• Child Health Nursing Research
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• 제30권2호
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• pp.87-96
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• 2024

Purpose: The rising prevalence of smartphone overdependence among adolescents and its detrimental impact on mental health have become a growing concern. This study aimed to investigate the association between smartphone overdependence and the mental health of Korean adolescents. Methods: Participants were drawn from the 16th Korea Youth Risk Behavior Web-based Survey conducted in 2020. The dependent variable as smartphone overdependence, while the main exposure of interest was mental health, encompassing generalized anxiety disorder (GAD), perceived stress, sources of perceived stress, perceived loneliness, and perceived depressive symptoms. The study employed the Rao-Scott chi-square test and multiple logistic regression using IBM SPSS version 26.0. Results: The participants comprised 54,948 adolescents aged 13 to 18 years. Among them, 25.1% (n=13,775) were categorized as smartphone overdependence group. Specifically, 20.3% of adolescents who reported GAD ≥10 and 22.5% of those who reported experiencing high levels of perceived loneliness were identified as smartphone overdependent. The GAD increased a risk of smartphone overdependence by 2.61 times (95% confidence interval [95% CI]: 2.46-2.77). Perceived loneliness was associated with 1.98-fold (95% CI: 1.87-2.09) increased risk of smartphone overdependence. Additionally, conflict with peers was found to increase the risk of smartphone overdependence by 4.63-fold (95% CI: 3.89-5.52), followed by conflict with parents (odds ratio [OR]: 4.52, 95% CI: 3.84-5.31), and family environment (OR: 4.52, 95% CI: 3.75-5.46). Conclusion: The findings underscore a significant association between smartphone overdependence and mental health in Korean adolescents. Healthcare services to improve their emotional coping and interpersonal skills are necessary.

• International journal of advanced smart convergence
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• 제6권1호
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• pp.44-49
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• 2017

In the modern technology era, it is possible to connect objects and the internet anytime and anywhere through IoT of hyper-connected society. Accordingly, a smart shopping cart was designed and realized by applying IoT. Therefore, this paper builds the IoT shopping cart system according to the trend of IoT environment.. When RFID is installed in the Arduino and the tagged item is inserted into the IoT shopping cart, the product information and price are displayed on the Arduino linked Raspberry Pi. We built a web server on the Raspberry Pi to handle this data, and built an App on the smartphone to implement the IoT shopping cart environment. Consumers can receive pricing and product information through smartphone apps through raspberry pie, can make quick calculations through smartphone, and provide various information to consumers through apps.

• 산경연구논집
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• 제9권12호
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• pp.31-43
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• 2018

Purpose - Smartphone shopping malls provide customers with a variety of tangible and intangible services including web sites, web design, use convenience, information for products and shopping and various after services. Accordingly, it is needed to expand and classify service qualities based on the various services provided by smartphone shopping malls, and then analyze path structures of smartphone shopping malls' qualities → customer satisfaction → behavioral intention. The purpose of this study is to categorize the qualities of smartphone shopping mall users based on the e-SERVQUAL by Lee(2002) and the SERVQUAL by Parasuraman et al.(1988, 2005), the smartphone shopping malls' service qualities based on service quality of smartphone shopping malls used in the previous use studies, and the Website quality factors of service industry and to analyze path structure of smartphone shopping mall's qualities → customer satisfaction → behavioral intention on college students in order to confirm the system of smartphone shopping malls' qualities. Research design, data, and methodology - This study's survey was carried out on the college students of university located in northeastern of Seoul. It was from December 7 - 15, 2017, and a total of 240 questionnaires were distributed, with 228 collected. Of them, effective questionnaires used in the final study were a total of 201 except 27 that couldn't be used. In this study, empirical analysis was done with factor analysis, correlation analysis, multiple regression analysis, simple multiple regression analysis and moderating regression analysis by using Statistics Package SPSS18.0. Results - The study results are as follows: First, smartphone shopping malls' qualities were classified into six categories like customer system quality, Web design quality, convenience quality, information-offering quality, service quality, and product quality. Second, it showed that system quality, Web design quality, and information-offering quality had a positive impact on customer satisfaction, respectively. Third, it suggested that quality factors of smartphone shopping mall users had a positive impact on customer satisfaction in the order of quality, information-offering quality, system quality and Web design quality. Finally, it showed that customer service quality, product quality, and convenience quality did not have a positive impact on customer satisfaction. In addition, it said that customer satisfaction of smartphone shopping mall users had a positive impact on behavioral intention and thereby, the higher the customer satisfaction was, the higher the relations between reuse intention and recommendation intention were. Meanwhile, moderating regression analysis showed that trust did not have moderating effect in the relations between customer satisfaction and behavioral intention. The above study revealed that smartphone shopping malls' qualities were classified into six categories and it was possible to generalize after empirical analysis was made in the path structure. Conclusions - Smartphone shopping mall users consider usefulness of obtaining shopping information and quality on quick and abundant shopping information more important than access environment of smartphone shopping malls and kind services of smartphone shopping mall managers. Thereby, smartphone shopping mall marketers need to take service qualities like system quality and information-offering quality into more consideration.

• 한국정보통신학회논문지
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• 제15권3호
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• pp.597-604
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• 2011

현재 제공되고 있는 다양한 스마트폰 플랫폼은 효율적인 애플리케이션 개발을 어렵게 하고 있다. 이 문제를 해결하기 위하여 스마트폰 환경에 미들웨어를 도입하는 연구가 이루어지고 있다. 미들웨어의 도입은 서버 시스템과 스마트폰 플랫폼의 상호 운용성을 높여 효율적으로 스마트폰 애플리케이션을 개발하고 관리할 수 있도록 지원한다. 그러므로 급속하게 확장하는 스마트폰 환경에 능동적으로 대응하기 위하여 스마트폰 미들웨어 개발은 필수가 되고 있다. 본 연구에서는 다양한 스마트폰 플랫폼 환경에서 새로운 애플리케이션 서비스를 개발하고 유지하는데 소요되는 비용과 시간을 최적화할 수 있도록 스마트폰 미들웨어를 설계 및 구현하였다. 그리고 구현된 스마트폰 미들웨어의 성능 및 활용성을 검토하기 위하여 대학환경의 스마트폰 응용과 캠퍼스 트위터를 개발하였다.

• 한국정보통신학회논문지
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• 제17권10호
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• pp.2294-2300
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• 2013

최근 들어 스마트폰의 보급과 활용이 급증함에 따라 스마트폰관련 연구는 IT분야의 중요한 연구과제중 하나가 되었다. 게임을 비롯한 수많은 어플리케이션이 개발되고 있으며, 지속적으로 많은 어플리게이션이 개발될 것이다. 기존의 많은 어플리케이션이 개발되었으나 우리나라의 전통놀이를 소재로 한 어플리케이션은 많지 않다. 본 연구에서는 우리나라의 전통놀이중 하나인 고누를 안드로이드 환경에서 개발하였다. 고누는 연령에 상관없이 즐길 수 있는 보드게임중 하나이다. 고누와 같은 전통문화와 관련된 어플리게이션이 개발되어 스마트폰환경에서도 우리나라 문화를 알릴 수 있는 계기가 되기를 기대한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권4호
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• pp.1757-1772
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• 2020

As the smartphone market becomes saturated, an innovative device equipped with new features is expected to appear soon in mobile communications. In particular, various possibilities were raised regarding the alternative technologies that can develop post-smartphones, which are differentiated from the current smartphones, as Korea commercialized the 5G infrastructure for the first time in the world. Under these circumstances, the Korean government announced the "5G+ Strategy for Realizing Innovative Growth" in April 2019, vowing to build an innovative industrial ecosystem quickly while creating various convergence services based on the 5G infrastructure. As described above, the policy importance of the alternative technologies that will develop post-smartphones is increasing, but the theoretical study on the technology evolution of post-smartphones has not been systematically conducted until now. This study reviewed the alternative technologies that can develop post-smartphones through documentary research, and data mining analysis was performed on the research result using actual data. The policy priority was also set quantitatively for the alternative technologies of post-smartphones in order to determine the alternative post-smartphone technology that the government should focus on given the constraint of limited resources. As a results, autonomous vehicle(43.68%) was found to be most important, followed by artificial intelligence(17.4%) and Internet of Things(13.1%), among alternative technologies that could develop into the post-smartphone.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권2호
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• pp.723-743
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• 2016

Indoor positioning is considered an enabler for a variety of applications, the demand for an indoor positioning service has also been accelerated. That is because that people spend most of their time indoor environment. Meanwhile, the smartphone integrated powerful camera is an efficient platform for navigation and positioning. However, for high accuracy indoor positioning by using a smartphone, there are two constraints that includes: (1) limited computational and memory resources of smartphone; (2) users' moving in large buildings. To address those issues, this paper uses the TC-OFDM for calculating the coarse positioning information includes horizontal and altitude information for assisting smartphone camera-based positioning. Moreover, a unified representation model of image features under variety of scenarios whose name is FAST-SURF is established for computing the fine location. Finally, an optimization marginalized particle filter is proposed for fusing the positioning information from TC-OFDM and images. The experimental result shows that the wide location detection accuracy is 0.823 m (1σ) at horizontal and 0.5 m at vertical. Comparing to the WiFi-based and ibeacon-based positioning methods, our method is powerful while being easy to be deployed and optimized.

• 문화기술의 융합
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• 제8권6호
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• pp.23-30
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• 2022

이 연구는 부모의 스마트폰 이용과 자녀의 스마트폰 이용의 관계를 살펴보기 위한 탐색적 연구로, 부모와 자녀의 스마트폰 이용시간이 유의미한 상관관계에 있는지 확인하고자 했다. 이를 위하여 정보통신정책연구원의 '한국미디어패널조사' 11차년도 자료를 활용하여 실증적 분석을 실시했다. 연구 결과, 부모가 스마트폰을 오래 이용하는 경우 자녀 역시 스마트폰을 오래 이용하는 것으로 나타났다. 이러한 정적 상관관계는 스마트폰 전체 이용 시간과 게임 이용시간에서 확인할 수 있었다. 이와 같은 연구 결과는 부모와 자녀의 스마트폰 이용 양식이 가족 이라는 단일 체계 내 구성원으로서 유사성을 보이고 있음을 시사한다. 이 연구는 개인의 미디어 이용을 가족, 미디어 이용 환경을 통해 설명하기 위한 기초 자료를 제공한다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 추계학술대회
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• pp.219-222
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• 2013

최근 스마트폰의 급격한 확산은 우리 일상생활에 패러다임을 바꾸어 놓고 있다. 애플의 아이폰이 출시되면서 스마트폰에 대한 관심이 폭발적으로 증가하고 스마트폰을 활용하는 인터넷 기반 서비스가 활성화되고 있다. 스마트폰 이용자는 경제활동 인구의 99% 이상이 사용하고 있으며 초기 형성단계를 지나 포화상태에 도달한 것으로 전문가들은 내다보고 있다. 스마트폰은 PC와 유사한 수준의 고기능 환경구현이 가능한 범용 운영체제를 탑재하고 있다. 또한, 다양한 응용프로그램을 설치하거나 삭제할 수 있는 확장성이 뛰어난 이동통신 단말기이다. 스마트폰과 같은 새로운 정보기술이 등장하는 경우 이의 사용에 영향을 미치는 요인을 찾는 것은 연구자에게 있어 매우 중요하며 흥미로운 주제이다. 이러한 시점에서 스마트폰의 행위의도에 미치는 요인을 규명하는 연구는 상당히 중요하다. 본 연구는 2008년 이후 국내 학술지에 게재된 연구 중 스마트폰 관련된 연구로 설정된 총 99편의 연구논문을 대상으로 하였다. 행위의도와 관련된 실증연구의 논문이 76편을 리뷰 하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.287-290
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• 2011

스마트폰에서 동기화 기능은 디폴트(default)값으로 설정되어 있다. 동기화가 설정된 스마트폰은 스마트폰 전용 케이블을 이용해 PC에 연결되면 자동적으로 스마트폰 데이터가 백업되어 저장된다. 이 백업 데이터는 일반적인 기술로는 내용을 분석하기가 어려워서 포렌식 기술을 적용하여야 범죄용의자의 정보를 알아낼 수 있다. 따라서 본 논문에서는 동기화 스마트폰의 백업 데이터에 대한 포렌식 분석을 통한 포렌식 증거자료에 대한 연구를 한다. 실험실 환경에서 스마트폰에 개인 금융정보를 보내고, 스마트폰을 훼손하였다고 가정하에 실험을 한다. 스마트폰의 백업 데이터를 포렌식 툴을 사용하여 개인 금융정보 및 범죄 연관 데이터를 분석하고, 포렌식 기술을 적용하여 법정 증거자료로 채택되도록 연구한다. 본 논문을 통해 스마트폰 포렌식 분석에 대한 기초자료로 활용 할 수 있을 것이다.