• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.241-244
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• 2018

매년 국내 자동차 등록은 계속 증가하고 있으며, 차량이 많아짐에 따라 교통사고 또한 많아지는 중이다. 교통사고가 발생하는 경우 가해자와 피해자를 판단하여 상황에 맞게 처리해야한다. 이러한 상황을 판단할 때, 현장에 있었던 목격자를 제외하고 증거가 될 수 있는 것이 차량용 블랙박스이다. 차량용 블랙박스는 교통사고에 대비해 자동차에 필수 불가결한 장치가 되어가는 중이다. 그러나 블랙박스는 디지털 증거인만큼 증거 훼손, 조작 등으로 인해 무결성을 입증할 방법이 없다. 이에 따라 본 논문에서는 무결성 입증을 위해 PingPong-256 암호알고리즘을 이용하여 생성된 Hash값을 통해 영상의 무결성을 보장하는 방법을 제안한다.

• 한국정보통신학회논문지
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• 제12권4호
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• pp.661-669
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• 2008

현재 네트워크상에서 사용자 인증은 시스템 보안에 중요한 역할을 하고 있다. 공개된 네트워크에서는 개인 정보를 보호하기 위해 여러 가지 인증 절차를 거치게 된다. 이러한 인증 방법에는 간단한 ID/Password 인증부터 복잡한 생체 공학 인증까지 다양한 기술들이 존재 한다. 최근 금융보안업계가 주축이 되어 일회용 패스워드(OTP: One Time Password) 인증 시스템을 활용하기 위한 기술적 시도 및 개발이 활발히 이루어지고 있다. 일회용 패스워드는 사용자가 인증 받고자 할 때 새로운 패스워드를 생성하고, 사용 후 폐기하는 구조를 취하고 있다. 이는 매번 같은 패스워드를 사용했을 때 발생하는 보안 문제점을 해결할 수 있다. 그러나 OTP 인증 방법에도 MITM 공격, 도청, 재전송 공격 등에 의한 취약한 문제점들이 노출되고 있다. 본 논문에서는 기존의 인증 프로토콜 문제점을 개선하고 PingPong-128을 이용한 OTP 인증 프로토콜을 제안한다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 추계학술대회
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• pp.351-354
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• 2009

인터넷상에서 본인 고유의 서비스를 받기 위해서 본인인증 절차는 필수 요소이다. 본인인증 방법 중 가장 보편적으로 아이디/패스워드 방식이 사용되고 있다. 그러나 아이디/패스워드방식이 사용자 인증방법으로서 보안적 문제점이 발견되어, 추가적인 인증방법이 사용되고 있다. 그 예로, 공인 인증서, 보안카드, OTP(One Time Password)등이 있다. 이러한 추가적인 인증 방법들도 사용자의 부주의와 해킹 툴 등으로 인하여 완벽한 인증 방법이 아니라는 것이 확인 되었다. 본 논문에서는 기존에 사용되고 있는 인증 방법들에 대한 문제점들을 분석 후 PingPong-128 키 수열 발생기를 이용하여 보안 토큰을 생성 하여 서비스 제공자와 서비스 이용자 상호간의 안전한 인증방안을 제안한다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.1202-1206
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• 2004

In the future, a machine-tool will be more improved in the form of a knowledge evolution based device. In order to develop the knowledge evolution based machine-tool, this paper proposes the structure of knowledge evolution and the scheme of a dialogue agent among agent-based modules such as a sensory module, a dialogue module, and an expert system. The dialogue agent has a role of interfacing with another machine for cooperation. To design of the dialogue agent module in M2M(Machine To Machine) environment, FIPA-OS and ping agent based on FIPA-OS are analyzed in this study. Through this, it is expected that the dialogue agent module can be more efficiently designed and the knowledge evolution based machine-tool can be hereafter more easily implemented.

• 한국임상수의학회지
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• 제16권2호
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• pp.413-416
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• 1999

To establish feline electroacupuncture anesthesia, 5 cats (mixed, 1 month old, 0.4~0.5 kg, female) were examined in the present study. The acupoints used for feline electroacupuncture anesthesia were Tian-ping and Bai-hui. After perpendicular insertion of needle to Tian-ping and Bai-hui, respectively, positive electrode was connected at Tian-ping and negative electrode was connected at Bai-hui, respectively, Electric condition was 3 V and 30 Hz. To examine the effect of electroacupuncture anesthesia, laparotomy (5 heads)was applied. The pain of the body surface and the extremities excluding the tail was not found, and the induction time of electroacupuncture anesthesia was approximately 1 minute. As for the reactions with electroacupuncture anesthesia, the head part was directed to backward, blepharoreaction was mild and the consciousness was vivid. The class of anesthesia effect was excellent in 4 heads and was poor in 1 head. The pain was not observed and bleeding was comparatively small volume during surgery in excellent group.

• 정보처리학회논문지C
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• 제18C권5호
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• pp.343-360
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• 2011

이 논문의 목적은 시뮬레이션 소프트웨어인 OPNET Modeler의 IPv6 Planning and Operations를 이용하여 IPv6 이관, IPv6 기반의 OSPFv3 라우팅 실험, OSPFv3 라우팅에 대한 IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크 Ping 실험을 가상망으로 모델링 후 종단간 라우팅 순환경로 관찰과 Ping 실험을 시뮬레이션하여 그 특성을 분석한 연구이다. 거대한 유무선 통합망을 토대로 한 IPv6 배치는 연구 과제 중 하나이며 이전문헌의 연구자들이 향후 연구로 남겨 놓은 OSPFv3와 EIGRP에 대한 성능 매트릭 분석을 IPv4/IPv6 환경 내에서 수행 계획과 어떻게 하면 종단간 IPv6 성능을 향상할 수 있는지를 탐색할 계획을 들 수 있다. 또한 IPv4 네트워크 상에 연구를 수행했으나 종단간 IPv6 기반의 OSPFv3 가상망 연구 수행은 없었던 점을 들 수 있다. 따라서 우리는 이전문헌의 연구를 이어서 IPv6 이관, IPv6 기반의 OSPFv3 라우팅, IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크에 대한 모델링, 시뮬레이션을 수행하였다. 머지않은 미래에 본격적인 IPv6 활용 이전, IPv6 기반의 가상망을 IPv6 Planning and Operations 이용한 IPv6 이관 여부, 종단간 IPv6 기반의 OSPFv3에 대한 라우팅 순환 경로 탐색, OSPFv3 라우팅에 대한 IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크 Ping 실험으로 앤드유저 관점에 대한 IPv6 망 설계와 배치시 도움을 받을 것이다. 시뮬레이션 결과, 모델링된 종단간 가상망에 대한 최적 경로를 관찰할 수 있었고 인터넷 서비스 품질을 보장하는 VC 서버가 HTTP 서버보다 더 빠른 Ping 응답 시간을 보인 점을 알 수 있었다.

• 한국의사학회지
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• 제25권2호
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• pp.63-96
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• 2012

The PingMaiFa chapter, which is the second chapter of SongBon ShangHanLun, is the scholarly description(專論) of the pulse and pathological mechanism but has not been studied and published yet. This study is about article 1-13 which is the first part of The PingMaiFa chapter. We compared the original texts within the editions, comparing and analyzing the annotations of successive dynastic medical group. The articles of The SongBon ShangHanLun PingMaiFa chapter 1-13 is consisted as is shown: article 1 states about the general features of normal pulse (平脈) and its physiological mechanism and the morbid pulses (病脈) caused by wind, cold, retained fluid, pain and heat vexation, article 1,10 state about the normal pulses of Five viscera (lung, heart, spleen, liver and kidney) and their manipulations in pulse taking, article 2 states about the differentiations of deficiency and excess syndrome according to pulse conditions, article 3, 4 state about the estimation of good prognoses and a factitious disorder by the combination of pulses and symptoms, article 6 states about Latent qi (伏氣) and its diagnostic features, article 5 states about inspection and listening examination as co-diagnostic methods of the pulse diagnosis, article 7, 8, 9 state that the emotions, such as fear and shame, and the dietary are important factors to consider for making diagnosis, article 11 states about the overwhelming pulse (相乘脈) which indicates the abnormal correlations between five phases and appears in four patterns as the dissolute(縱), the unrighteous(橫), the unfavorable(逆) and the favorable(順), article 12 states about 6 harmful pulses(殘賊脈), which are string-like pulse(弦脈), tight pulse(緊脈), floating pulse(浮脈), slippery pulse(滑脈), sunken pulse(沈脈), rough pulse(澁脈), article 13 states about "JaeGoe"(災怪) which is an unexpected response after treatment and it comes because of the formulas that had before. Throughout all these articles, The PingMaiFa chapter not only offers great value for Pulse-taking diagnosis, but also leads to a better understanding of clinical applications.

• Communications for Statistical Applications and Methods
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• 제24권3호
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• pp.241-254
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• 2017

Drawing a sample can be costly or time consuming in some studies. However, it may be possible to rank the sampling units according to some baseline auxiliary covariates, which are easily obtainable, and/or cost efficient. Ranked set sampling (RSS) is a method to achieve this goal. In this paper, we propose a modified approach of the RSS method to allocate units into an experimental study that compares L groups. Computer simulation estimates the empirical nominal values and the empirical power values for the test procedure of comparing L different groups using modified RSS based on the regression approach in analysis of covariance (ANCOVA) models. A comparison to simple random sampling (SRS) is made to demonstrate efficiency. The results indicate that the required sample sizes for a given precision are smaller under RSS than under SRS. The modified RSS protocol was applied to an experimental study. The experimental study was designed to obtain a better understanding of the pathways by which positive experiences (i.e., goal completion) contribute to higher levels of happiness, well-being, and life satisfaction. The use of the RSS method resulted in a cost reduction associated with smaller sample size without losing the precision of the analysis.

• 연구논문집
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• 통권34호
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• pp.113-119
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• 2004

Recently, the conventional concept of a machine-tool in manufacturing systems is changing from the target of integration to the autonomous manufacturing device based on a knowledge evolution. Subsequently, a machine-tool has been the subject of a cooperation through an advanced environment where an open architecture controller, high speed network and internet technology are contained In the future, a machine-tool will be more improved in the form of a knowledge evolution based device. In order to develop the knowledge evolution based machine-tool, this paper proposes the structure of knowledge evolution and the scheme of a dialogue agent among agent-based modules such as a sensory module, a dialogue module, and an expert system. The dialogue agent has a role of interfacing with another machine for cooperation. To design of the dialogue agent module in M2M(Machine To Machine)environment, FIPA-OS and ping agent based on FIPA-OS are analyzed in this study. Through this, it is expected that the dialogue agent module can be more efficiently designed and the knowledge evolution based machine-tool can be hereafter more easily implemented.

• 한국임상수의학회지
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• 제16권2호
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• pp.409-412
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• 1999

To establish the electroacupuncture anesthesia for pigs, 6 piglets (Landrace mixed, 1 month old, 3.7~5.3 kg, female: 3 heads and male: 3 heads) were examined. The acupoints used for porcine electroacupuncture anesthesia were An-shen, and Tian-ping and Bai-hui. After horizontal insertion of needle to left and right An-shen, and perpendicular insertion to Tian-ping and Bai-hui, respectively, positive electrode was connected at right An-shen and Tian-ping, and negative electrode was connected at left An-shen and Bai-hui using veterinary electroacupuncture anesthesia apparatus, respectively. Electric condition was 3 V and 30 Hz. To examine the effect of electroacupuncture anesthesia, laparotomy (4 heads) and castration (2 heads)were applied. The induction time of electroacupuncture anesthesia was very rapid and about 1 minute, and pain of the body surface including the extremities was not detected. As for the reactions with electroacupuncture anesthesia, the head was directed to backward, nasal part was curved to one side, and blepharum was closed in part of changed nasal part. In addition, consciousness was vivid, and muscle tension and lift of the tail were observed in early stage but was relaxated afterwards. The pain was not found during incision and suture, bleeding was comparatively small volume and the class of anesthesia effect was excellent.