• 아동학회지
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• 제38권2호
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• pp.191-204
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• 2017

Objective: The purpose of this study was to explore the structural relationships among duration of media use, behavior problems, and school adjustment, while accounting for gender differences. Methods: The study used 4th-wave panel data from the Korean Children and Youth Panel Study, and 2,119 first graders in elementary school were analyzed. The data were analyzed using Structural Equation Modeling. Results: The results can be summarized as follows. First, the duration of media use had a direct effect on school adjustment. Secondly, the duration of media use had an indirect effect on school adjustment through internalizing and externalizing problems. According to multigroup analysis, gender differences were found in the structural relations among variables. Conclusion: This study emphasizes the needs for media usage education to improve children's school adjustment. Furthermore, it suggests that different intervention strategies for internalizing/externalizing behavior problems are needed depending on gender.

• 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.

• Korean Journal of Radiology
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• 제21권10호
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• pp.1178-1186
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• 2020

Objective: To evaluate the incidence and risk factors of emetic complications associated with the intravenous administration of low-osmolality iodinated contrast media (ICM) in children undergoing computed tomography (CT). Materials and Methods: All children who underwent contrast-enhanced CT between April 2017 and July 2019 were included. Pediatric patients were instructed on the preparative dietary protocol at our institution. Experienced nurses in the radiology department monitored the children during the CT scans and recorded any emetic complications in their electronic medical records. These data were used to calculate the incidence of emetic complications. Various patient factors and technical factors, including fasting duration, the type and volume of ICM, and ongoing chemotherapy, were evaluated to identify risk factors for emetic complications using univariate and multivariate logistic regression analyses. Results: Among the 864 children (mean age, 8.4 ± 5.7 years) evaluated, 18 (2.1%) experienced emetic complications (6 experienced nausea only and 12 experienced nausea and vomiting). None of the children developed aspiration pneumonia. The mean fasting duration of patients with emesis was 7.9 ± 5.7 hours (range, 3-21 hours), whereas that of patients without nausea was 8.7 ± 5.7 hours (range, 0-24 hours). Fasting duration was not associated with the development of nausea and vomiting (p = 0.634). Multivariate logistic regression analysis revealed that ongoing chemotherapy (odds ratio [OR] = 4.323; 95% confidence interval [CI] = 1.430-13.064; p = 0.009), iomeprol use (OR = 7.219; 95% CI = 1.442-36.146; p = 0.016), and iohexol use (OR = 5.241; 95% CI = 1.350-20.346; p = 0.017) were independent risk factors for emetic complications. Conclusion: Only a small proportion (2.1%) of children experienced nausea or vomiting after exposure to low-osmolality ICM. Many children underwent excessive fasting; however, fasting duration was not associated with nausea and vomiting. Moreover, ongoing chemotherapy and the use of iomeprol or iohexol were identified as potential risk factors for emetic complications in children.

• 육아정책연구
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• 제12권3호
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• pp.55-76
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• 2018

본 연구는 2012년 전국 규모로 실시된 5차 한국아동패널의 자료를 활용하여 만 4세 유아의 개인적 특성요인(기질), 가족특성변인(모 취업여부), 생활시간변인(육아지원기관 이용시간, 기관에서의 낮잠시간, 전자매체 사용시간)이 유아의 야간수면시간에 어떠한 영향을 미치는지와 가장 높은 설명력을 가지는 변인이 무엇인지 살펴보고자 하였다. 그 결과, 유아의 개인적 특성변인, 가족특성변인, 생활시간변인이 야간수면시간과 부적 상관관계가 있는 것으로 나타났다. 상대적 설명력은 생활시간변인, 가족특성변인 순으로 높았으며 개인적 특성변인은 유의하지 않았다. 이에 따라 유아가 가정에서 충분한 야간수면을 취할 수 있도록 부모는 적절한 생활환경을 제공해 주어야하며 자녀의 양육을 지원하기 위해 가정과 기관의 연계 강화, 부모의 근무시간 유연제 등의 제도 확산과 시행의 필요성이 제기된다.

• 대한한방소아과학회지
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• 제18권2호
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• pp.1-9
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• 2004

Objectives: The objective of this study is to assess the clinical effect of Gagamjeonsibaekchul-san on child diarrhea. Methods: This clinical study was carried out with 42 cases(31male, 11female) of children aged 0 to 14 years old who visited the Department of Pediatrics, Dongguk University Bundang Oriental Hospital and were diagnosed as the diarrhea. Assessments were made with reference to sex, age, the duration of symptoms and physical history. To assess the impact of Gagamjeonsibaekchul-san, the complicated signs, the duration of treatment, the correlation between the use of Gagamjeonsibaekchul- san, san and the duration of symptom were examined before and after the treatment. Results: There were 31 males and 11 females in the incidence by sex. It showed that males were more than females. The most numerous age group was 0-2(19) followed by 3-7 (11) and 9-12 (12). According to the duration of symptom, 12 children have symptom for 0-7 days, 10 for 8-14 days, 11 for 15-20 days, 4 for 22-28 days and 5 over 28 days. With regard to the physical history of the sample, 5 children had atopic dermatitis, 3 children had enteritis, 3 children had rhinitis, 2 children had tonsillitis, 1 child had otitis media, 1 child had asthma and 1 child had pneumonia. The children also had the complicated signs: 22 children had anorexia, 17 children had abdominal pain, 13 children had vomiting and 8 children had nausea in digestive organ. In addition 11 children had dizziness, 7 children had general weakness, 1 child had enuresis and 1 child had sweat in general symptoms. For the duration of the treatment, 14 children were treated for 7 days, 13 for 8-10 days, 8 for 11-14 days, 3 for 15-21 days, 2 for 22-28 days and 2 for 29-40 days. No distinct relationship between the use of Gagamjeonsibaekchul-san and the duration of the symptom was found. Conclusion: Gagamjeonsibaekchul-san is effective in the treatment of intestine mucous membrane and improves the function of digestive system. It is also an effective short-term treatment for child diarrhea.

• 대한한방소아과학회지
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• 제18권2호
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• pp.11-11
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• 2004

Objectives: The objective of this study is to assess the clinical effect of Gagamjeonsibaekchulsan on child diarrhea. Methods: This clinical study was carried out with 42 cases(31male, 11female) of children aged 0 to 14 years old who visited the Department of Pediatrics, Dongguk University Bundang Oriental Hospital and were diagnosed as the diarrhea. Assessments were made with reference to sex, age, the duration of symptoms and physical history. To assess the impact of Gagamjeonsibaekchulsan, the complicated signs, the duration of treatment, the correlation between the use of Gagamjeonsibaekchul- san and the duration of symptom were examined before and after the treatment. Results: There were 31 males and 11 females in the incidence by sex. It showed that males were more than females. The most numerous age group was 0-2(19) followed by 3-7 (11) and 9-12 (12). According to the duration of symptom, 12 children have symptom for 0-7 days, 10 for 8-14 days, 11 for 15-20 days, 4 for 22-28 days and 5 over 28 days. With regard to the physical history of the sample, 5 children had atopic dermatitis, 3 children had enteritis, 3 children had rhinitis, 2 children had tonsillitis, 1 child had otitis media, 1 child had asthma and 1 child had pneumonia. The children also had the complicated signs: 22 children had anorexia, 17 children had abdominal pain, 13 children had vomiting and 8 children had nausea in digestive organ. In addition 11 children had dizziness, 7 children had general weakness, 1 child had enuresis and 1 child had sweat in general symptoms. For the duration of the treatment, 14 children were treated for 7 days, 13 for 8-10 days, 8 for 11-14 days, 3 for 15-21 days, 2 for 22-28 days and 2 for 29-40 days. No distinct relationship between the use of Gagamjeonsibaekchul-san and the duration of the symptom was found. Conclusion: Gagamjeonsibaeichul-san is effective in the treatment of intestine mucous membrane and improves the function of digestive system. It is also an effective short-term treatment for child diarrhea.

• 인터넷정보학회논문지
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• 제15권2호
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• pp.73-85
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• 2014

국내 대학생을 대상으로 페이스북의 개인정보 공개 현황을 살펴보고 개인정보 공개에 영향을 미치는 요인을 살펴보았다. 페이스북의 개인정보 공개 현황은 프로파일의 정보를 토대로 개인정보 공개여부와 공개 범위, 두 측면에서 분석됐다. 개인정보 공개에 영향을 미치는 주요 변인은 페이스북 프라이버시 염려, 사회적 관계 유지 동기 등이 고려됐으며 성별, 이용기간, 이용시간 역시 분석에 포함됐다. 서베이 분석 결과, 페이스북 프라이버시 염려는 이용자에 관한 프라이버시 염려, 시스템에 관한 프라이버시 염려로 구분됐으며 개인정보 공개와 공개범위를 각각 종속변인으로 하는 회귀분석을 실시하여 주요변인의 영향력을 분석했다. 연구결과, 개인정보 공개정도의 경우는 성별, 이용기간, 사회적 관계 유지 동기에 의해 설명되며 개인정보 공개 범위는 이용기간, 페이스북 이용자에 의한 프라이버시 염려에 의해 설명되는 것으로 관찰됐다. 흥미로운 분석 결과는 공개정도 분석결과에서 사회적 관계 유지 동기가 페이스북 시스템에 의한 프라이버시 염려보다 우선하는 것으로 관찰된 점이다. 이에 대한 함의를 실었으며 페이스북 국내 이용자의 개인정보 공개 현황을 공개정도와 공개범위에 따라 항목별로 분석해, 이용자의 개인정보 공개와 페이스북 이용을 통한 사회적 관계와의 관련성을 유추하고자 했다.

• 한국멀티미디어학회논문지
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• 제24권8호
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• pp.1178-1183
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• 2021

Based on the camera movement on image expression and grammar, this study intended to analyze the characteristics of image expression filmed and broadcasted by drones. This study analyzed drone images using the movement characteristics of existing video cameras as a coding nomenclature. These were intended to examine the differences from existing video grammar and their implications. This study conducted a content analysis using the entire population of drone news footage broadcast for four years in 2015, 2016, 2017 and 2018 by TV Chosun. The size of the screen, camera work, duration of the shot, camera angle, etc. were selected and analyzed. As a result, the drone camera work showed that it uses the most dolly shots in the case of camera movement, followed by the drone camera movement in the order of pan and tilt shots. For zoom, the frequency of use was the smallest. In addition, this study analyzed the size of the screen, duration of the shot, and camera angle of drone. Analysis shows that drones use certain camera movements most frequently, and unlike grandiose modifiers such as "extension of human gaze," drone remains as a supplementary means to enhance the traditional media expression.

• 한국양식학회지
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• 제12권1호
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• pp.71-77
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• 1999

The potential utility of injection media (sucrose, PEG, and liposome) was demonstrated for direct gene transfer into olive flounder (Paralichthys olivaceus) muscles. Based on the use of sucrose (final cone. 20%), PEG 8,000 (final cone. 10%) or liposome (twice us of DNA injected), the present injection strategy significantly improved the level of transgene expression as well as persistent duration of expression. The increased amounts of expression in DNA injection with sucrose, PEG, and liposome were as high as from 2.1 to 4.9-folds of conventional TE-based DNA injection. The best result was obtained from injections of liposome-encapsulated DNA in which the expression was detectable at least 32 days after injection when compared to only 8-16 days from TE-based injections.

• 한국정보과학회논문지:정보통신
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• 제27권2호
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• pp.123-130
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• 2000

멀티미디어 동기화의 주요 관심은 미디어내 동기화에서의 지터와 미디어간 동기화에서의 스큐를 어떻게 해결하는 것인가이다. 멀티미디어 응용 소프트웨어를 효과적으로 개발하기 위해서 시간적 미디어와 공간적 미디어를 혼합하여 표현할 수 있는 멀티미디어 동기화 모델을 제안한다. 제안한 논문은 미디어간 동기화에 대한 QoS 처리를 위하여 네가지 파라미터를 이용하였고, 상대적인 지속시간 알고리즘과 지터 보상시간 알고리즘을 제시하였다. 그리고 키 매체가 손상이 되었을 때 키 매체의 최대 지연 지터 값만큼 기다림으로써 키 매체 이외의 매체에 최대 지연 지터 값만큼 추가적으로 재생할 수 있도록 하였다. 최대 지연 지터 값의 적용은 서비스 품질을 향상시키는 결과를 가져왔다.