• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.5
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• pp.599-604
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• 2019

This study examined how the characteristics of smartphone affect the functional performance of smartphones. In particular, this study focused on an understanding of the correlation between smartphone functional factors and usage habits. Functionality is defined as 11 kinds of functional elements. The characteristics of the smartphones were defined as the hardware characteristics and the user habits characteristics. Eighty subjects were organized to collect actual data by the smartphone function. The actual time required to perform each function was measured and observed five times for each functional element. Regression analysis was performed using Minitab ver.14 by classifying the measured values of the functional elements as dependent variables, the hardware characteristics collected through the questionnaire, and the user's usage habits as 12 independent variables. Overall, it is difficult to conclude that demographic and hardware characteristics of smartphone users have a significant effect on the performance. On the other hand, the variables related to smartphone usage habits have had a great impact on the performance of smartphone tasks, and as a result, the task execution time has increased. In simple input variables or viewing variables, the effects on usability was relatively small, but in all active variables, the execution time increased 10% - 30% in all tasks except for phone calls, seeking phone numbers, and dictionary search. Thus far, if the smartphone user interface has been provided uniformly in a large and simple manner, users with various usage habits can be utilized even if the input method and task processing method are more complicated and various interface types are provided.

• Journal of Digital Convergence
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• v.10 no.9
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• pp.175-184
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• 2012

The aim of this study is to inquire into the influential relationship between perceived characteristics and psychological attitude toward smart phone in relation with the smart phone. This study conducted a questionnaire survey targeting domestic college students who are using the smart phone in an effort for an empirical test of the research model. The theoretical implications of this study laid foundation for doing research on the behavior of perceived characteristics and psychological attitude toward technology, and supplied a clue to diverse, in-depth research works on the further smart phone. The study-suggested practical implications are as follows: First, it is required that the usefulness and easy of use of the smart phone should be reinforced in order to form a positive attitude toward the smart phone. Second, the sense of dependence on the smart phone has an influence on user satisfaction.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.199-210
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• 2016

This study was conducted to examine the mediation effect of narcissistic personality traits and schizophrenic personality traits on the relationship between smartphone addiction and relational aggression of middle school girls. Data from 378 girls in Kyungki and Chungchoeng areas were analyzed. Main results were as follows. First, smartphone addiction showed significant positive correlations with narcissistic personality traits, schizophrenic personality traits and relational aggression. Both personality traits also showed positive relationship with relational aggression. Second, narcissistic personality traits fully mediated the relationship between smartphone addiction and reactive relational aggression. Third, schizophrenic personality traits partially mediated the relationship between smartphone addiction and relational aggression. Finally, clinical implications for adolescent girls at high risk of smartphone addiction and suggestions for future studies were discussed.

• Journal of Digital Contents Society
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• v.14 no.2
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• pp.135-142
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• 2013

In this study, I research about extensions and changes of user experience by using smartphone from the point of conceptual metaphor based on embodied cognition and the remediation characteristics. The result of this study is as follow; The first, container schema and path schema as center image schema of the conceptual metaphor are a proper theories to be mapped user experience by using smartphone because of including embodied schema structure by human physical experience. The second, user experience of smartphone in the point of remediation is remediated by smartphone. And physical space is rededicated and interacted to behavior space by the user experience. The third, the conceptual metaphor of smartphone UX activate container chema through implicit interaction and has transparent immediacy to ingenerate existence of media. The forth, path schema that is activated from explicit interaction makes users to experience hypermediacy. Conceptual metaphor and remediation in this study could be used to theoretical framework and to explain new user experience from using smartphone.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.20 no.6
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• pp.67-81
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• 2010

As wide propagation of smartphones, e-commerce with smartphones increases rapidly. Such as transfer or stock trade systems. It has prospect that most of financial companies going to offer e-commerce systems via smartphones. And e-commerce via smartphones will be increased, hence the nature of smartphone that can be used whenever, wherever. However, legislation of e-commerce in Korea does not reflect these characteristics of smartphones, because it has set standards in regular PC. So that this study is security threat and feature of smartphones considering that the current legal system will use Certificate constraints, ensuring the safety of e-commerce and install security programs for protection of users, e-commerce responsible for the accident analysis has focused on the issues presented for this improvement.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.979-981
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• 2011

전체 모바일 시장에서의 스마트폰의 시장점유율이 빠른 속도로 증가하고 있는 가운데 스마트폰 보안 이슈에 대한 관심도 같이 증가되고 있으며, 스마트폰의 분실 및 도난으로 인한 피해의 대응책이 필요하다. 스마트폰의 특성상 휴대성 때문에 분실 및 도난시에 개인정보 유출 등의 2차적 피해가 커질 수 있다. 이러한 피해들을 최소화하기 위해 원격 동기화, 개인정보 접근 차단, 위치정보 송/수신, 원격 카메라 제어, 이벤트 로그 전송 등의 기능을 통해 스마트폰 내부에 저장되는 사용자의 개인정보의 유출을 방지하고 분실 및 도난된 스마트폰의 재습득 가능성을 증대시킬 수 있다. 본 논문에서는 이러한 스마트폰의 분실 및 도난에 대비하는 보안 원격제어 관리 시스템을 제안, 설계하고 구현한다.

• The Journal of Korean Academy of Sensory Integration
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• v.16 no.3
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• pp.1-10
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• 2018

Objective : The purpose of this study was to investigate smartphone addition and sensory processing character depend on gender for occupational therapy (OT) students, and to identify the correlation between smartphone addiction and sensory processing feature. Methods : Participants of this study were 168 (70 male/90 female) students majoring occupational therapy. Measurements in this study were a questionnaire about general information of subject, smartphone addiction scale, and adult/adolescent sensory profile. Data collection period was from November 2017 to March 2018. Methods for the data analysis included descriptive statistics, independent t-test and Pearson correlation of SPSS 22.0. Results : In term of the purpose of using smartphone, majority response was communication and gaming ranked in next. There were difference between male and female in the total smartphone addition, cyberspace-oriented relationship, withdrawal and tolerance. The result showed that all sensory processing are related with total smartphone addition (r = .236 ~ .603) for man. And for women, total smartphone addition is little related with the taste/smell processing (r= .290), visual processing (r= .324), touch processing (r= .214), low registration (r= .214), sensory sensitivity (r= .243), and sensory avoiding (r= .217). Conclusion : This study found that there is difference between male and female in terms of relation between smartphone addition and sensory processing feature according for occupational therapy students.

• The Journal of the Korea Contents Association
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• v.12 no.10
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• pp.365-375
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• 2012

This study aimed to survey the impact of smartphone overuse on upper extremity pain, anxiety, depression, and interpersonal relationships among college students. Subjects completed a structured questionnaire consisting of the Smartphone Addiction Inventory, the Musculoskeletal Symptom Checklist, the State-Trait Anxiety Inventory, the Beck Depression Inventory-II, and the Relationship Change Scale from May to June 2012. We analyzed the survey data from 525 responses, excluding unreturned or incomplete surveys. Data were analyzed using the $x^2$ test and t-test to determine the differences in smartphone overuse and its impact on upper extremity pain, anxiety, depression, and interpersonal relationships between two groups: the overuse and normal use groups. Moreover, Pearson's correlation coefficient was used to examine the correlation between smartphone overuse and upper extremity pain, anxiety, depression, and interpersonal relationships. The results placed 62 people (11.8%) in the smartphone overuse group. The extent of smartphone overuse was more severe among female than male college students, and longer time spent using smartphones per day was directly related to smartphone overuse. The smartphone overuse group evidenced higher shoulder pain than the normal use group did, but no differences were found in other sites of the upper extremities. State anxiety, trait anxiety, and depression were higher in the smartphone overuse group than in the normal use group. Subjects with a higher extent of smartphone overuse experienced increased state-anxiety, trait-anxiety, and depression. Moreover, subjects with higher state-anxiety, trait-anxiety, and depression scores were more likely to have poor interpersonal relationships. Therefore, early screening for smartphone overuse should be evaluated, because it can be useful in developing addiction prevention programs to improve posture, stress coping, positive mental health, and effective interpersonal relationships.

• Informatization Policy
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• v.21 no.4
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• pp.59-80
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• 2014

As usage of smartphone increases, it causes various social issues including smartphone addiction. This study, therefore, examined the impact of smartphone users' multitasking behaviors, satisfaction and flows on the smartphone addiction. Also, this research investigated the impacts of users' characteristics such as their polychronicity, innovativeness, and self-efficacy on their multitasking behaviors. The results of this study can be summarized as follows: users' polychronicity showed positive impact on their multitasking behaviors while innovativeness and self-efficacy did not. In addition, users' multitasking behaviors had significantly positive effects on satisfaction, flow and addiction. Users' satisfaction, however, did not show the direct impact on addiction while the positive impact on the flow, which in turn had direct effects on addiction. In sum, users' polychronicity and their multitasking behavior can be considered one of the most important predictors directly and indirectly through flow explaining smartphone addiction.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06b
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• pp.185-188
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• 2011

스마트폰의 대중화로 인해 사용자의 다양한 요구사항이 발생하고 있고, 스마트폰 용 어플리케이션에 대한 개발이 활발히 수행되고 있으나 하드웨어와의 밀접한 관계 및 재사용성의 요구를 반영하고 있지 못하므로 향후 수요를 감안하여 객체지향 개발방법론을 적용한 체계적인 접근이 필요하다. 본 논문에서는 대표적인 스마트폰 플랫폼인 안드로이드와 아이폰 플랫폼의 수명주기, 하드웨어, 어플리케이션 간의 관계를 통해 스마트폰 어플리케이션 개발절차를 도출하도록 시도하였으며, 객체지향 개발방법론 중에서 Reference Model 중심의 안드로이드 플랫폼과 Rich Client를 지원하는 아이폰 플랫폼에 각각 스마트폰 플랫폼에 준한 하드웨어 특성을 고려하여 특화된 CBD(Component Based Development)기반인 마르미-EM방법론과 서비스 기반의 어플리케이션을 지향하고 있는 MVC(Model-View-Control)패턴이 적용된 SaaS(Software-as-a-Service) 개발방법론을 적용하여 어플리케이션 개발 절차를 비교한다. 이를 통하여 개발방법론의 절차상의 차이점, 강점 및 보완 사항을 분석하고 방법론별 특징을 토대로 향후 보완점을 제안한다.