• 한국철도학회:학술대회논문집
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• 한국철도학회 2000년도 춘계학술대회 논문집
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• pp.151-156
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• 2000

The brake system is important to stop train safely. The train is sloped by regenerative brake and pneumatic brake which are continuously blended at service brake. When service is applied to train, it is controlled by train weight and brake command. The jerk limitation function is applied for impulseless smoothing braking. All brake applications in service condition have a function of the variable load control to keep the braking effort in proportion to each car load. All of control function are performed by brake controller. Therefore, we will propose the design of brake control system in order to control efficiently

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제46권6호
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• pp.435-439
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• 2020

Extraction socket preservation (ESP) is widely performed after tooth extraction for future implant placement. For successful outcome of implants after extractions, clinicians should be acquainted with the principles and indications of ESP. It is recommended that ESP be actively implemented in cases of esthetic areas, severe bone defects, and delayed implant placement. Dental implant placement is recommended at least 4 months after ESP.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1987년도 한국자동제어학술회의논문집(한일합동학술편); 한국과학기술대학, 충남; 16-17 Oct. 1987
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• pp.892-897
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• 1987

The ability of a robotic manipulator to recognize the shape of an object by feeling its band around the object is useful in many applications. Two-dimensional object contour tracking by force feedback is described. The system consists of IBM PC/AT, PUMA 560 manipulator, PUMA controller and a tip sensor. Position control is accomplished by using VAL command and the unmodified PUMA controller. A contour tracking algorithm is developed and tested on three different types of objects. The experimental results show that the objects' shapes can be successfully identified.

• 음성과학
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• 제1권
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• pp.27-38
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• 1997

The differences in French Intonation between French and Korean learners can be applied to French intonation education. One native French speaker and three native Korean speakers who learned French language at High school were selected for this study. The subjects spoke test phrases based on the different syntactic structures. High-Speed speech Analysis system(RILP) was used for this experiment. The different intonation curves were showed at the end of phrase and at the beginning of phrase between French and Korean learners. At the end of phrases, French intonation appeared to have increasing and decending pitch contours in the case of wh-question, exclamation and finality. However, Korean learner's intonation showed only increasing pitch contours. At the beginning of phrase, French intonation shows decending pitch contours in the case of minor continuation and command. In contrast, Korean learner's intonation appeared to have increasing pitch contours. The new intonation training system using PC can have great effect on education of French as a second language.

• 인터넷정보학회논문지
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• 제22권1호
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• pp.41-50
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• 2021

사이버 킬체인 (Cyber Kill Chain)은 기존의 군사적 용어인 킬체인 (Kill Chain)에서 유래한다. 킬체인은 "파괴를 요구하는 군사 표적을 탐지하는 것에서 파괴하는 것까지의 연속적이고 순환적인 처리 과정 또는 그것을 몇 개의 구분된 행위로 나눈 것"을 의미한다. 킬체인은 핵무기나 미사일과 같이 위치가 변화하고 위험성이 커서 즉각적인 대응을 요구하는 시한성 긴급 표적을 효과적으로 다루기 위해 기존의 작전절차를 발전시켰으며, 방어자가 파괴를 필요로 하는 핵무기나 미사일이 타격점에 도달하기까지의 여러 과정 중 한 단계라도 제 기능을 발휘하지 못하게 하여 공격자가 의도한 목적을 달성하지 못하도록 무력화하는 군사적 개념에서 시작되었다고 볼 수 있다. 이러한 사이버 킬체인의 기본 개념은 사이버 공격자가 수행하는 공격은 각 단계로 구성되어 있으며, 사이버 공격자는 각 단계가 성공적으로 수행되어야 공격 목표를 달성할 수 있으며, 이를 방어 관점에서 보았을 때 각 단계에서 세부적으로 대응 절차를 마련하여 대응하면 공격의 체인 (chain)이 끊어지므로 공격자의 공격을 무력화하거나 지연시킬 수 있다고 본다. 또한 공격 관점에서 보았을 때 각 단계에서 구체적인 대응 절차를 마련하면 공격의 체인이 성공하여 공격대상을 무력화시킬수 있다. 사이버 지휘통제체계는 방어와 공격에 모두 적용되는 체계로 방어시 적의 킬체인을 무력화하기 위한 방어 대응 방안을 제시하여야 하며 공격시에는 적을 무력화하기 위한 각 단계별 구체적인 절차를 제시하여야 한다. 따라서 본 논문은 사이버 지휘통제체계의 방어 및 공격 관점의 사이버 킬체인 모델을 제안하였으며, 또한 방어 측면의 사이버 지휘통제제계의 위협 분류/분석/예측 프레임워크를 제시하였다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권12호
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• pp.5089-5095
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• 2014

Background: As a common and essential contrast medium at present, gadobenate dimeglumine has shown better performance than some other agents when applied to Breast Magnetic Resonance Imaging Screening (Breast MRI Screening). Nevertheless, reports on the diagnostic performance of these two mediums (gadobenate dimeglumine and gadopentetate dimeglumine) are not completely consistent. Objective: To assess the diagnostic value of gadobenate dimeglumine and gadopentetate dimeglumine for Breast MRI Screening in patients suffering from breast cancer and to provide more convinced evidence to guide clinical practice in terms of appropriate contrast agents. Data Sources and Review Methods: Original articles in English and Chinese published before January 2013 were selected from available databases (The Cochrane Library, PUBMED, EMBASE, Chinese Biomedical Literature Database, Chinese Scientific Journals Full-text Database, Chinese Journal Full-text). The criteria for inclusion and exclusion were based on the standard for diagnosis tests. Meta-Disc software (Version 1.4) was used for data analysis. Then, the area under curve (AUC) of SROC and the spearman rank correlation of sensitivity against (1-specificity) were calculated. Results: Total of 17 researches involving 1934 patients were included. The pooled sensitivity of gadobenate dimeglumine and gadopentetate dimeglumine were 0.99 (0.97, 1.00) and 0.93 (0.88, 1.00) respectively. The pooled specificity for these two contrast agents were 0.924 (0.902, 0.943) and 0.838 (0.817, 0.858) respectively, and the AUC of SROC curve were 0.9781 and 0.9215 respectively. Conclusions: Gadobenate dimeglumine can be regarded as a more effective and feasible contrast medium for Breast MRI Screening. At least 5% differences in diagnostic performance are usually considered as clinically relevant.

• Parasites, Hosts and Diseases
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• 제45권2호
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• pp.153-156
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• 2007

The small intestines of 6 species of rodents and 1 species of insectivore were examined seasonally for Plagiorchis muris infection in 3 different localities in northern Gyeonggi-do (Province), near the demilitarized zone (DMZ). A total of 1,496 animals, including 1,366 Apodemus agrarius, 54 Crocidura iasiura (insectivore), 32 Mus musculus, 28 Micronytus fortis, 9 Eothenomys regulus, 6 Micronys minutus, and 3 Cricetulus triton, were live-trapped at Yeoncheon-gun (n = 351), Paju-shi (804) and Pocheon-gun (343) at 3-mo intervals from December 2004 to September 2005. A total of 1,647 P. muris were collected from 72 (5.3%) A. agrarius. The infection rate was the high-est in Pocheon-gun (8.2%), followed by Yeoncheon-gun (5.0%) and Paju-shi (4.2%). A higher infection rate was observed in A. agrarius captured during September (19.4%) than those captured during December (3.0%), June (2.6%), or April (0%). However, the worm burden was the highest in June (av. 32.1/animal), followed by September (24.7), December (4.0), and April (0). None of the other animal species were found infected with P. muris. The results reveal that A. agrarius is a natural definitive host for P. muris, and infection rates and worm burdens vary seasonally and geographically.

• 안보군사학연구
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• 통권1호
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• pp.35-70
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• 2003

President Lee, Syngman was ROK supreme commander at the Korean war. But, it is doubt that he executed his authority and responsibility by the ROK constitution and law. At the phase of the Korean War conduct, his role may be divided into 'military operation execution one' and 'political-diplomacy one'. He appointed unqualified person to the important position of the national defence, didn't make war execution system, and was not make to meet the war. And, after transferring the ROK force operation commanding authority to the Commander in Chief, UN Command, his role was extremely trivial at the military operation execution phase. Any way, he intended to recover the inferior national strength and military capacity with USA aid, and concentrated his effort toward diplomacy with USA. At last, he succeeded in making a mutual defence treaty and gained a big result to harden Korea national security after war. In sum, president Lee was shrewd politician and diplomat than military leader. And, it can be evaluated that he supplemented the lost part of military affairs side with diplomat one.

• 복식
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• 제5권
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• pp.23-40
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• 1981

Jin Chung Sa is located Daeyoli, Jigogmyen, Saesangun, Choongchungnamdo, there are equipped a portrait scroll of Jung Chung Sin. And top of the town hill live in his 13th grandson, Jung Jong Sul. There are his portrait scroll and command flag and a suit of mail. According to say, remains was stollen at 1975 and it found again. But helmet thrown in the sea at the present time lceave only photo. Also, Chung Ryul Sa is located Anrakdong, Dongraegu, Pusan city, there are portrait scroll of died at the Dadaepo and Pusan Jin Sung and Dongrae Sung. Same memorial center is display mail of vice-envoy and inspector. Thus, this copy is refer to mail of Jung Chung Sin and Chung Ryul Sa, besides we will study mail production of Chung Ryul Sa possession. Even if they are bad to condition, I found court rank of mail through it. I hope, in the future, at that find a good data.

• 정보화연구
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• 제9권2호
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• pp.167-176
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• 2012

한국군은 LISI 모델을 활용하여 소요제기 및 획득단계에서 체계의 상호운용성 수준측정 및 평가를 실시하고 있다. 그러나 LISI 모델은 체계 간 상호운용성 평가에 초점이 맞추어져 있기 때문에 다수 체계가 유기적으로 연결된 복합체계의 상호운용성 평가에는 제한적이다. 또한 LISI 모델은 정량적이기 보다는 정성적인 접근방법이기 때문에 상호운용성 의사결정에 가시적인 정보 제공에는 한계가 있다. 이에 대한 해결책으로 본 연구에서는 복합체계의 정량적인 상호운용성 평가 방법론을 제안한다. 제안 방법론에서는 아키텍처를 활용하여 임무 프로세스를 지원하는 복합체계가 식별되고, 체계의 다중도와 유사도 계수를 기반으로 상호운용성 평가가 이루어진다. 그리고 제안 방법론의 효용성을 보이기 위해 사례연구 결과를 제시한다.