• Journal of Internet Computing and Services
• /
• v.13 no.4
• /
• pp.33-43
• /
• 2012

Smart phones can be used in parking management to receive important notifications. An infrastructure based from such approach should consider message persistence which is currently supported through push notification systems. However, the broadcast method produces high overhead when sending notifications throughout the clients. This paper uses a filtering method to prevent unnecessary message overheads. The heuristic approach selects the mobile clients with corresponding preference values based on the notification tag values. The simulation result showed that the proposed filtering method was faster in re-establishing connections and had lower message overhead compared to conventional messaging frameworks.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.19 no.3
• /
• pp.153-162
• /
• 2009

When a private information security incident occurs, the people who own the information are not acknowledged about their information leakage until those affairs appear in public media. This research aims at developing a mobile alarm system for acknowledging suspicious events to the information owners. The mobile alarm system was designed considering the limited user interface of mobile terminal and concept of "personal information leakage message tree" is deployed. The message tree contains every possible situation about personal information leakage and the leaves of the tree has several choices that the information owner can select. This message tree concept enables each information owner to manager his or her information leakage situation by just pushing a few buttons of mobile device. The contribution of this paper is in design of a comprehensive alarm message tree and development of mobile alarm system containing the message tree concept.

• Proceedings of the Korea Society of Information Technology Applications Conference
• /
• 2007.11a
• /
• pp.103-103
• /
• 2007

• Proceedings of the Korean Information Science Society Conference
• /
• 2007.10a
• /
• pp.40-41
• /
• 2007

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2014.10a
• /
• pp.673-674
• /
• 2014

HL7은 병원 시스템 간 의료 정보 전달을 위해 활용되고 있는 국제 표준의 프로토콜로 현재 U-헬스케어 서비스에서는 클라이언트와 서비스 서버 간의 건강 정보뿐만 아니라 모든 정보 교환이 HL7 2.x 메시지를 통해 이루어진다. 그러나 최근 의료서비스 및 기술의 발전으로 각종 센서와 개인건강기기를 통해 측정된 생체 정보가 빠른 속도로 발생하고 있어 서비스 서버와의 정보 교환과정에서 처리속도와 데이터 크기에 관한 기존 HL7 표준 메시지 구조의 문제점이 발생하고 있다. 따라서 본 논문에서는 스마트 TV 웰니스 서비스를 대상으로 HL7 Coding 규약을 준용하며 서비스 서버와 HL7 표준 정보교환의 신속한 처리를 위한 HL7 메시지 구조의 개선 방안을 제시하고자 한다.

• Proceedings of the Korea Contents Association Conference
• /
• 2019.05a
• /
• pp.235-236
• /
• 2019

이 연구는 청력손실 예방 공익광고 메시지가 프레이밍 유형(긍정/부정)과 자기효능감 정보제공(유/무)에 따라 수용자의 청력손실 예방의도에 미치는 영향을 검증한다. 개별 참여자들의 개인적 특성으로 지각된 위험과 미래지향 시간관을 메시지 효과에 영향을 미칠 수 있는 변인으로 설정했다. 이를 통해 청력손실 예방에 대한 이해와 관심을 증진시키기 위한 캠페인을 진행할 때 메시지 전략측면과 실행의 효과면에서 메시지 내용의 표현방법과 효율적 전달방법에 대한 함의를 제시한다.

• Journal of Information Management
• /
• v.35 no.4
• /
• pp.1-16
• /
• 2004

In this paper, we outline the user interface problems that the text messaging users face to provide empirical basis for developing better improved mobile text messaging system. Our initial hypothesis was that the majority of the problems that the text messaging users face, namely, 1) difficulty in correctly understanding the intent of the incoming messages and 2) problem with frequently mis-addressing the recipient of the outgoing messages, can be accounted for by the poor usability of the text messaging user interface. Our analysis is based on the text message-based communication diaries, which were recorded for one week by each and every one of 75 college students, and survey taken from the same subjects. The data was collected in 2004. The students listed various difficulties including the limited message length, obscure input method, lack of mean to express emotional content, lack of receipt confirmation, lack of auto save feature when preparing messages to send, and lack of means to permanently save messages. Some of these problems were also identified in the previous studies. However, we were able to gather additional problems that the users face and also elicit potential solutions to remedy the problems. From these findings and analysis, we attempted to provide ways to improve the text messaging user interface.

• Journal of the Korea Society of Computer and Information
• /
• v.15 no.7
• /
• pp.41-47
• /
• 2010

The emergency between vehicles on the superhighway should be transmitted quickly to the following vehicles for safety of people. The message between them has been transmitted by broadcast method in an wireless environment of 802.11, so far. That causes the broadcast storm and a waste of the bandwidth of Wireless network owing to unnecessary process of sending messages to even vehicles that do not have to receive the information. The message collision is a main cause of the increase of message delay. In order to overcome the existing problem, this paper proposed a message broadcast scheme based on cell (MBC), which is the way to divide cars into different groups by cell unit and transmit messages to the members of the groups through the cell primary (cp) vehicles. This paper shows the proposed broadcast's performance in the same environment is much superior to other conventional broadcast schems for inter-vehicle communication, since the receiving ratio among the following vehicles is improved.

• Journal of Broadcast Engineering
• /
• v.26 no.5
• /
• pp.592-598
• /
• 2021

Current cellular systems rely on a CBS protocol for emergency alert broadcast services. However, the CBS protocol just specifies the delivery of a limited text message. Therefore, foreigners, who are unfamiliar with local characters, may have some difficulties in understanding the received CBS text message. The CBS protocol also reveals a distinct restriction in delivering abundant information because of a limited number of text characters. In order to overcome the weak points of the current CBS protocol, we propose a display method of image information and URL on the screens of mobile terminals for the received CBS text message in this paper. The presented approach effectively utilizes the message structure of CBS for 5G cellular systems.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.15 no.3
• /
• pp.211-216
• /
• 2022

Steganography technology protects the existence of hidden information by embedding a secret message in a specific location on the cover medium. Security and resistance are strengthened by applying various hybrid methods based on encryption and steganography. In particular, techniques to increase chaos and randomness are needed to improve security. In fact, the case where the shuffling method is applied based on the discrete cosine transform(DCT) and the least significant bit(LSB) is an area that needs to be studied. I propose a new approach to hide the bit information of Hangul messages by integrating the selective shuffling method that can add the complexity of message hiding and applying the spatial domain technique to steganography. Inverse shuffling is applied when extracting messages. In this paper, the Hangul message to be inserted is decomposed into the choseong, jungseong and jongseong. It improves security and chaos by applying a selective shuffling process based on the corresponding information. The correlation coefficient and PSNR were used to confirm the performance of the proposed method. It was confirmed that the PSNR value of the proposed method was appropriate when compared with the reference value.