석 결과, 본 연구가 제안하는 연계 방식이 시계열 단절성 회복 및 예측력 향상에 기여하며, 또한 optimal combination 기법에 의한 계층 조정 후의 예측값이 조사자료에 보다 근접한 결과를 보여줌을 확인하였다.

• 한국ITS학회 논문지
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• 제21권3호
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• pp.53-61
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• 2022

최근 보행의 중요도는 점진적으로 높아지고 있는 상황에도 불구하고 보행활동시간 특성에 대한 분석은 미미한 실정이다. 본 연구에서는 생활시간조사 자료를 활용하여 보행활동시간 특성에 대해 알아보았다. 통행보행과 여가보행으로 구분하여 군집분석과 대응분석을 수행하였으며, 이를 통하여 각 군집별 특성을 파악하였다. 통행보행을 전혀 하지 않는 사람들은 근로자가 주를 이루었으며, 통행보행을 하는 사람들은 가정주부 그룹과 학생 그룹으로 구분할 수 있었다. 학생 그룹의 첨두는 오전에 명확하게 나타나며, 오후 첨두는 분산되어 있었다. 가정주부 그룹의 첨두는 뚜렷하지 않으나, 오후 시간대 보행을 주로 하는 것을 확인할 수 있었다. 여가보행을 전혀 하지 않는 사람들은 근로자가 주를 이루었으며, 여가보행을 주로하는 사람들은 노년 그룹이었다. 노년 그룹의 여가보행 패턴은 15시 전후에 주로 하는 그룹과 15시 전후를 제외한 타시간에 주로 하는 그룹으로 구분될 수 있다. 이러한 보행의 보행활동시간 특성은 향후 보행정책 수립시 기초자료로 활용이 기대된다.

• 가족자원경영과 정책
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• 제18권2호
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• pp.75-102
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• 2014

This study classified the current work-life balance of full-time female paid workers and tested the typology by using the 2009 Korean Time Survey. The categorization demographic and psychological characteristics of women belonging to each type were comparatively analyzed. It was found that full-time female paid workers used an average of 435.7 minutes for work, 146.4 minutes for family, 104.5 minutes for leisure, and 17.7 minutes for growth. On the basis of times used in each area of work and life, individuals were classified into family-oriented type, work-leisure parallel type, work-oriented type, work-growth parallel type, and work-family parallel type. Psychological characteristics were examined by type. The work-oriented type women experienced feelings of lack of time and fatigue the most compared with women of other types. From examining the influence that the amount of time used in each area of work and life had on psychological characteristics, it was shown that the activity time relevant to leisure influenced psychological characteristics the most. Lastly, based on the limitations of this study, future assignments are discussed.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2004년도 한국우주과학회보 제13권1호
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• pp.27-27
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• 2004

There are increasing number of optical sky surveys for time-series observations, aiming to discover either photometric variations(variable stars, microlensing, or transients) or astrometric variations(near-earth objects, trans-neptunian objects). Some surveys, including YSTAR, use a single filter in order to increase the survey efficiency. However, the traditional method of atmospheric extinction and standardization requires the measurement of source color in at least two passbands. (omitted)

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 춘계학술대회 논문집
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• pp.263-271
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• 2003

In this paper, we presents the results of the leading 2 European projects in the real-time train conflict dection and resolution field. One is MARCO(Multi-level Advanced Railways Conflicts Resolution and Operation Control) and the other is COMBINE(enhanced COntrol center for a Moving Block sigNaling systeEm) project. From the results of the survey, we derive the basic principles in order to use in the similar project of Korea Nation Railway.

• 품질경영학회지
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• 제21권1호
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• pp.11-21
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• 1993

In this paper, we survey the current status of measurement labor in Korean Industry. At the same time we try to predit the demand and supply of measurement labor to suggest policy measures for equilibrium in measurement labor market. We use a general production function for the prediction which include a set of general homethetic production function.

• 대한지역사회영양학회지
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• 제28권3호
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• pp.206-219
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• 2023

Objectives: Screen time refers to the time spent using screen media, such as televisions, smartphones, computers, or tablets. Excessive exposure to screen media has been reported to negatively impact young children's health and development, including overweight, short sleep duration, and language delays. This study examined the association of screen time and mealtime media use with dietary behaviors among preschool children. Methods: A cross-sectional survey was conducted on parents of children aged three to five years using the online questionnaires of the Nutrition Quotient for Preschoolers (NQ-P) and the Dietary Screening Test (DST). Data from 261 children's parents were analyzed. Results: Of the 261 children, 96.9% used screen media, 55.6% used screen media for two hours or more daily, and 30.7% were exposed to screen media during meals. The NQ-P scores were significantly lower in the children with longer screen time and mealtime media use. Children who used screen media for two hours or more and those exposed to screen media during meals consumed kimchi less frequently and confectionery and sugar-sweetened beverages more frequently than children who used less than two hours and were not exposed to screen media during meals. In addition, they were more likely to be picky about food, refuse to eat, and less likely to feed themselves than children with shorter screen time and no mealtime media use. Conclusions: This study reported an association between unhealthy dietary behaviors, feeding difficulties, and screen time and mealtime media use among preschool children. Further research should explore effective strategies for reducing children's screen time.

• 한국사회복지학
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• 제62권1호
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• pp.317-342
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• 2010

본 연구는 거주시설에서 생활하는 성인 지적장애인들의 일상생활을 살펴보고자 한 것이다. 이를 위해 24시간을 관찰 기록하는 생활시간조사방법을 활용하여 거주시설 지적장애인의 일상생활활동과 그 안에서 나타나는 상호작용을 분석하였다. 생활시간연구방법 중에서는 시간수지연구방법 중 '활동의 빈도'와 생활시간 중 '생활'에 초점을 맞추는 방법을 활용하여 내용 분석하였다. 거주시설 지적장애인의 일상생활 분석은 전 국민을 대상으로 한 생활시간조사 행동분류표(2004)를 기준으로 하여, 거주시설 일상생활의 특성을 살펴보았다. 상호작용 분석은 Flanders(1963)의 언어 상호작용분석모형을 기초로, 지적장애인과 생활재활교사의 상호작용 정도, 유형 등을 제시하였다. 이 연구는 국내 최초로 거주시설장애인의 일상생활을 있는 그대로 조명하여 그들의 일상에 대한 이해를 심층적으로 구축하고, 이용자와 생활재활교사의 상호작용을 분석한 점, 생활시간조사방법을 적용한 점 등에 그 의의가 있으며, 향후 관련 연구의 중요한 기초 자료가 될 것으로 본다.

• International Journal of Knowledge Content Development & Technology
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• 제10권2호
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• pp.39-49
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• 2020

Accurate and reliable Information improves decision making, reduces costs, and saves time. The ophthalmic Libraries supply quality ophthalmic information to the ophthalmologists to serve the patients in a better way and stimulate the growth of ophthalmic field. This paper aims to study the usage of library collection, services and assistance among the Ophthalmologists - Eye Doctors in India. A survey method is used to obtain the ophthalmologists' usage of library collection, services and assistance. Through convenient sampling method, a structured questionnaire is circulated to the ophthalmologists in India and 633 ophthalmologists are responded. Among the 633 ophthalmologist, 82.15% of the ophthalmologists use the library collection - book. 73.46% of the ophthalmologists use the online data / journals. 89.73% of the ophthalmologists seek assistance to locate books/articles/documents. There exists a significant difference between the ophthalmologists use of Library Service and gender (p value 0.001**). There exists a significant difference between the ophthalmologists use of Library Assistance / help and designation category (p value 0.000**). There exists a significant difference between the ophthalmologists use of Library Assistance / help and working experience (p value 0.017**). There exists a significant difference between Library Services (p value 0.009**), Library Assistance / help (p value 0.000**) and institution type. The study results will help the ophthalmic libraries to serve the user better.

• 한국치위생학회지
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• 제20권6호
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• pp.843-853
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• 2020

Objectives: This study aimed to assess the association between the use of dentures by the elderly and the prevalence of depression by using the original data from the 2017 Community Health Survey as basic data for the promotion of oral health and oral health policy development in the elderly. Methods: The study subjects were 67,835 elderly over 65 years of age. The raw data were collected from 2017 Community Health Survey in Korea Center for Disease Control and Prevention. Results: Among the demographic and sociological characteristics, the higher the age, the lower the educational level, the worse the subjective health level, and the higher the denture use. The higher the age, the lower the education level, the lower the income level, the worse the subjective health level, the more stress they have, the more sleep time, and the higher the prevalence of depression. The association between the use of dentures and the prevalence of depression was 1.071 times higher than that of not using dentures, and it was found that the prevalence of depression was affected. Conclusions: As a result, it was confirmed that the use of dentures influenced the prevalence of depression. Institutional support will be needed to establish a national-level prevention policy that can maintain and promote healthy oral conditions and prevent the need dentures in the elderly.