C - Scan을 이용한 시편 내부의 결함 측정 및 탐상 (Ⅱ)

玄淸男,韓材國 弘益大學校 産業技術硏究所 2004 産業技術 Vol.14 No.-

In this study, the flaws in the several test specimens are detected by using a C-Scan system. The following results are obtained through this research; 1. How to detect the flaws in the specimens 2. How to determine the depth of the flaws in the specimens 3. How to determine the size of the flaws in the specimens 4. How to determine if the specimen is in one piece or not and how to detect defects at the joining part 5. Analysis by using Linear Profile and 3D View In order to determine the depth and size of the flaws in the specimens precisely, it is very important to operate the C-Scan system properly

성인남성의 생활습관이 건강체력 및 운동체력에 미치는 영향

남덕현,박재우 龍仁大學校 體育科學硏究所 2005 體育科學硏究論叢 Vol.15 No.1

This study examines the living styles of the middle-aged men for the adult's health management and tries to find out the influence that affects health strength and physical strength. It targets faculty members and graduate students at Y University in Gyeonggi-do. After group sampling, it performs cross analysis, independent sample t-test, and univariate analysis. The results of the study are summarized as follows. 1. Living styles show significant relations to cardiopulmonary functions. The living styles show good when life satisfaction level is higher, when sleeping often lacks more than they need, when drinking times are fewer, when exercising frequency is higher, and when meat eating is lower. 2. Out of the living styles that show significant relations to health strength, life satisfaction level has relations to flexibility; sleeping styles to cardiopulmonary endurance, flexibility, muscular strength, and muscular endurance; drinking styles to body fat rate; exercising frequency to muscular endurance; meat eating to body fat rate and flexibility. 3. Out of the living styles that show significant relations to physical strength, life satisfaction level, sleeping styles, and drinking styles have relations to agility and explosive muscular strength; exercising frequency have relations to agility.

경유양동상미로접근법에 의한 안면신경감압술 16례

남부현,이민한,장재웅,전우진,박찬일 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.2

With increase of traffic accidents, the otologic problems including facial palsy with skull fracture are more concerned. This paper is report our experiences with 16 cases of traumatic facial nerve palsy which have been employed transmastoid supralabyrinthine facial nerve decompression during last four years. The results are as follows: 1. Of the 16 patients, 13 patients(81.3%) were men and 3 patients (18.8%) were women. And sex ratio was 1.4:1 (male predominent). 2. In fracture type, longitudinal fracture was 10 cases (62.5%), transverse fracture was 1 case(6.3%) and mixed fracture was 2 cases(12.5%). 3. Cerebral contusion was combined in 8 cases(50%) and facial bone fracture was combined in 6 cases(37.55). Because of these combined lesions, otologic diagnoses and treatment was delayed. 4. The most common physical finding on clinical examination were a bloody otorrhea(75%) and hearing impairment(75%). 5. In frequency of lesion in facial nerve, tympanic segment(35.7%) was the most common site, followed by geniculate ganglion(14.3%). Suggested mechanisms in facial palsy were nerve compression(57.1%), granulation tissue and congestion. 6. There were improvment of House-Brackmann grades in 13 cases after decompression. 7. Incudostapedial separation was found in 4 cases and incus fracture was found in 2 cases. Hearing improvement was found in 3 cases being ossiculoplasty.

人的資本 蓄積과 比較優位의 變化 : 韓國의 경우 The Case of Korea

南宗鉉,李在鎬 한국국제경제학회 2003 국제경제연구 Vol.9 No.1

국가간 비교우위의 원천이 과거의 물적자본 중심에서 인적자본 중심으로 변화하고 있다. 그러나 전통적인 무역모형에서는 노동을 하나의 동질적인 생산요소로 취급함으로써 현실과는 거리감이 있었다. 본고에서는 노동력을 전문성 또는 숙련도를 기준으로 직종별로 세분하여 요소부존 순위를 측정하고, 그 순위의 변화를 통해 한국에서의 인적자본 축적과 주요 교역상대국과의 비교우위 변화에 대해서 분석을 시도하였다. 측정결과, 우리나라는 1990년대에 세계 전체 및 미국, 일본과의 교역에서는 '고직능 생산직'이 가장 높은 순위를 나타냈으며 전문가 및 고위기술직이 속해 있는 '고직능 사무직'은 낮은 순위를 보였다. 반면, 중국의 경우에는 미국 및 일본의 경우와는 반대의 양상을 보였다. 또한 1992∼1997년 동안 한국에서의 인적자본이 증가하고는 있으나, 그렇게 빨리 변화하고 있지는 않다는 점도 확인할 수 있었다. The importance of human relative to physical capital has been increasing as a source of comparative advantage across nations. Nevertheless, labor has tended to be treated as a homogeneous factor in many traditional trade models, leaving them unrealistic. This paper attempts to classify labor into detailed groups with different level of skills and specialties, and then to estimate relative abundance of each labor group as embodied in korea's trade against its major trading partners. The resulting estimates and their ranking reveal that korea is most abundant with 'blue-collar, high skill' labor and least abundant with 'white-collar, high skill' labor when measured against the rest of the world, the United States, and Japan. The opposite is observed when measured against China. The ranking shows some evidence that Korea's human capital abundance is increasing between 1992 and 1997, but the extent is rather small.

중학교 남자 테니스 선수의 운동기능수준별 시합 전 경쟁상태불안

남인수,최인태,전중기,윤재만,고성경,이종삼,임승현 대구대학교 인문과학연구소 2008 人文科學硏究 Vol.31 No.-

The purpose of this study was to investigate if there is any difference in the level of competitive state anxiety according to the level of motor skill before the game and to provide the players with basic data for the mental practice. The subjects of this study consist of 20 men's a middle school tennis players. The experimental group was divided into superior players group and inferior players group. And then by using a CSAI-2 questionnaire, three subfactors of competitive state anxiety, or cognitive state anxiety, somatic state anxiety and state self-confidence were measured. The method of measurement was carried out three times, or one week, one day and two hours before the game. The results of this study were as follows. First, About both cognitive state anxiety and somatic state anxiety, inferior players were significantly higher than superior players. Second, About state self-confidence, superior players were significantly higher than inferior players. Third, As the game was around, both cognitive state anxiety and somatic state anxiety which all the players including superior and inferior players had increased. But the state self-confidence of all players decreased.

ATM 네트워크의 폭주제어를 위한 통합 UPC

남재현,이기현 명지대학교 공학기술연구소 1994 공학기술연구소 논문집 Vol.9 No.-

Communication networks based on the asynchronous transfer mode(ATM) have been proposed by ITU as the solution for the future broadband integrated services digital network(B-ISDN). In this paper, we proposes a model to satisfy new requirements of the Quality of Service(QoS). The proposed model is a unified usage parameter control(UPC) using 2-state policer. This model consists of a buffer and two peak rate limiter. This buffer is placed in front of the 2-state policer. The first controller is set to the allocated and advertised peak rate. The peak rate is set by the second controller. A new congestion control strategy is presented that address the current conflict of using the 1-bit cell loss priority field in ATM cells. With the new scheme, the call acceptance control(CAC), UPC, and space priority functions of an ATM network will be more effective in accommodating different traffic mixtures. Therefore the population of low priority cells can be controlled.

플로피 디스크 드라이브의 인터페이스 구현에 관한 연구

남재현,조범석,권기호 명지대학교 공학기술연구소 1987 공학기술연구소 논문집 Vol.2 No.-

Floppy disk drive, as a small and cheap Back up device, is very generalized in existing microcomputer. But the Z-80 series computer which has used the cassette tape drive with sequential access is inconvenient to use because it tends to be slow and make errors. But floppy disk drive with random access is fast and has not almost errors. In this paper, the interface circuit of floppy disk drive which is used as a input/output device in the MZ-80K microcomputer system is designed and experimented. The controller of the interface circuit uses uPD765 and the floppy disk drive mechanism uses TM100-2A of TANDON company.

모델 추종형 적응 퍼지 제어기의 설계

남문현,김낙교,손재현 건국대학교 산업기술연구원 1995 건국기술연구논문지 Vol.20 No.-

In this paper, reference-model following fuzzy controller (RMFFC) was proposed in order to overcome the difficulty of extracting rules and defects of the adaptation performance in the FLC. RMFFC comprised inner feedback loop consisting of the FLC and plant, and outer loop consisting of adaptation mechanism which of the FLC. A Referenced-model was used for design criteria of a fuzzy controller which characterizes and quantizes the control performance required in the overall control system. Tuning control rules of FLC is performed by the adaptation mechanism. For this, the fuzzy model for tuning the control rules is designed in accordance with the feature of error information. Proposed algorithm was verified through simulation for various plant models which have different characteristics. And the results are obtained as follows. 1) Control performance required by a skilled operator was reflected to the control. 2) Unnecessary rule modification did not occur in steady-state, after completion of learning, by using the following error information 3) Performance of RMFFC was improved in various disturbances, comparing with conventional FLC and MRAC.

高性能減水劑를 使用한 高强度콘크리트의 特性에 關한 實驗的 硏究(II) : 강모래·깬자갈을 사용한 경우 In the case of high-strength concretes with river sand and crushed rock

南宰鉉,南相馹 大田大學校 産業技術硏究所 1992 산업기술연구소 論文集 Vol.3 No.1

In this paper, The physical and engineering properties of high-strength concrete with river sand and crushed rock containing superplasticizer are analyzed and investigated. The results are as follows. 1. The water cement ratio of plain concretes with water cement ratio 40∼30% is reduced to 27% without a deterioration of consistency of plain concrete at 0∼3 dosage of superplasticizer. 2. The high compressive strength of 500∼700㎏/㎠ at age of days is got to by water reduction without a deterioration of consistency of plain concrete. 3. The unit water content and the unit cement content of concrete are reduced by 18∼67㎏/㎥ and 63∼24㎏/㎥, respectively, at 0∼4% dosage of superplasticizer by weight ratio to cement. 4. The relation between the compressive strength and the tensile strength is Fo=192Ft at the compressive strength range of 300∼600㎏/㎠

모래층 지반 안벽구조물의 탄성침하거동 연구

유남재,전상현,전진용 江原大學校 産業技術硏究所 2007 産業技術硏究 Vol.27 No.B

This paper is research results of investigating the elastic settlement behavior of the coastal caisson structure built on the sandy deposit by comparing results of centrifuge model experiments and those of existing methods of estimating elastic settlement. Basic soil property tests such as specific gravity test, grain size distribution test and organic content test with disturbed soil sampled from the site were carried out. The centrifuge experiment of model satisfying the required design criteria was performed under 50 of artificial accelerated gravitational force condition. The Centrifuge model experimental results were compared and analyzed with the current methods of estimating settlement based on the elastic modulus obtained from the results of odeometer tests and empirical methods from literature reviews.