• Title/Summary/Keyword: 문자메시지

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A Study on Alarm System of a right Fecundation time for a Sow Using Ubiquitous Sensor Network(USN) (유비쿼터스 센서 네트워크를 이용한 돼지 발정 감지 및 수정 적기알림 장치 개발에 관한 연구)

  • Kim, Min-Nyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.1
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    • pp.92-95
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    • 2010
  • A sow has a characteristic changing in its temperature. It is a suitable time that is decreasing after sow's body temperature increased to the highest point. We observe the variation of temperature through USN(Ubiqutous Sensor Network) system using wireless sensor inserted in the womb. The wireless sensor send massage to user's server and its server send SMS massage to user's cell phone. We contribute to user's income increase as it notice to suitable fecundation.

Contents-Based Korean SMS Spam Filtering Using Morpheme Unit Features (형태소 단위 자질을 이용한 콘텐츠 기반 한국어 SMS 스팸 필터링)

  • Sohn, Dae-Neung;Shin, Joong-Hwi;Lee, Jung-Tae;Lee, Seung-Wook;Rim, Hae-Chang
    • Annual Conference on Human and Language Technology
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    • 2008.10a
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    • pp.195-200
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    • 2008
  • 본 논문에서는 형태소 분석을 이용한 확률 기반 한국어 SMS 스팸 필터링 기법을 제안한다. 기존 연구에서는 단어 및 문자 단위 어휘 정보를 자질로 이용한 영어 및 스페인어 SMS 스팸 필터링 방법들이 있다. 하지만 교착어인 한국어의 경우, 어근과 접사의 조합에 의해서 다양한 어절이 형성될 수 있다. 따라서 어절단위 어휘 정보를 자질로 사용할 경우, 미등록어(out of vocabulary) 문제가 발생한다. 특히, 매우 적은 수의 단어들로 구성된 SMS 메시지의 경우에는 이 문제가 매우 심각하다. 본 논문에서는 형태소 분석을 이용하여 이러한 문제점을 해결하고자 하였다. 실험 결과, 제안하는 방법은 기존 연구와 비교하여 10.6%의 스팸 분류 정확률 향상을 보였다. 또한 미등록어만을 포함하는 SMS 메시지의 수는 약 77% 감소하였다.

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The Design and Implementation of the Mobile Messenger based on Voice Recognition (음성 인식 기반의 모바일 메신저 설계 및 구현)

  • Yu, Sang-Chul;Yu, Byung-Seok;Kim, Yu-Mi;Lee, Yu-Jin;Koh, Hoon;Yun, Sung-Hyun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2012.11a
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    • pp.1694-1697
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    • 2012
  • 음성 인식은 인간이 발성하는 음성을 컴퓨터 프로그램을 이용하여 문자 정보로 변환하는 기술이다. 음성은 사람마다 각기 다르기 때문에 인식률도 각각 차이가 나게 되어 범용 인터페이스로 사용되기에는 적합하지 않다. 하지만 최근 구글, 다음 등 대형 포털을 중심으로 서버 기반의 음성 인식 서비스가 제공되면서 사용자 인터페이스로 음성을 이용하는 것이 주요 이슈로 부각되고 있다. 카카오톡과 같은 메신저 프로그램은 네트워크를 이용하여 그룹 내의 사용자들 간에 메시지를 주고받는다. 여기에 사용되는 터치 자판은 간격이 좁아서 오타가 많이 발생하고, 긴 문장을 입력할 때 시간이 많이 걸리며, 운전 중에 사용할 경우 사고 위험이 높아지는 단점이 있다. 이러한 문제들을 해결하기 위해서는 음성 인식 인터페이스를 접목하는 것이 이상적이다. 본 논문에서는 음성 인식 기반의 스마트폰용 모바일 메신저 프로그램을 설계 및 구현하였다. 외부의 음성 인식 서버를 이용하여 음성을 인식하고, 인식된 음성을 텍스트로 변환하며, 채팅 서버를 통해 메시지를 전달한다.

A Text Processing Method for Devanagari Scripts in Andriod (안드로이드에서 힌디어 텍스트 처리 방법)

  • Kim, Jae-Hyeok;Maeng, Seung-Ryol
    • The Journal of the Korea Contents Association
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    • v.11 no.12
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    • pp.560-569
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    • 2011
  • In this paper, we propose a text processing method for Hindi characters, Devanagari scripts, in the Android. The key points of the text processing are to device automata, which define the combining rules of alphabets into a set of syllables, and to implement a font rendering engine, which retrieves and displays the glyph images corresponding to specific characters. In general, an automaton depends on the type and the number of characters. For the soft-keyboard, we designed the automata with 14 consonants and 34 vowels based on Unicode. Finally, a combined syllable is converted into a glyph index using the mapping table, used as a handle to load its glyph image. According to the multi-lingual framework of Freetype font engine, Dvanagari scripts can be supported in the system level by appending the implementation of our method to the font engine as the Hindi module. The proposed method is verified through a simple message system.

A Study on the Modus Operandi of Smishing Crime for Public Safety (국민안전을 위한 스미싱 범죄수법분석)

  • Choi, Kwan;Kim, Minchi
    • Convergence Security Journal
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    • v.16 no.3_2
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    • pp.3-12
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    • 2016
  • The purpose of this study is to analyse Modus Operandi of smishing. For the study, 87 cases of smishing crime reports and smishing experiences of victims were analysed and 10 police officers who investigates smishing crime were interviewed. The results indicated that smishing crime can be divided into the preparation stage and the implementation stage. In the preparation stage, two modus operandi patterns, collection of personal information and text message script composition, were identified. In the implementation stage, seven modus operandi patterns were identified: sending smishing text messages and installation of malicious mobile applications, leak personal information, sending personal information to smishing crime organization through online server, payment attempt using collected personal information, intercept authorization code, completion of payment using intercepted authorization code, and payment amount was delivered to victims. Further implications were discussed.

An Anti-Forensic Technique for Hiding Data in NTFS Index Record with a Unicode Transformation (유니코드 변환이 적용된 NTFS 인덱스 레코드에 데이터를 숨기기 위한 안티포렌식 기법)

  • Cho, Gyu-Sang
    • Convergence Security Journal
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    • v.15 no.7
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    • pp.75-84
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    • 2015
  • In an "NTFS Index Record Data Hiding" method messages are hidden by using file names. Windows NTFS file naming convention has some forbidden ASCII characters for a file name. When inputting Hangul with the Roman alphabet, if the forbidden characters for the file name and binary data are used, the codes are convert to a designated unicode point to avoid a file creation error due to unsuitable characters. In this paper, the problem of a file creation error due to non-admittable characters for the file name is fixed, which is used in the index record data hiding method. Using Hangul with Roman alphabet the characters cause a file creation error are converted to an arbitrary unicode point except Hangul and Roman alphabet area. When it comes to binary data, all 256 codes are converted to designated unicode area except an extended unicode(surrogate pairs) and ASCII code area. The results of the two cases, i.e. the Hangul with Roman alphabet case and the binary case, show the applicability of the proposed method.

Development of Emergency Exit Guidance Lamps using the Characteristics of Each Sensor in Case of Fire (화재 발생 시 센서별 특성을 이용한 비상구 유도등 개발)

  • Kim, Jong-Kwan;Jeong, Do-Hyeon;Yu, Yong-Woo;Yang, Min-Hyeok;Lee, Boong-Joo
    • The Journal of the Korea institute of electronic communication sciences
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    • v.16 no.6
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    • pp.1019-1028
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    • 2021
  • Emergency exit guidance lights were designed and manufactured to quickly determine the location of the emergency exit in the event of a fire using a gas sensor, an illumination sensor, a temperature sensor, an Arduino Uno, and a Bluetooth module. This research was designed such that, when a fire breaks out, a red arrow appears as the illuminance value is low and a green arrow as the illuminance value is high to improve visibility when detecting high temperature and smoke. In addition, it is designed to prevent more serious conflagration by applying an alarm sound and text transmission algorithm using a communication module to transmit text messages indicating a 174Hz alarm sound and a fire location to prevent more serious conflagration.

Development of Legibility Distance Model for VMS Messages using In-Vehicle DGPS Data (DGPS를 이용한 VMS 메시지 판독거리 모형개발)

  • O, Cheol;Kim, Won-Gi;Lee, Su-Beom;Lee, Cheong-Won;Kim, Jeong-Wan
    • Journal of Korean Society of Transportation
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    • v.25 no.5
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    • pp.23-32
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    • 2007
  • Variable message sign (VMS), which is used for providing real-time information on traffic conditions and incidents, is one of the important components of intelligent transportation systems. VMS messages need to meet the requirements with the consideration of human factors that messages should be readable and understandable while driving. This study developed a legibility distance model for VMS messages using in-vehicle differential global positioning data (DGPS). Traffic conditions, highway geometric conditions, and VMS message characteristics were investigated for establishing the legibility model based on multiple linear regression analysis. The height of VMS characters, speed, and the number of lanes were identified as dominant factors affecting the variation of legibility distances. It is expected that the proposed model would play a significant role in designing VMS messages for providing more effective real-time traffic information.

Secure Steganography Based on Triple-A Algorithm and Hangul-jamo (Triple-A 알고리즘과 한글자모를 기반한 안전한 스테가노그래피)

  • Ji, Seon-Su
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.11 no.5
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    • pp.507-513
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    • 2018
  • Steganography is a technique that uses hidden messages to prevent anyone apart from knowing the existence of a secret message, except the sender and trusted recipients. This paper applies 24 bit color image as cover medium. And a 24-bit color image has three components corresponding to red, green and blue. This paper proposes an image steganography method that uses Triple-A algorithm to hide the secret (Hangul) message by arbitrarily selecting the number of LSB bits and the color channel to be used. This paper divides the secret character into the chosung, jungsung and jongsung, and applies crossover, encryption and arbitrary insertion positions to enhance robustness and confidentiality. Experimental results of the proposed method show that insertion capacity and correlation are excellent and acceptable image quality level. Also, considering the image quality, it was confirmed that the size of LSB should be less than 2.

A Phoneme-based Approximate String Searching System for Restricted Korean Character Input Environments (제한된 한글 입력환경을 위한 음소기반 근사 문자열 검색 시스템)

  • Yoon, Tai-Jin;Cho, Hwan-Gue;Chung, Woo-Keun
    • Journal of KIISE:Software and Applications
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    • v.37 no.10
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    • pp.788-801
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    • 2010
  • Advancing of mobile device is remarkable, so the research on mobile input device is getting more important issue. There are lots of input devices such as keypad, QWERTY keypad, touch and speech recognizer, but they are not as convenient as typical keyboard-based desktop input devices so input strings usually contain many typing errors. These input errors are not trouble with communication among person, but it has very critical problem with searching in database, such as dictionary and address book, we can not obtain correct results. Especially, Hangeul has more than 10,000 different characters because one Hangeul character is made by combination of consonants and vowels, frequency of error is higher than English. Generally, suffix tree is the most widely used data structure to deal with errors of query, but it is not enough for variety errors. In this paper, we propose fast approximate Korean word searching system, which allows variety typing errors. This system includes several algorithms for applying general approximate string searching to Hangeul. And we present profanity filters by using proposed system. This system filters over than 90% of coined profanities.