• 베이커리
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• no.9 s.362
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• pp.70-71
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• 1998

• 베이커리
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• no.12 s.365
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• pp.109-115
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• 1998

• 베이커리
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• no.2 s.355
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• pp.64-66
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• 1998

• The Optical Journal
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• s.132
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• pp.60-64
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• 2011

사진인들의 축제마당인 '2011 서울국제사진영상기자재전'이 4월21일부터 24일까지 나흘간의 일정으로 코엑스 본관 1층 A홀에서 성대하게 개최된다. 올해로 20회 째를 맞이하며 국내에서 개최되는 국제 규모의 사진 관련 행사 중 최대 규모를 자랑하는 이 전시회에는 삼성, 올림푸스, 소니, 니콘, 캐논, 파나소닉 등 메이저 카메라 업체가 대거 참가해 다양한 시연행사와 이벤트를 선보일 예정이다. 또한 출력장비, 사진 소프트웨어, 사진 액세서리, 사진 스튜디오 관련 장비 등을 한자리에서 봄으로써 최신 기술동항의 흐름 파악과 함께 참관객들에게 잊지 못할 즐거운 체험의 장을 선사할 예정이다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.3
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• pp.479-490
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• 2013

Recently, the number of attacks by malicious application has significantly increased, targeting Android-platform mobile terminal such as Samsung Galaxy Note and Galaxy Tab 10.1. The malicious application can be distributed to currently used mobile devices through open market masquerading as an normal application. An attacker inserts malicious code into an application, which might threaten privacy by rooting attack. Once the rooting attack is successful, malicious code can collect and steal private data stored in mobile terminal, for example, SMS messages, contacts list, and public key certificate for banking. To protect the private information from the malicious attack, malicious code detection, rooting attack detection and countermeasure method are required. To meet this end, this paper investigates rooting attack mechanism for Android-platform mobile terminal. Based on that, this paper proposes countermeasure system that enables to extract and collect events related to attacks occurring from mobile terminal, which contributes to active protection from malicious attacks.

• Journal of Digital Convergence
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• v.18 no.9
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• pp.181-190
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• 2020

The purpose of this study is to analyze the trends of wearable keywords using text mining methodology. To this end, 11,952 newspaper articles were collected from 1992 to 2019, and frequency analysis and bi-gram analysis were applied. The frequency analysis showed that Samsung Electronics, LG Electronics, and Apple were extracted as the highest frequency words, and smart watches and smart bands continued to emerge as higher frequency in terms of devices. As a result of the analysis of the bi-gram, it was confirmed that the sequence of two adjacent words such as world-first and world-largest appeared continuously, and related new bi-gram words were derived whenever issues or events occurred. This trend of wearable keywords will be useful for understanding the wearable trend and future direction.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.1002-1005
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• 2015

Mobile operating systems have been typically classified into Apple and Android. Samsung showed its own new mobile OS developing Tizen based on Linux kernel. Mobile operating system has developed a technology using low-power by itself because of the limitation of capacity of battery, a feature of mobile. Samsung Tizen OS has a low-power technology called Power Manager controling LCD states as users'inputs or time-out events occur. However, if users'input occurs frequently, energy consumption jumped before-and-after users'input because CPU clock is increased rapidly due to overhead increase for frequent LCD state changes. This paper proposes a mechanism to reduce the overhead for LCD state changes, when user's input is frequent, by adding a new state to the Power Manager the current Tizen OS is using. We have implemented the proposed mechanism at Tizen phone kernel layer in this paper and experimented the mechanism according to users' LCD touch inputs. The experiment shows that it is possible to decrease energy by reducing the CPU clock increase according to the frequent user's inputs.