AMESim를 이용한 유압 굴삭기용 Main Control Valve의 해석에 관한 연구

임태형,최종환,양순용,이병룡,안경관 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

The hydraulic excavator has been a popular research object for automation because of its multi-workings and economic efficiency. When it works crane tasks, most of disasters happen. The objective of this paper is to design each components and to construct boom, arm, bucket circuit. These models modeled with AMESim show us change of variables and behavior of excavator. Simulation model will be used for simulator of excavator.

實驗大學 實施에 따른 師範大學 學生實態 (Ⅱ)

林在圭,吳岱燮,琴鍾友,李潤樹 慶北大學校 師範大學 1978 敎育硏究誌 Vol.20 No.-

The purposes of this study were (1) to reexamine what were found by the survey on KNU Teachers College Students after the Pilot School Project (Ⅰ) in order to assess the possibility of .generalizing results of the survey across different groups of students who enter Teachers College after the Pilot School Project was implemented, (2) and to examine students' opinion toward the current procedures of assingning freshemen to departments or majors of the Teachers College. The subjects were freshmen of KNU Teachers' College from 1975 to 1777 academic year. However, the data pertaining to the students from 1975 to 1976 had been gathered while the survey on Teachers College Students after the Pilot School (Ⅰ) was being carried out. In order to collect the data with regard to the students entered the Teachers College in 1977, four different questionnaives were employed. The data were statistically tested by means of chi-technique only when it seemed necessary and appropriate. Major findings of this study are as following: (1) After the Pilot School Project was employed, there were general tendency in students' reason applying for admission to KNU Teachers College: Each academic year, approximately 40% of freshmen decided to enter the college to be secondary school teachers in the future. (2) Students' attitude toward the new procedures of screening college applicants, which was employed after the Pilot School Project, were negative in general. Furthermore, their negative attitude became stronger year by year. (3) The degree of students' satisfaction with their majors were relatively higher than that expressed by the students who entered the college before the Pilot School Project was employed. (4) Both students' criteria for selecting their majors and then reasons for changing their majors which they had been interested in applying were varied across time subjects and time. (5) The obtained contingency coefficient between departments and GPA students of each department earned during thir freshmen year was 0.831. It seems to indicate that majority of freshment tends to choose their majors according to their GPA rather than their interest or aptitude. (6) Approximately 67.73% of freshmen of the 1977 academic year accepted the end of the academic year as the most appropriate time for assigning them to departments they desire to enter. 7) Approximately 52.10% of freshment supported the idea of assigningas many students to the departments as they wish to enter, as far as it is possible, by adjusting the capacity of department, which is regulated by MOE. (8) Approximately 61.08% of freshmen claimed not to deduct their GPA when their first choice of department became impossible and turned down to the second or the third one.

京畿西部地域 乳牛의 牛白血病 抗體陽性率에 대한 調査硏究

林贊燮,金泰鍾 건국대학교 동물자원연구센터 1992 動物資源硏究誌 Vol.17 No.-

This survey was carried out to detect the bovine leukosis virus antibody from 223 dairy cattle rearing in Western Kyeonggi area by the agar gel immunodiffusion test using bovine leukosis virus(BLV) glyco-protein antigens. Lymphocytes rates for total white blood cell(WBC) in the BLV antibody positive cattle were also determined with the blood cell analyzer and blood smear stained with Giemsa's standing. The results obtained from this survey were as follows : 1. The overall positive rate was 15.70% in 223 heads surveyed. 2. The infection rate was various depending on the surveyed area, 7.50% (3 heads out of 40 heads surveyed) in Incheon, 4.84%(3 heads out of 62 heads surveyed) in Northern Kimpo, 22.97%(17 heads out of 74 heads surveyed) in Southern Kimpo and 25.53%(12 heads out of 47 heads surveyed) in Siheung area. 3. In the hematological findings, lymphocytes rate(above 70%) for total WBC in the 35 BLV antibody positive cattle was observed at 11 heads(31.43%).

납 中毒된 흰쥐의 血液에 미치는 補中益氣湯의 影響(Ⅰ)

임종필,강창수,강태욱 又石大學校 1995 論文集 Vol.17 No.-

Lead acetate and Bojungiki-tang extract, a herbal restorative were treated p.o. 40㎎/㎏ and 500㎎/㎏ respectively and concurrently to mouse, and examined blood biochemical parameters and effects of metabolic enzymes of rats. The results obtained in this study are as follows: 1. The value of aspartate aminotrasferase(AST) of lead-treated group increased while the group of concurrent administration with BIT showed significant decrease and the value of alkaline phosphatase(ALP) of lead-treated group decreased while the group of concurrent administration with BIT showed significant increase. 2. The value of δ-aminolevulinic acid dehydratase(ALAD) of lead-treated group de creased while the group of concurrent administration with BIT showed significant in crease and the values of cytochrome p-450 in liver and kidney of lead-treated group increased while the group of concurrent administration with BIT showed significant decrease. The differences (%) of aniline hydroxylase and 2-thiobarbituric acid (TBA) of lead-treated group increased while the group of concurrent administration with BIT showed significant decrease. These results on the whole indicated that concurrent administration with BIT showed significant recovery from the toxicity of lead-treated group.

補中益氣湯이 납中毒된 흰쥐의 臟器重量에 미치는 影響

임종필,남궁동,강창수,강태욱 又石大學校 1994 論文集 Vol.16 No.-

Lead acetate and Bojungiki-tang extract, a herbal restorative were treated p. o. 40㎎/㎏ and 500㎎/㎏ respectively and concurrently to mouse, and examined variation of body weigh, accumulation of lead in organs of rats. The results obtained in this study are as follows: 1. Bojungiki-tang extract(BIT) resulted increase of body weight and the increase ratio of body weight in lead-treated group was dropped but the group of concurrent administration with BIT showed significant recovery. 2. The accumulation of lead in liver of lead-treated group increased but the group of concurrent administration with BIT showed significant decrease. 3. The ratio of liver weight/body weight of lead-treated group increased but the group of concurrent administration with BIT showed significant decrease. These results on the whole indicated that concurrent administration with BIT sowed significant recovery from the toxicity of lead-treated group.

액체크로마토그래피/질량분석법을 이용한 랫트 혈장내의 Surfactin C의 정량법에 관한 연구

임종환,김명석,이동연,이상훈,백경진,김태원,정두순,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Surfactin isolated from Bacillus subtilis has a strong surface tension-lowering activity, together with antiviral, antitumor, fibrinolytic and hypocholesterolemic activities. LC/MS is a simple, rapid and effective technique for the determination of surfactin C in rat serum. The separation of surfactin was achieved on reverse phase column. The mobile phase consisted of 0.1% trifluoracetic acid in water (A) and acetonitrile (B). As a result of analysis of blank rat serum samples, matrix interference was not shown. The values of precision and accuracy were satisfied w the guideline. A newly developed LC/MS method for the determination of surfactin C was successfully applied in its pharmacokinetic analysis.

북미자유무역협정(NAFTA)의 출범과 미국노사관계의 변화

임현진,최종철,홍성태 서울대학교 국제지역원 1996 국제지역연구 Vol.5 No.4

탈냉전 시기 미국의 새로운 국제전략은 세계 각국의 불균등한 발전상황을 적절히 이끌어 새로운 팍스 아메리카나의 시대를 열겠다는 명확한 목표를 가지고 있다. 기술 및 산업의 차원에서 이 목표는 정보통신분야의 주도권 장악으로 추진되고 있으며, 세계무역질서의 차원에서는 WTO와 NAFTA의 구축으로 젼개되고 있다. 여기서 NAFTA는 두가지 함을 갖는다. 첫째, 궁극적으로 지구적 지배력을 재구축하기 위한 지역적 발판을 마련하는 것이다. 둘째, 발전도상국과 선진국의 전면적 자유무역이 개신된다는 것이다. 미국 노사관계의 변화와 관련해서는 특히 두 번째 측면에 주목할 필요가 있을 것이다. 그러나 현재 진행되고 있는 미국 노사관계의 변화는 NAFTA 자체보다는 포드주의의 위기와 다른 선진자본주의국과의 경쟁에서 더 큰 영향을 받고 있는 것으로 판단된다. 즉 미국적 노사관계를 대표해 온 뉴딜형 노사관계와 실리적 조합주의의 한계에 대한 인식은 바로 이것들이 기반하고 있는 포드주의에 대한 비판과 대체의 과정에서 필연적으로 나타나고 있는 것이다. 이와 관련하여 NAFTA는 미국의 노동조합이 종래의 보호주의적 외투를 벗어버리고 개발도상국 노동자들과의 연대를 적극적으로 추구해야 할 필요성을 강화한다. 포스트 포드주의를 배경으로 미국의 자본과 정부가 주도하고 있는 실리적 조합주의에서 참여적 조합주의로의 변화에 대해 미국의 조동조합이 얼마나 적극적으로 대처할 수 있느냐의 문제는 새로운 국제적 연대에 얼마나 적극적으로 대처할 수 있느냐의 문제와 깊은 상관관계를 가질 것이다. The international strategies of America in the post cold-war period have the apparent objective that America will open a new pax-Americana age, by leading the unequal developmental situations among every countries in the world. This objective is propelled through holding the initiative in the field of information and communication in terms of technology and industry, and is developed by the establishment of the WTO and NAFTA in terms of the world trade order. Here, NAFTA has two implications; first, preparing for a regional platform so that America will be able to re-establish its global power; secon, the overall free-trade between advanced countries and developingcountries is beginning. With regardto the change of America's capital-labour relations, we need to call our attention to the second aspect. But it seems that the change of America's capital-labour relations in progress is more affected by the competition with other advanced countries than by NAFTA. That is, the recognition of the limits of the New-Deal capital-labour relations up to the present is necessarily emerging in the process of cirticizing and replacing Fordism which is regarded as a basis for both. Accordingly, NAFTA is strengthening its position on the necessity for labour in the US to actively pursue solidarity with unions in developing countries, taking off its old protectionist cloat. As for unions in America, how to cope with the transition from business unionism to participatory unionism which America's capital and government are leading in the back-ground of post-Fordism will be closely related with how actively to pursue a new international solidarity.

CELLULAR 이동체통신 단말기의 송신출력 안정화에 관한 연구

임종민,김태 울산과학대학 1993 연구논문집 Vol.18 No.-

이동 무선 통신에서 통화 써비스 지역을 여러개의 셀(cell)로 나누어 각 셀에는 중앙통제국에서 제어하는 기지국을 두고 이동체 단말기와 통화를 하게 되는데 셀룰라 이동체 통신에서 단말기의 송신출력 안정화 및 효율적 제어는 통화성공율 및 통화품질에 큰 영향을 미친다. 본 논문에서는 이동체 단말기의 송신출력 안정화 및 효율적 제어를 위하여 궤환(Feedback)에 의한 자동출력조절(APC: Automatic Power Control)회로를 설계하여 송신출력의 안정화 및 송신출력의 레벨제어를 효율화하고자 한다. The stability and efficient control of transmitted output power affect on call success rate and call quality in cellular mobile phone. We designed and experimented Automatic Power Control circuit in use of feedback algorithm. Especially, we considered the stability and efficient level control of transmitted output power in this paper.

고교투기종목 코치의 리더십이 지도만족 및 지도 효율성에 미치는 영향

임종호,김진표,김윤태 대전대학교 기초과학연구소 2000 自然科學 Vol.11 No.2

이 연구는 투기종목 지도자의 변화적 리더십과 상통적 리더십이 지도만족 및 지도 효율성에 미치는 영향과 상대적 기여도를 규명하는데 목적이 있다. 연구대상은 투기종목(유도, 태권도, 레슬링, 복싱)의 고등학교 258명을 대상으로 리더십, 지도만족, 지도 효율성을 조사하였다. 수집된 자료는 윈도우용 SPSSV. 9.0을 사용하여 분석하였으며, 변환적 리더십 ? 상통적 리더십, 지도만족 및 지도 효율성의 하위척도에 대하여 다중회귀분석(maltiple regression)을 이용한 경로분석(path analysis)을 실시하였다. 그 결과 다음과 같은 결론을 도출하였다. 1. 변환적 리더십과 상통적 리더십이 내재적 만족을 설명하는 능력은 37.3%이고, 외재적 만족을 설명하는 능력은 57.8%이었다. 그리고 리더십과 지도만족이 지도효율성을 설명하는 능력은 42.5%이었다. 2. 경로도형에서 내재적 만족에 대하여는 카리스마, 개별적 배려, 조건적 보상, 예외적 관리가 유효하고, 외재적 만족에 대하여는 카리스마와 예외적 관리가 유효하며, 지도 효율성에 대하여는 카리스마, 개별적 배려, 조건적 보상, 내재적 만족이 유효하였다. The purpose of this study is to analyze the effects of coaches' leadership styles on players' satisfaction with leadershp and coaching effectiveness. To this end, 258 high school combat sports players were sampled to be surveyed. The collected data were analyzed using SPSS for Windows V 9.0 program to verify the differences of subcategories between schools with the independent determine the causes with the multiple regression analysis. The results of this study are as follows: Two leadership styles' explanatory power of student players' internal satisfaction with leadership was 37.3%, while that of external satisfaction with leadership was 57.8% And leadership styles and satisfaction with leadership explained 42.5% of the coaching effectiveness. On the other hand, as far as internal satisfaction was concerned, "charisma", "personal consideration", "conditional compensation" and "special management" were found significant. And as far as external satisfaction was concerned, such subcategories as "charisma", "personal considerationN, "intellectual stimulation" and "special management" were found significant For coaching effectiveness, such subcategories as "charisma", "personal consideration", "conditional compensation" and "external satisfaction" were found significant.

객체-관계 데이터베이스 응용시스템 설계 및 구현

임종선,주경수,김경수,이상태 순천향대학교 부설 산업기술연구소 1999 순천향 산업기술연구소논문집 Vol.5 No.2

Since 1990s there have been a lot of researches on Object-Relational Database System and Object-Oriented Analysis and Design methods for multimedia application systems. In this thesis, an unified analysis and design methodology for multimedia application systems, which is based on Object-Relational Database System. is proposed. For the unified methodology, both of Rumbaugh's OMT and Object-Relational Data Modeling method are combined and applied. Applying the modeling methodology to a very large system, we can develop an efficient DB system which guarantees the security and the safety. Moreover, this DB system is expected to have long life-cycle if the system is update continuously.