• 한국멀티미디어학회논문지
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• 제8권12호
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• pp.1649-1657
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• 2005

In this paper, a fast implementation of JPEG is discussed and its application to multimedia service is presented for mobile wireless internet. A fast JPEG player is developed based on several fast algorithms for mobile handset. In the color transformation, RCT is adopted instead of ICT for JPEG source. For the most time-consuming DCT part, the binDCT can reduce the decoding time. In upsampling and RGB conversion, the transformation from YCbCr to RGB 16 bit is made at one time. In some parts, assembly language is applied for high-speed. Also, an implementation of multimedia in mobile handset is described using MJPEG (Motion JPEG) and QCELP(Qualcomm Code Excited Linear Prediction Coding). MJPEG and QCELP are used for video and sound, which are synchronized in handset. For the play of MJPEG, the decoder is implemented as a S/W upon the MSM 5500 baseband chip using the fast JPEG decoder. For the play of QCELP, the embedded QCELP player in handset is used. The implemented multimedia player has a fast speed preserving the image quality.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2017년도 춘계학술발표대회
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• pp.280-282
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• 2017

최근 소프트웨어에 내장된 취약점 분석을 위한 자동화 도구 개발 연구가 각 분야에서 활발히 연구되고 있다. 그 중 바이너리 코드를 대상으로 바로 보안취약점을 분석하는 방법이 아닌 중간언어를 활용하여 분석하는 방법이 대두되고 있으며 이를 위한 다양한 중간언어가 제시되었다. 그 중 하이레벨 언어 수준의 내용의 기술이 가능하며 명령어 자체적으로 자료형을 유지하여 보안 취약점 분석에 효과적인 언어로 SIL 중간언어가 재조명 받고 있다. 따라서 본 논문에서는 이룰 위해서 x86/64 기반 어셈블리어를 SIL 로 효과적으로 변환하며 프로그램의 의미가 변하지 않는 것을 확인하기 위해서 프로그램의 제어흐름을 시각화하는 기능을 가진 시스템을 제안한다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제31권1호
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• pp.89-99
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• 2004

본 논문에서는 코드 변환 과정과 축약, 탈락, 불규칙 활용 둥으로 변형된 형태소의 원형을 복원하고 분석 후보를 생성하는 등의 과정을 거치지 않고 형태소 사전에서 제공되는 인접 조건에 대한 검사만으로 형태소 분석을 하는 방법을 제안한다. 인접 조건 검사는 복잡한 연산을 하지 않고 단순한 비트 연산만으로 할 수 있기 때문에 제안된 방법은 초고속 형태소 분석기 구현에 적합하다. 본 논문에서 제안한 방법에 따라 구현된 한국어 형태소 분석기 MACH는 1.13 GHz Pentium III 개인용 컴퓨터에서 대략 5분/GB의 분석 속도를 보였으며, 분석 정확도는 99.2 %로 기존의 다른 분석기와 큰 차이가 없었다.

• BMB Reports
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• 제45권2호
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• pp.120-125
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• 2012

We have developed a biologist-friendly, Java GUI application (GoBean) for GO term enrichment analysis. It was designed to be a comprehensive and flexible GUI tool for GO term enrichment analysis, combining the merits of other programs and incorporating extensive graphic exploration of enrichment results. An intuitive user interface with multiple panels allows for extensive visual scrutiny of analysis results. The program includes many essential and useful features, such as enrichment analysis algorithms, multiple test correction methods, and versatile filtering of enriched GO terms for more focused analyses. A unique graphic interface reflecting the GO tree structure was devised to facilitate comparisons of multiple GO analysis results, which can provide valuable insights for biological interpretation. Additional features to enhance user convenience include built in ID conversion, evidence code-based gene-GO association filtering, set operations of gene lists and enriched GO terms, and user -provided data files. It is available at http://neon.gachon.ac.kr/GoBean/.

• 제어로봇시스템학회논문지
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• 제10권11호
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• pp.1028-1036
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• 2004

Ultrasonic sensors are widely used in mobile robot applications to recognize external environments by virtue that they are cheap, easy to use, and robust under varying lighting conditions. In most cases, a single ultrasonic sensor is used to measure the distance to an object based on time-of-flight (TOF) information, whereas multiple sensors are used to recognize the shape of an object, such as a comer, plane, or edge. However, the conventional sequential driving technique involves a long measurement time. This problem can be resolved by pulse coding of ultrasonic signals, which allows multi-sensors to be emitted simultaneously and adjacent objects to be distinguished. Accordingly, this paper presents a new simultaneous coded driving system for an ultrasonic sensor array for object recognition in autonomous mobile robots. The proposed system is designed and implemented. A micro-controller unit is implemented using a DSP, Polaroid 6500 ranging modules are modified for firing the coded signals, and a 5-channel coded signal generating board is made using a FPGA. To verify the proposed method, experiments were conducted in an environment with overlapping signals, and the flight distances fur each sensor were obtained from the received overlapping signals using correlations and conversion to a bipolar PCM-NRZ signal.

• 한국병원경영학회지
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• 제18권2호
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• pp.81-103
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• 2013

This study is to research cost accounting practice and to analyze propriety of patients' medical payment in artificiality kidney center. The researched cost datum of the year 2012 are as follows. - Hemodialysis medical treatment was reimbursed as much as 158,001 won in case of health insured patients, but payed-off as much as 135,810 won. - The average figure of the total hospitals and clinic center is 1,603,303 won, and one time cost of hemodialysis treatment is 154,487 won. Optimal treatment pay are suggested as follows. First, Regardless of the notified classification from MOHW(Ministry of Health and Welfare), 136,000 won of fixed price payment classification needs to be reclassified by patients, severity and tobe rearranged by fixed price payment system of hospitals. Second, Fixed payment code notified by the Ministry of Health and Welfare is recommended to be simplifies and to reflect according to contents of the medical treatment rendered to patients. Third, Establishment of artificial kidney center has to be risk managed because of its huge investment. Fourth, Cost analysis model has to be maintained as basis together with appropriate application of conversion index model mixed with SGR model.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2001년도 춘계학술대회 논문집(한국공작기계학회)
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• pp.171-176
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• 2001

This paper describes the methodology of an IEC 1131-3-based control logic generator for the control system design and converting algorithm between programmable languages. The proposed control logic generator is generated based on the software model and common element with data type, variables, POUs(program organization unit) and execution control unit commonly used within programmable languages of IEC 1131-3 Standard. The generation method of object file was proposed on five programmable language based on IECI 131-3. The generation method of object file is represented as following; 1) the generation method using conversion algorithm from LD to IL with FBD(function block diagram), 2) the generation method using C code generation algorithm from SFC using the SFC execution sequence with FBD and ST(structured text). The proposed control logic generator was implemented by Visual C++ and MFC on MS-windows NT 4.0

• 복식
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• 제45권
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• pp.179-199
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• 1999

Indeterminancy is one of the thought systems which explains all things with not 'either-or' but 'both-and' the conditions and qualities of human identities and inner state. A view of the world of Dionisos of Nietzsche's and the character of Manneristic trend which has resolved the sense of alienation of men by paradoxic expression has succeeded to romanticism surrealism and postmodernism. 1. Cross-dressing has increased under contemporary conditions. There also have been various cross-dressing phenomena in the past but it appears strongly now that it would destroy the cultural stereotypes and give rise to the cultural insecurities in contemporary conditions. 2. The indeterminancy of status that is wealth versus poverty impacts on variations of contemporary dress. This has been represented by neglecting traditional code which is related to wealth in costume by conversion of the symbols of wealth and poverty as disguise with moderation simplicity and additionally poverty image instead of ostentation. 3. In the cultural aspect that is mother culture/ subculture the author has investigated black street fashion which has newly become visible. The black street fashion is wide spread in black popular music such as jazz Rhythm & Blues Reggae and Rap which is subculture against white. The external values of indeterminancy in fashion are n대-manneristic tendencies as deformation eclectic friction and irrational structure and graffiti method. The inner values by indeterminant expression in fashion are irony and paradox grotesque satire and amusement.

• 한국컴퓨터정보학회논문지
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• 제9권4호
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• pp.71-76
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• 2004

개정된 국어 로마자 표기법의 기계적 변환을 위하여 웹 기반하의 컴포넌트를 설계하고 구현하였다. 특히 음운법칙을 적용하여 소리글자로 변환 후 로마자 표기로 자동 변환하는 과정과 전사법 변환에 관한 알고리즘을 제시한다. 컴포넌트는 웹 서버의 스크립트 메커니즘에 의해 작동하도록 하였고, 예외어 사전 등은 웹 서버 내부 혹은 외부에서 지원하는 보조 기능으로 설계하였으며, 전체적인 시스템 구조는 UML 명세서와 의사 코드를 이용하여 작성하였다. 제안된 구조는 웹 컴포넌트 형태의 캡슐화 서비스를 제안함으로써 소프트웨어 개발의 경제성, 라이브러리 재사용 및 확장성 등을 향상시킬 수 있을 것으로 기대된다.

• ETRI Journal
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• 제34권5호
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• pp.649-654
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• 2012

This paper presents a novel 16-quadrature-amplitude-modulation (QAM) E-band communication system. The system can deliver 10 Gbps through eight channels with a bandwidth of 5 GHz (71-76 GHz/81-86 GHz). Each channel occupies 390 MHz and delivers 1.25 Gbps using a 16-QAM. Thus, this system can achieve a bandwidth efficiency of 3.2 bit/s/Hz. To implement the system, a driver amplifier and an RF up-/down-conversion mixer are implemented using a $0.1{\mu}m$ gallium arsenide pseudomorphic high-electron-mobility transistor (GaAs pHEMT) process. A single-IF architecture is chosen for the RF receiver. In the digital modem, 24 square root raised cosine filters and four (255, 239) Reed-Solomon forward error correction codecs are used in parallel. The modem can compensate for a carrier-frequency offset of up to 50 ppm and a symbol rate offset of up to 1 ppm. Experiment results show that the system can achieve a bit error rate of $10^{-5}$ at a signal-to-noise ratio of about 21.5 dB.