Glass 용해로 공정의 안정화 검증 및 방안에 관한 연구

조진형,구자활 금오공과대학교 2006 論文集 Vol.27 No.-

As tools to improve productivity and quality, SPC(statistical process control) and Af'Ctautomatic process control) are used in the instrumental process. In process, we know that a statistical control-in is identified with a process of random variables being independently and identically distributedriid). It IS often difficult in practice to attain a statistical control-in because of systematic time series effects like autocorrelation. When the data are autocorrelated In a process, as the diagnosis, we can use ARIMA procedure. In this thesis, a procedure is introduced to diagnose and identify a statistical control-in/out using ARIMA.

질화규소와 베어링강의 미끄럼 마모형태도

김형자,최형순 釜慶大學校 1998 釜慶大學校 論文集 Vol.3 No.2

The tribological properties of silicon nitride in unlubricated sliding contact were investigated using a ball on disk wear apparatus at room temperature and normal load. The tribological behaviour can be classifled into two groups as follows : (1) The wear state of silicon nitride ball is divided into 3 parts, the formation of minute irragular surface resulted from plastic flow rupture, the formation of fracture surface of grain boundary and the formation of slippery surface resulted from chemical reaction. (2) The frication from of bearing steel disk is divided into 4 parts, the formation of the surface that the surface layer is shed resulted from friction wear, the formation of the surface that the microscopic friction particles are accululated resulted from corrosive wear and formation of surface that the slippery oxide tunic is created.

순화슬러지와 생슬러지로 본 질산염제거특성

조순자,정용주,이나은,이정은,손형식,이상준 부산대학교 환경문제연구소 2003 環境硏究報 Vol.21 No.-

Using acclimated sludge with inorganic nitrogen medium for three months and non-acclimated sludge, raw sludge, under aerobic condition we investigated characteristics biological nitrogen removal. As results, e acclimated sludge under aerobic condition accomplished nitrification efficiently. But the samples from the reactor operated raw sludge had higher ammonium concentration rather than the concentration which was loaded by the medium. This means when we are trying to reorganize existing facilities, we should take high initial ammonium concentration into account.

묵은 김치 제조과정에서의 이화학적 및 미생물학적 특성 변화

유맹자,김형량,정희종 한국식생활문화학회 2001 한국식생활문화학회지 Vol.16 No.5

To develop the low-temperature and long-term fermented kimchi, kimchi was prepared according to the recipe of a specific ratio of major and minor ingredients and adjusted its salinity to 3.7%. Prepared kimchi fermented at 15±1℃ for 24 hours and transferred and fermented in a refrigerator only used to make low-temperature and long-term fermented kimchi at -1±1℃ for 30 weeks. During 30 weeks of fermentation the changes in physicochemical and microbiological properties of low-temperature and long-term fermented kimchi were studied. The initial pH of 6.47 decreased gradually and dropped to pH 4.0 after 14 weeks of fermentation, and then it maintained at same level. Acidity increased to 0.49% on 2 weeks of fermentation and kept at 0.47∼0.50% during 2 to 30 weeks fermentation. Salinity was slightly increased at early stage and started to decrease on 4 weeks of fermentation, and then it did not change. The change of reducing sugar content was closely related to the trend of pH change with a very high correlation coefficient(r=0.912). Lactic acid, citric acid, malic acid, succinic acid and acetic acid were major organic acids contained in low-temperature and long-term fermented kimchi. Vitamin C content decreased at initial stage of fermentation and then slightly increased up to the maximum of 22.3㎎% on 8 weeks of fermentation. In color measurement, L value continued to increase during the fermentation and reached at the highest of 55.45 on 22 weeks of fermentation, and a and b values of 3.62 and 4.54 also increased to 31.26 and 37.32 on 30 weeks of fermentation, respectively. Total microbial count increased slowly from beginning and was the highest on 4 weeks of fermentation, and then began to decrease slowly. Count of lactobacillus spp. was highest after 6 weeks, but count of Leuconostoc spp. was highest on 2 weeks of fermentation, and then both showed a slow decrease. Yeast count wasn't increased until 4 weeks of fermentation and then increased rapidly to get the highest on 10 weeks of fermentation.

韓國 看護大學 敎育課程에 對한 硏究

文姬子,金潤喜,趙潔子,趙美映,姜賢淑 慶熙大學校 1982 論文集 Vol.11 No.-

The changes of social issues and nursing concepts require the expansion of nursing needs and nursing role, therefore it is keenly demanded the necessity of the research for new curriculum development in nursing. So to make a contribution to the development of nursing education in Korea, we made a comparative study of nursing curriculum of each universities which have baccalaureate program and put them into operation at present; they are 10 Korean universities, 5 American universities and 4 Japanese Universities. Thus by researching the differences among them. We acquired the conclusions as followings. The purpose of Nursing education In case of Korean parts, the contents of those aims must be explained more clearly and more in detail than another results of research. There also has to be made the statements upon the scientific researching methodology in scholarly respect, or the self-development in individual respect, or the lasting endeavour for studies in professional respect. We must put an emphasis upon the statement and education of the direct nursing provider, or the primary health care manager at hospital and community, who is one of the important aims of modern nursing education. The substance of nursing curriculum. 1) Total credits for completion and the comparison of curriculums, classified by the field. The scope of total credits of each nation, according to Colleges ranges; Korea: 140-163, U.S.A.: 121-187, Japan: 13-158 Compared with those of U.S.A. and Japan, the average credits of Korea is higher. Classified by the field, the credits alloted to major courses are 73.3% and liberal courses, only 26%, which shows that it does not satisfy the current educational trend that emphasizes the liberal course. 2) The comparison of curriculums, classified by a school year. In case of Korea, the total credits are evenly assigned to all grades, but the freshman taken the concentration of liberal courses (81.2%). Among the major courses are preponderant the Nursing Supportive subjects in the sophomore and the nursing major ones in the junior and senior. 3) Curriculums classified by the subject. (1) As compared with those of Japan and U.S.A. Korean students are less free in chosing subjects their own way all over the curriculums. It is, therefore, required that the range of the optionals be widened for the open and flexible education. (2) We can find all of three nations (Korea, Japan, U.S.A.) neglect the sphere of the behavioral sciences among the fundamental nursing subjects. In the field of social sciences, among Korea, Japan, and U.S.A., top ranks Japan that tends of the interested in social well-being. In Korea only two universities have this subjects. (3) Nursing major subjects. Defficulties in comparing them lie in the gulfs of the title of subjects, and the structural differences of the formation of curriculums among nations. In case of Korea, although there are a few differences of the number of credit of subjects among colleges, she has uniform aspects for U.S.A., which says that there are no characteristics and self-control each colleges has in Korea. We can notice that the subjects each Korean university shares are also doubled with those of the national examination for nursing qualification. Japan differs from Korea in that subjects are more differentiated and students are provided with more chances to make a choice through the system of subjects and the texture of a curriculum are similar to those of Korea. In case of Korea, therefore, the unification of fundamental subjects (especially in the medical field) and clinical practices is required. (4) The course for teaching profession is taken as either the required or optional just in Korea (80%) and Japan (75%). The number of subjects and total credits of teaching courses is different according to the colleges of Korea and Japan. As for the contents of subjects Korea deals with theory and Japan, the practical thing with which students can adjust themselves to the spot of society. As a result of that, in case of Korea, demanded are the entire review and research upon the purpose of establishing a curriculum, its relation to the total credits and the choice of substance of subjects etc. 4) The patterns of organization in curriculum development. Most of the patterns of organization, classified by clinic subject pivot upon disease and subjests are not mutually unified in case of Korea and Japan. Though the patterns of organization of subjects if formally unified, that of curriculums is not substantially or wholy synthesized, while in case of U.S.A. the unification of the patterns of organization entire curriculum as well as the mutual unification of subjects is attained and each college runs a characteristic curriculum, since the application of nursing theory and the model of a curriculum are different according to college. The prevention of disease, the promoting health and the disease system is patterned, centering around the healthy and their families. Therefore, in case of Korea, it is urgent to unify the curriculum of nursing education for the efficiency of the future oriented nursing education, and it is also imminent to develop the new pattern of a nursing curriculum suited for our own social demand and situation. And we need the continuous studies and search for the method of application in order to development the new curriculum. The comparison of a curriculum with the purpose of nursing education. The substances of subjects are not consistently in accord with the aims of nursing education each college states in Korea, Japan and U.S.A. Especially in case of Korea, the most statements upon the purpose of education are in the social dimension, but the most subjects have the academic dimension. In Korea it is stringent to examine and study the choice of the contents of education in terms of learning, profession, individual and society.

TiAIN을 코팅한 WC공구의 절삭성능에 관한 연구

김현자,최현철,김영대,김일선,노태영,이규용 釜慶大學校 2001 釜慶大學校 論文集 Vol.6 No.-

Thin film of TiAlN was deposited onto ISO P20 tungsten carbide cutting insert tip substrate specimen using the FVAS (filtered vacuum arc system) at the substrate temperature of 80℃. Cutting and wear tests have been performed to the TiAlN coated and uncoated WC specimen, respectively under the same cutting conditions for the comparison. Cutting forces and tool wear of coated and uncoated carbide cutting tools were investigated by means of cutting length and cutting forces. Also tool wear and tool life were analyzed using the 3ch tool dynamometer amp lifier and oscilloscope. In this study cutting tests for the cutting performance of TiAlN coated WC-Co P20 to the steel alloy of SNCN420 have been curried out. Through the comparisons of cutting forces during the cutting tests and tool wear, we got the conclusions as follows.; ① In usual cutting conditions, main cutting force component showed higher value than the thrust force normal to the cutting direction especially cutting forces in the of early stage on cutting tests. But, after loosing the protective hard thin film on substrate or insert tip, the thrust force normal to the cutting direction showed much higher than main cutting force component. ② Within the range of 0.3㎜ build up edge in P20 insert tip, TiAlN coated tip was evaluated more stable in flank wear and less in crater wear than the uncoated specimen. ③ Through the wear growth curve of the specimen, tool life differences of uncoated and TiAlN coated tip at high speed (V=250[m/min]) was higher than the low speed(V=200[m/min]) case, compared to the average but the tool wear was almost same in both specimen for the case of normal wear occurred.

知覺된 學級風土와 自我槪念이 學業成就에 미치는 影響

權炯子 관동대학교 1997 關大論文集 Vol.25 No.1

The purpose of this study was to investigate the effects of perceived classroom climate and self-concept on the school achievements of elementary school children. To achieve this purpose, 420 sixth grade students were sampled in Seoul city and local city. The collected data were analyzed by correlation and oneway analysis of variance. It was found that there were statistically significant positive correlations between perceived claaroom climate and self-concept of children. And, there were statistically significant differences in the school achievements among perceived classroom climate group. Finally, there were statistically significant differences in the school achievements among self-concept group. Specifically, there were statistically significant differences in the school achievements among academic self-concept group, but there were no statistically significant differences in the school achievements among non-academic self-concept group.

建築設備工事의 施工性 向上에 관한 硏究 : 설비전담부서의 설치 필요성을 중심으로

조형근,구자두 호남대학교 1998 호남대학교 학술논문집 Vol.19 No.2

Recently construction has become large in scale, high, complex, diverse, and professional, and its consumers demand improved quality in living environments, design and construction in building services must improve in precision. However, quite often people who carry out building services works do not prepare design documents, and poor construction with defects occur in construction site many times. To address this matter, I have conducted a questionnaire survey with students in Honam Construction Engineering Education Center and officers and students in Army Engineering School for this study. The survey is about causes of poor construction that are requirement of employing specialist of building services, setup of a service department related with the matter. After the collected guestionaire data divided according to the kinds of major business and qualification educational background work experiences, the requirements of setup of a department exclusively responsible for building services and employment of relative specialists are analyzed. Base on the above results, to suggest basic methodology of constructability improvement of building services works.

母兒의 早期接觸이 母의 愛着行爲에 미치는 影響에 관한 硏究

李滋衡,金眞香 梨花女子大學校 韓國生活科學硏究院 1981 韓國生活科學硏究院 論叢 Vol.28 No.-

모아의 조기 접촉이 어머니의 애착행위에 미치는 영향을 알아보기 위해 분만후 부터 퇴원시 까지 신생아와 육체적 접촉이 없었던 산모와 분만후 24시간내에 의도적으로 첫접촉을 시도한후 퇴원시 재접촉한 산모사이에 신생아에 대한 애착행위의 양상을 확인하였다. 1. 동일시 행동에서는 아기상태와 상태의 변화에 대해 재접촉한 산모의 반응이 높았다(P<0.01). 2. 상호작용의 양상은 시각적 접촉과 피부 접촉시 재접촉한 산모에게서 보다 진전된 반응이 나타났다(P<0.01). 3. 돌보는 행동은 재접촉한 산모들이 신생아의 요구를 확인할 수 있고, 퇴원을 위한 준비가 잘되어 있었다(P<0.01). The purpose of this study was to investigate the significance of maternal infant attachment with an emphasis upon the physical contact between a other and an infant during 24 hours of the postpartum period. Interest in this early postpartal experience was stemmed from our experience as a nurse with the newly delivered mothers and their infants. The usual postpartal care routine requires that the mother be separated from her infant. Early physical contact might have different effects between the two groups of mothers in the following three areas: 1. Identifying behaviors: Verbal statements about the infant's condition amd awareness of the changes (P<0.01). 2. Modalities of the interaction: Stimulation of the infant to open eyes (P<0.01). and fingertip touch, palm touch and touches of the baby's body(P<0.01). 3. Caretaking behaviors: Recognition of the infant's needs (P<0.05) and preparation for the infant's discharge (P<0.01).

기관내 삽관 후 발생한 기관 괴사와 협착증 : 증례보고 A case report

권진형,구자욱,유시현 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Tracheal necrosis and stenosis are rare complications of prolonged endotracheal intubation. A 62 years old female was performed cerebral aneurysmal neck clipping under general anesthesia via endotracheal intubation and transferred to the 12th intensive care unit. The patient was mechanically ventilated and tracheostomy was done on the postoperative day. Necrotic tissue, pus and stenosis were found around the ballooning site of the trachea. T-tube insertion was done on the both postoperative day and the patient was discharged on the 80th postoperative day.