• Journal of Digital Contents Society
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• v.19 no.4
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• pp.631-637
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• 2018

In order to read newspaper articles, the use of paper newspapers is decreasing and smartphone are increasingly used. As a result, the number of news apps continues to increase. Many of the news apps in the Android Play Store fall into two categories. The first is an app that is developed by a specific newspaper company and distributes only the articles of the newspaper company. The rest is an app that shows a list of newspapers and shows the homepage when a newspaper is selected. In this paper, we have designed and implemented a Real-Time News app for collecting articles from many newspapers and providing them in real time. Newspapers provide up-to-date articles with RSS feeds. The server program stores them in the DB, and transmits the articles requested in the Real-Time News app in real time. In order to see the latest news, it is possible to collect the articles of each newspaper without visiting the websites of the various newspapers, and it is possible to reduce the mobile data usage used to access each website.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.10
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• pp.1375-1380
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• 2021

Korea's security response to application service app is still insufficient due to the initial opening of the public safety network. Therefore, preemptive security measures are essential. In this study, we proposed to establish a 'public safety network app security system' to prevent potential vulnerabilities to the app store that distributes app in public safety network and android operating system that operate app on dedicated terminal devices. In order for an application service app to be listed on the public safety network mobile app store, a dataset of malicious and normal app is first established to extract characteristics and select the most effective AI model to perform static and dynamic analysis. According to the analysis results, 'Safety App Certificate' is certified for non-malicious app to secure reliability for listed apps. Ultimately, it minimizes the security blind spots of public safety network app. In addition, the safety of the network can be secured by supporting public safety application service of certified apps.

• Clinics in Shoulder and Elbow
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• v.24 no.3
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• pp.156-165
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• 2021

Background: This study aimed to determine: the perspectives of the patient cohort that underwent telehealth consultation and shoulder rehabilitation during coronavirus disease 2019 (COVID-19) and the differences in the patients' perspectives with the two different telehealth video applications (apps) used in the study. Methods: This is a prospective study carried out during the COVID lockdown period of April to July 2020. Thirty consecutive patients from the orthopedics department of a tertiary institute in India underwent their first-ever session of a video app-based (Zoom or WhatsApp) telehealth consultation with shoulder rehabilitation exercises on a handheld mobile, tablet, or laptop device. After the virtual consultation, the patients were sent a validated telehealth usability questionnaire (TUQ) to evaluate their perspectives. Scores obtained from the TUQ were the primary outcome measure. Results: The study was completed by 30 patients (16 men and 14 women) with an average age of 56 years (range, 20-77 years). The patients who contacted us during the lockdown period with either a stiff shoulder or a conservatively treated shoulder fracture were included in the study. The average TUQ score was 13.6 (median, 14.5; range, 6-21) out of a maximum of 21 points. Eighty percent of the patients were satisfied and found the telehealth service useful. Use of the Zoom app scored significantly higher (median, 17; average, 15.6) than the WhatsApp app (median, 8.5; average, 9.6) (p=0.004). Conclusions: Patients who received telehealth consultation and shoulder rehabilitation were overall satisfied. Telehealth apps with advanced video calling features such as Zoom should be preferred for higher patient satisfaction.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06d
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• pp.268-270
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• 2012

IAP (In App Purchase) 컨텐츠는 스마트 기기의 앱 내부에서 진행되는 컨텐츠 구매로 최근 앱 스토어의 주요 수입원으로 떠오르고 있다. 많은 앱 개발사들이 사용자들이 쉽게 앱을 접할 수 있도록 앱 자체는 무료로 판매하고 주요한 기능이나 추가적인 기능을 IAP를 통해서만 구입하여 사용할 수 있도록 유도하고 있다. 이런 방식을 통해 사용자가 불법으로 앱을 다운로드 하더라도 추가적인 기능이나 컨텐츠를 이용하기 위해서는 IAP를 사용하여 대가를 지불하도록 유도하는 것이다. 그러나 앱 자체가 클라이언트 기능만을 수행하는 경우는 문제가 없지만 full-time으로 서버와 동기화를 해가며 동작하는 방식이 아닌 앱의 경우 IAP를 불법적으로 해킹하여 취득하는 것이 가능하다. 본 논문에서는 이러한 불법적인 IAP 컨텐츠 획득을 방지하기 위하여 full-time으로 서버와 동기화를 하지 않으면서도 IAP 컨텐츠를 보호하기 위한 메커니즘을 제안한다.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.237-238
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• 2015

ICT의 발전과 관광분야로의 확산은 정보 활용 제약의 완화를 가져왔으며, 관광객은 언제 어디서나 관광정보에 쉽게 접근할 수 있게 되었다. 특히 모바일 디바이스의 보급은 관광정보 전달수단으로서 모바일 애플리케이션의 중요성을 부각시키고 있다. 본 연구에서는 모바일 관광정보 애플리케이션 분석을 통해 그 유용성을 검증하고 콘텐츠 개선방안을 제시하고자 하였다. 분석결과 모바일 관광정보 애플리케이션은 제한적으로 이용되고 있는 것으로 나타났다. 따라서 미래의 관광정보 인프라는 통합된 관광정보를 제공하여 관광객의 피로도를 낮추는 한편, 정보제공자와 수용자 간 상호작용이 가능한 플랫폼 형태로 구축되어야 할 것이다.

• Journal of Industrial Technology
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• v.31 no.B
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• pp.99-105
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• 2011

Recently, smartphones have been widely used in wireless communications which caused severe data overload in cellular networks. Cellular companies consider increasing wireless data capacity in overloaded areas. Determining overloaded areas is mainly made from user reports which are currently collected by calling or simple apps by some active users experiencing overloads. Since the current reporting method is inconvenient and does not contain detail information about the overload conditions, and therefore is used by only some active users, the overloaded areas determined from the reports are not likely to be accurate. Therefore, we need a new reporting method which is convenient enough for even inactive users to willingly report the overload condition and which delivers detail information about the overloads. In this paper, we design and implement a measurement function of smartphone's WCDMA communication quality including overload condition and management system of mobile wireless communication networks about smartphones' communication quality.

• Journal of information and communication convergence engineering
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• v.18 no.1
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• pp.55-60
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• 2020

As personalized customer services create a society that emphasizes the personality of an individual, the number of product reviews and quantity of user data generated by users on the internet in mobile shopping apps and sites are increasing. Such product review data are classified as unstructured data. Unstructured data have the potential to be transformed into information that companies and users can employ, using appropriate processing and analyses. However, existing systems do not reflect the detailed information they collect, such as user characteristics, purchase preference, or purchase priority while analyzing review data. Thus, it is challenging to provide customized recommendations for various users. Therefore, in this study, we have developed a product recommendation system that takes into account the user's priority, which they select, when searching for and purchasing a product. The recommendation system then displays the results to the user by processing and analyzing their preferences. Since the user's preference is considered, the user can obtain results that are more relevant.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.678-679
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• 2019

In this paper, we developed a medical computer application for both disable children and adults in order to provide the chance to communicate easily with others. Although there are many mobile healthcare apps available nowadays, we believe that users should also have many options for choosing different types of healthcare programs developed for computers. That's why we have developed ConWis. This application helps a person with hearing loss, voice, speech, or language disorder to communicate easily with others. Through this software, hearing and understanding what is being said more clearly or to express thoughts become easier. To use this software, patient should input a sentence and it will be converted to audio speech using built-in voices for man or woman. In addition to that, it can convert voice that is received by microphone into text and display it on the screen.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.52-55
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• 2013

모바일 컴퓨팅은 모바일 디바이스의 사용 증가로 인해 연구가 활발히 진행되고 있는 분야이다. 스마트폰은 대표적인 모바일 디바이스로, 많은 앱들이 오픈 마켓을 통해 활발히 유통되고 있다. 고품질의 앱을 설계하기 위해서는 모바일 디바이스의 특징에 대한 이해와 제한적인 자원에 의해 발생할수 있는 문제들에 대한 효과적인 해결책이 필요하다. 본 논문에서는 모바일 디바이스의 역량을 정량적으로 분석하고 이를 기반으로 앱 설계시 발생할 수 있는 문제들을 효과적으로 대처하기 위한 설계 지침 제시 및 이를 기반으로 한 앱 설계 기법을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.272-275
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• 2010

스마트폰의 확산이 증대되고 있으며, 누구든지 모바일 앱을 개발할 수 있는 환경이 제공되고 있다. 모바일 앱을 개발하는 개인 개발자들은 접근성과 이해성이 좋고, 보안성이 고려된 표준 가이드를 적용하여 앱을 개발해야 한다. 이는 오류 발생률 감소 및 코드 수정에 소비되는 시간이 절약될 수 있는 모바일 앱을 개발하는데 도움이 된다. 하지만 개인개발자들을 위한 적절한 가이드가 존재하지 않는 실정이다. 본 논문에서는 개인 개발자들이 쉽게 접근 할 수 있으면서 보안성이 고려된 표준 가이드를 제시하기 위한 개발 방법론을 제시한다.