• 한국컴퓨터정보학회논문지
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• 제22권1호
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• pp.123-134
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• 2017

The ability to use information technology has become increasingly important as technological advances continue to sweep through the computing world, and education for improving computational thinking has become globally instituted. In South Korea, informatics subjects have been modified in the 2015 curriculum and are now compulsory in primary and secondary education. However, despite substantial financial investment and numerous studies promoting informatics education, there continues to be a serious lack of pre-service teachers capable of teaching computational thinking. This study investigated pre-service teacher programming education using App Inventor, their perceptions of App Inventor, and how use of the program affected teacher problem-solving abilities and self-efficacy. In the pre-test, the control group and experimental group showed no statistically significant difference; however, the post-test revealed that the two groups showed statistically significant differences in problem-solving skills and self-efficacy. The participants initially showed interest in using App Inventor; however, after practice-teaching and project-based learning, the participants demonstrated a growing negativity toward the program when they made errors and the functional limits of App Inventor became apparent. Although most participants stated that they would not use App Inventor in their classes, the positive statistically significant differences in problem-solving skills and self-efficacy indicate that this study could be utilized as a basis for building a teaching-learning program using App Inventor and creating an educational plan for teaching computational thinking.

• 대한간호학회지
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• 제50권2호
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• pp.242-254
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• 2020

Purpose: The purpose of this study was to examine the effects of smart-phone app-based walking exercise programs for taxi drivers on self-efficacy and outcome expectations for exercise, health-related quality of life, walking as an exercise, and physiological indexes. Methods: A nonequivalent control group with a pre-post-test design was used. The subjects were recruited in G metropolitan city. Subjects were assigned to the experimental (n=31) or control groups (n=30). The smart phone app-based walking exercise program consisted of educations via the app, twelve short message services, and one individual telephone counseling session, which was spread over 12 weeks. Results: Self-efficacy, outcome expectations, and health-related quality of life had significantly higher pre-post test differences in scores in the experimental group. Additionally, blood pressure, body mass index, and waist circumference had significantly decreased prepost-test difference levels in the experimental group. Walking as an exercise (which consisted of days walked, number of steps walked, and amount of time walked) had significantly increased in the experimental group after 7~12 weeks in the period following the intervention program rather than 1~6 weeks after the program. Conclusion: The smart phone app-based walking exercise program based on the self-efficacy theory demonstrates a significant effect on improving self-efficacy, outcome expectations physical activities, and health-related quality of life for taxi drivers. Therefore, it is recommended to actively use the program as a tool to promote self-efficacy, physical activities, and health behaviors in taxi drivers.

• Korean Circulation Journal
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• 제52권10호
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• pp.785-794
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• 2022

Background and Objectives: Self-monitoring of blood pressure (SMBP) is a reliable method used to assess BP accurately. However, patients do not often know how to respond to the measured BP value. We developed a mobile application-based feed-back algorithm (SMBP-App) for tailored recommendations. In this study, we aim to evaluate whether SMBP-App is superior to SMBP alone in terms of BP reduction and drug adherence improvement in patients with hypertension. Methods: Self-Monitoring of blood pressure and Feed-back using APP in Treatment of UnconTrolled Hypertension (SMART-BP) is a prospective, randomized, open-label, multicenter trial to evaluate the efficacy of SMBP-App compared with SMBP alone. Patients with uncomplicated essential hypertension will be randomly assigned to the SMBP-App (90 patients) and SMBP alone (90 patients) groups. In the SMBP group, the patients will perform home BP measurement and receive the standard care, whereas in the SMBP-App group, the patients will receive additional recommendations from the application in response to the obtained BP value. Follow-up visits will be scheduled at 12 and 24 weeks after randomization. The primary endpoint of the study is the mean home systolic BP. The secondary endpoints include the drug adherence, the home diastolic BP, home and office BP. Conclusions: SMART-BP is a prospective, randomized, open-label, multicenter trial to evaluate the efficacy of SMBP-App. If we can confirm its efficacy, SMBP-App may be scaled-up to improve the treatment of hypertension.

• Journal of Information Technology Applications and Management
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• 제26권3호
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• pp.99-120
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• 2019

The purpose of this study is to provide information necessary for establishing a new strategy for customer service improvement by deriving factors affecting user satisfaction and continuous use intention of mobile app service user characteristics, system characteristics, and social characteristics. The results of this study are summarized as follows. First, reliability, innovation, familiarity, convenience, and self-efficacy among the characteristics of mobile app are analyzed as factors that have the greatest influence on user's perceived usefulness. Second, convenience, mobility, and visibility are some of the characteristics of mobile app service. Third, identity, security, and expectation agreement among mobile app service characteristics are analyzed as negative factors that do not affect users' perceived usefulness. Fourth, interactivity, familiarity, and self-efficacy among the characteristics of mobile app service were analyzed as positive factors that have the greatest effect on user's perceived ease of use. Fifth, reliability, mobility, visibility, and convenience among mobile app service characteristics are analyzed as factors that have some positive effects on perceived ease of use of app users. Sixth, identity, innovation, and security among the characteristics of mobile app service are negatively influenced by mobile app users' perceived ease of use. Seventh, the perceived usefulness of mobile app users is analyzed as a factor that has a very positive effect on user satisfaction. Eighth, the perceived ease of use of mobile app users is analyzed as a factor affecting perceived usefulness positively. Ninth, the perceived ease and expectation of mobile app users are positively influenced on user satisfaction. The tenth, the perceived usefulness of the mobile app users was analyzed as a factor having a very positive influence on the persistent intention to use. For the eleventh, the perceived ease of use of mobile app users was analyzed as a factor having a positive effect on the persistent intention to use. The twelfth, mobile app user satisfaction was analyzed as a factor having a very positive effect on the persistent intention to use.

• 디지털융복합연구
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• 제13권7호
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• pp.137-145
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• 2015

스마트폰의 건강 관리 및 진단 기능은 모바일 헬스라 불리며 가장 혁신적인 분야로 받아들여지고 있으며, 웨어러블 기기와의 결합은 향후 가장 유망한 산업으로 예측되고 있다. 그러나 기술의 발전 속도에 비해 소비자들의 수용 및 활용은 아직까지 미비한 수준이다. 본 연구는 건강 관련 앱에 대한 선행연구를 통해 앱과 연동되어 활용이 가능한 웨어러블 기기의 사용의도를 대학생을 대상으로 검증코자 했다. 특히 건강 관련 앱의 사용 효능감, 사용의도, 만족도가 웨어러블 기기의 사용 의도에 어떻게 영향을 미치는지 구조방정식 모델을 통해 분석하였다. 분석결과, 건강 관련 앱의 사용 효능감은 건강 관련 앱 만족도와 건강 관련 앱의 지속사용의도에 직접적인 영향을 미쳤고, 앱 만족도는 건강 관련 앱 지속사용의도와 웨어러블 기기의 사용의도에 유의미한 영향을 미쳤다. 건강 관련 앱 지속사용의도 또한 웨어러블 기기의 사용의도와 통계적으로 유의미한 관계가 있음이 밝혀졌다. 이 같은 결과는 건강 웨어러블 기기의 성공적 확산을 위해서는 선행 요소로 건강 관련 앱의 사용 효능감, 만족도, 앱의 지속사용의도가 중요하게 고려되어야 함을 시사한다.

• 정보교육학회논문지
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• 제21권1호
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• pp.13-22
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• 2017

초등정보영재교육에 있어서 최근에 강조되고 있는 사안 중 하나는 지식기반 사회를 이끌어갈 정보 분야에서의 창의적 인재의 육성에 있다. 이와 함께 학습자에게는 새롭게 제시되는 문제 상황들을 해결하기 위해 고차원적인 지적능력과 문제해결능력 신장이 더욱 요구되고 있다. 본 연구는 초등정보영재 학생들에게 적용 가능한 앱 인벤터 교육 프로그램을 개발 적용 후 초등정보영재 학생들의 문제해결력 및 자기효능감, 프로그래밍 성취도에 미치는 효과를 검증하고자 하였다. 연구 목적 달성을 위하여 초등정보영재 학생들 수준에 적합한 앱 인벤터 교육 프로그램의 교육과정을 설계하였으며 설계한 프로그램을 렌줄리(Renzulli)의 심화학습 3단계 모형을 변형한 교수 학습 모형을 통해 적용하였다. 초등정보영재 20명을 대상으로 5주간 15차시에 걸쳐 교수 학습활동을 진행하였으며 그 결과 앱 인벤터를 활용한 프로그래밍 교육이 초등정보영재 학생들의 문제해결력, 자기효능감 향상에 긍정적인 효과를 미치는 것으로 나타났으며 프로그래밍 개념과 알고리즘을 이해하는데 효과가 있음을 확인할 수 있었다.

• 디지털융복합연구
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• 제16권7호
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• pp.231-241
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• 2018

스마트폰을 활용한 건강관리는 시간과 공간에 제약을 받지 않아 대학생들의 건강관리를 위한 좋은 방안이 될 수 있다. 본 연구는 대학생들을 대상으로 다이어트와 식생활관련 앱을 2주일간 사용하도록 한 후 앱 효능감과 평가를 통해서 앱 활용성 개선 방안을 모색하였다. 연구결과 앱 효능감과 지속적인 사용의지가 낮아 현재 개발된 앱들이 다이어트와 식생활 개선의지에 크게 영향을 미치지 못하고 있는 것으로 나타났다. 앱 평가점수는 $3.12{\pm}0.85$였으며, 앱 평가 요인 중 편리성과 콘텐츠에 비해 유용성과 커뮤니티요인이 상대적으로 낮았다. 특히 콘텐츠와 커뮤니티는 성별에 따라, 콘텐츠와 편리성은 BMI와 다이어트 경험에 따라 유의적인 차이를 보였다. 앞으로 대학생의 니즈와 특성을 고려하여 앱의 유용성을 높이고 social networking을 강화할 수 있는 방안들이 더 모색되어야 할 것으로 사료된다.

• 보건행정학회지
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• 제22권2호
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• pp.249-262
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• 2012

The purpose of this study is to investigate the determinants of intent to use the medical-application(M-APP) of smart phone of nurses working at the nursing department of two university hospitals in Korea. The independent variables used in the study are performance expectancy, effort expectancy, social influence, facilitating condition, attitude toward using technology, self efficacy, anxiety, ability to use a smart phone easily and socio-demographic characteristics. The sample used in the study consisted of 378 nurses selected from two university hospitals located in Seoul and Wonju, Korea. Data were collected with self-administered questionnaires and analyzed using multiple regression analysis. The results of this study revealed 5 independent variables of attitude toward using technology, self efficacy, anxiety, ability of using APP and interest in smart phone have the significant effect on the intent to use the M-APP. The results imply that the hospital administrators and nursing managers should try to give more chances to learn the skills of using M-APP, provide sufficient resources and establish the stable hospital information system in order for their employees to use the M-APP more easily at their working places.

• 대한간호학회지
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• 제54권2호
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• pp.250-265
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• 2024

Purpose: This study aimed to develop an app-based self-management program based on the transtheoretical model (TTM) for breast cancer survivors' exercise practice, as well as to investigate the program's effects on the stage of change for exercise, exercise self-efficacy, exercise decisional balance, exercise amount, and body composition. Methods: This non-randomized controlled study included 52 participants (26 in each of the experimental and control groups, respectively). An app-based self-management program based on the TTM was conducted with the experimental group for a 12-week period. The program comprised three components: individual coaching for each stage of change for exercise based on TTM, amount of exercise and body composition monitoring, and online self-help meetings. Results: Compared with the control group, the experimental group had significantly higher stages of change for exercise (p < .001), exercise self-efficacy (p < .001), exercise decisional balance (p = .002), exercise amount (p < .001), and body composition (body weight [p = .006], body mass index [p = .005], and body fat percentage [p = .010]) immediately and four weeks after the intervention. Conclusion: An app-based self-management program based on the TTM improves exercise behaviors in breast cancer survivors and provides physical benefits.

• 한국IT서비스학회지
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• 제22권4호
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• pp.141-157
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• 2023

The present work aimed to present the development of 'Funt', the augmented reality-based digital app as an educational tool for foreign language learning. Our work further evaluated the learning efficacy of the tool by the assessment of the three dependent measures including learning motivation, learning satisfaction, and learning involvement. With a learning app of 'Funt', students can use AR app to access recognition-based or location-based experiences such that any objects, artifacts, or media appear to be in the app. Students are then able to interact with the digital content by manipulating it to learn more about it. Students's engagement should also increase when they create their own experience in AR to demonstrate their understanding of a particular concept or words. Learning effects were evaluated on survey data collected from a hundred respondents aging six to nine years. One-group design for pre-test and post-test was utilized to examine the differences of learning efficacy by comparing the non-'Funt' group and the Funt group scores. A pairwise t-Test was performed for pairwise comparisons between two learning groups. The results indicate that the 'Funt' group scored significantly higher than the non-'Funt' group in the measures of learning motivation, learning satisfaction, and learning involvement. Overall, our results suggest that 'Funt' attracted the students' attention, provided them with a fun context to learn English vocabulary, and develop positive motivation and satisfaction towards vocabulary learning through AR technology.