• Review of KIISC
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• v.5 no.2
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• pp.74-89
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• 1995

본 고에서는 ISO/IEC JTC1/SC27의 해쉬함수에 관한 표준화 현황을 알고리즘을 중심으로 조사 연구하였다. 해쉬함수 표준의 제2부 N비트 블럭 암호 알고리즘을 이용하는 해쉬함수, 제3부 RIPEMD 및 SHS의 전용 해쉬함수, 제4부 모듈러 연산을 이용하는 해쉬함수들을 조사 연구하였으며, 그 중 RIPEMD 및 SHS의 C 언어 코드를 제시하였다.

• Information and Communications Magazine
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• v.21 no.6
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• pp.22-38
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• 2004

미국은 이라크 전에서 운송되는 군수품의 체계적 관리 및 전장에서의 인명손실을 광범위하게 추적하기 위해 RFID 기술을 적용함으로써 세계를 놀라게 했다. 현재는 전쟁터의 적과 아군(피아)의 구분을 위해 RFID 기술을 연구하고 있는 실정이다. RFID에 대한 세계의 진행은 다음과 같다. 미국은 MIT(메사추세츠 공대)를 중심으로 북미지역코드관리기관(UCC, Uniform Code Council), 국방성, 업체 등의 협력을 통해 Auto-ID 센터를 설립(1998년)하여 기술개발 및 상용화를 적극 추진 중이며, 일본은 사카무라겐교수를 중심으로 U-ID 센터를 설립하여 일본 독자적인 노선을 밟고 있다. 유럽 역시 독일회사인 매트로(Metro)의 Future Store 프로젝트, MyGrocer 프로젝트 등 활발히 진행 중에 있다.(중략)

• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.2519-2521
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• 2000

브러시리스용 다기능 제어구동장치를 80C196KC 콘터롤러와 IPM으로 단순화하여 개발하여 기존의 TTL 소자 구성에 비하여 하드웨어를 가장 단순화시키고 표준화제품의 개발을 유도하였다. 대신에 대부분의 기능을 소프트웨어로 처리함으로써 설계의 융통성과 확장성을 높이고 고성능 저가격의 제품을 개발할 수 있었다. 특히, 속도 센서로 자극검출에 필요한 홀센서를 이용함으로써 기존 엔코드 센서에 비하여 속도 분해능은 다소 떨어지지만 이 센서를 없앨 수 있어 제품가격을 낮추고, 크기를 줄일 수 있는 장점을 갖는다. 제어 구동장치의 성능시험을 통하여 개발결과를 검증하였으며, 고정밀 속도제어를 실현할 수 있음을 확인하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10a
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• pp.535-537
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• 2001

최근 소프트웨어 산업에 있어서 사용자 인터페이스는 가장 중요한 품질 요소의 하나가 되었다. 개발된 소프트웨어는 평균 48% 가량의 코드가 사용자 인터페이스(user interface)를 위한 것이다. 또한 소프트웨어의 품질향상에 대한 중요성이 증대되고 있으며 소프트웨어의 품질 관련 국제 규격들에 대한 표준화가 많은 진전을 보이고 있다. 본 논문은 소프트웨어 품질 평가를 목적으로 사용성에 대한 평가모델을 개발하여 소프트웨어 설계 개선요인을 발견.하고 제품의 품질을 개발자 및 사용자 측면에서 향상시킬 수 있게 하는 것이 목적이다.

• The Journal of the Acoustical Society of Korea
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• v.30 no.1
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• pp.1-8
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• 2011

This paper presents a method for improving the performance of ISF coefficients quantizer through compensating the defect of the split structure vector quantization using the ordering property of ISF coefficients. And design the ISF coefficients quantizer for wideband speech codec using proposed method. The wideband speech codec uses split structure vector quantizer which could not use the correlation between ISF coefficients fully to reduce complexity and the size of codebook. The proposed algorithm uses the ordering property of ISF coefficients to overcome the defect. Using the ordering property, the codebook redundancy could be figured out. The codebook redundancy is replaced by the adaptive-extended codebook to improve the performance of the quantizer through using the ordering property, ISF coefficient prediction and interpolation of existing codebook. As a result, the proposed algorithm shows that the adaptive-extended codebook algorithm could get about 2 bit gains in comparison with the existing split structure ISF quantizer of AMR-WB (G.722.2) in the points of spectral distortion.

• Korean Journal of Ecology and Environment
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• v.53 no.4
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• pp.380-389
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• 2020

Research on diagnosing and predicting the response of ecosystems caused by environmental changes such as artificial disturbance and climate change is emerging as the most important issue of biodiversity and ecosystem researches. This study aims to clean, standardize, and provide the results of National Ecosystem Survey which should be considered fundamentally in diagnosing and predicting ecosystem changes in the form of dataset. To refine and clean the dataset we developed a simple verification program based on the fifth National Ecosystem Survey Guideline and applied that program to the data from the second (1997~2005), third (2006~2013) and fourth (2014~2018) National Ecosystem Survey. Data quality control processes were implemented including (1) standardization of terminology, (2) similar data table integration, (3) unnecessary attribute and error elimination, (4) unification of different input items, (5) data arrangement in codes, and (6) code mapping for input items. These approaches and methods are the first attempt propose an option for ecological data standardization in Korea. The standardized dataset of National Ecosystem Survey in Korea will be easily accessible, reusable for both researchers and public. In addition, we expect it will contribute to the establishment of diverse environmental policies concerning environmental assessments, habitat conservation, prediction of endangered species distribution and ecological risks due to climate change. The dataset through this study is open freely online via EcoBank (nie-ecobank.kr) which is the first ecological information portal system in Korea developed by National Institute of Ecology.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.5
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• pp.541-548
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• 2017

A theoretical study on gas-liquid two-phase flow flushing systemnitrogen gas to the oil used for existing flushing equipment was conducted on the basis of ISO code so as to improve performance of existing high-temperature oil flushing equipment used in ocean plant facility drying field. For study, we analyzed process simulation results mixed fluid mixing ratio, temperature, Reynolds number and liquid hold up affectcleaning performance after designing oil-nitrogen gas mixture flushing system process. As a result, as the volume flow rate of mixed fluid increases with the tube diameter the volume fraction of the gas phase constant, the liquid fraction difference value at the inlet and outlet of horizontal hydraulic piping increases. It was found that the phase distribution between oil and nitrogen gas bubbles varies depending on the position the pipe lengthdirection. This change in phase distribution is expected to have a significant impact on the clean performance of an oil-nitrogen gas mixture flushing system.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.47 no.6
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• pp.73-79
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• 2010

The number of electronic embedded software in vehicle system is ever increasing for years. As a result, the electronic control units have been growing dramatically, and it is required to mutual link between these units. Due to separate API each and every embedded platform, it is difficult to develop and integrate in automotive industry. The AUTOSAR project consists suppliers and manufacturers, and the partnership is a standardized platform to establish and develop an industry standard. On the previous works, we implemented the RTE generated module design based on AUTOSAR architecture. This paper specifically focuses on the testing of the development tool that generates RTE source code. The result satisfied a need for a RTE requirements and AUTOSAR methodology in a vehicle applications.

• KIPS Transactions on Computer and Communication Systems
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• v.9 no.8
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• pp.165-170
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• 2020

As the IoT (Internet of Things) era is activated, a lot of information including personal information is being transmitted through IoT devices. For information protection, it is important to perform cryptography communication, and it is required to use a lightweight security protocol due to performance limitations. Currently, most of the encryption methods used in the security protocol use RSA and ECC (Elliptic Curve Cryptography). However, if a high performance quantum computer is developed and the Shor algorithm is used, it can no longer be used because it can easily solve the stability problems based on the previous RSA and ECC. Therefore, in this paper, we designed a security protocol that is resistant to the computational power of quantum computers. The code-based crypto ROLLO, which is undergoing the NIST (National Institute of Standards and Technology) post quantum cryptography standardization, was used, and a hash and XOR computation with low computational consumption were used for mutual communication between IoT devices. Finally, a comparative analysis and safety analysis of the proposed protocol and the existing protocol were performed.

• Journal of Digital Convergence
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• v.11 no.3
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• pp.33-40
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• 2013

The smart media has changed the patterns of advertising information consumption and media usage behavior drastically. The smart advertisements, however, have failed to perform as sophisticated as the smart devices carried out. In this respect, this study is designed to figure out the current situation and the ecosystem of smart advertising and to prepare its activation plan through a survey(FGI), which will be able to give policy suggestions about smart media and advertising. In conclusion, this study points out that the proliferation of smart advertising needs to install "Smart Media Representative" which provides independable decisions on the regulation of smart advertising, the system of price, standardization of advertising, the development of various forms of advertisements, the scientific measurement of the effectiveness, the protection of privacy, professional manpower training, etc.