위절제술 환자의 표준진료지침 개발 및 적용 효과

김은희,김철규,이순교,김순덕,이혜옥,권정순,이경미,이민미,심순미,유용만,신종식,강은희,이상일,김병식,오성태,육정환,박수길 한국의료QA학회 2003 한국의료질향상학회지 Vol.10 No.2

Background : Gastric cancer is the most common malignant tumor in Korea. surgical operation is one of the major treatment modalities for gastric cancer patients. Therefore, gastrectomy is one of the most common procedures in General Surgery. There were variation in length of hospital stay and medical treatment for gastrectomy between three surgeons at Asan Medical Center. Clinical pathways have received considerable attention as a tool for recucing the medical practice variation, increasing the efficiency of care process, and improving the quality of care. The aim of this study was to evaluate the effect of a clinical pathway for gastrectomy in gastric cancer patients. Methods : The clinical pathway for gastrectomy was developed and implemented by a multidisciplinary group in Asan Medical Center. A computerized clinical pathway program was developed and revised after a pilot test. A total of 145 patients underwent gastrectomy by three surgeons at Asan Medical Center. We compared the length of hospital stay, patient satisfaction, and unplanned readmission rate between the pre-pathway group(n=67) and the post-pathway group(n=78). We also investigated the degree of satisfaction among the physicians and nurses who were main end-users of the clinical pathway. Results : The clinical pathway was applied to all target patients. The average length of hospital stay was shortened from 12.7days to 10.6days(p<0.01). The degree of patient satisfaction with the care process changed from 90.3% to 89.2% after the implementation of the clinical pathway, but the difference was of satistically significant(p=0.761). Unplanned readmission rate was 2.9% in the pre-pathway group. More than 90% of physicians and nurses answered that the clinical pathway had been a useful tool in their medical practice. Conclusions : The findings of the study demonstrated that implementation of the clinical pathway for gastrectomy produced substantial reduction in the length of hospital stay while improving the quality of patient outcomes. The computerized clinical pathway program can be used as one of the powerful patient management tools for reducing the practice variations and increasing the efficiency of care process in Korea hospital settings.

중학생의 가정과교사 특성지각과 가정과 수업을 통한 인성적 도덕성

김성교,채정현 대한가정학회 2003 Family and Environment Research Vol.41 No.10

The purpose of this study is to investigate the relationship between home economics teachers' characteristics and middle school students' affective morality through Home Economics Instruction. The affective morality of middle school students after taking home economics classes were assessed and investigated as to what sorts of affective morality there were and to find out what level they were. Further, what factors affected the affective morality of middle school students considering the variable factors of home economics teachers. 800 first year male and female students of 17 middle schools located in Cheonju and Cheongwon were selected through non-random or accessible sampling. The frequency, precent, mean and standard deviation, correlation, t-test, and one-way ANOVA, and multiple regression of these data were obtained by using the SPSS 10.0 for Windows Program. The result of this study were as follows: First, basic etiquette was the most important rated the highest among the affective morality, nature preservation turned out the lowest in each questionnaire. Learned in home economics, it was considered the highest goal; Second, in terms of character and affective morality of middle school students, male students ranked higher than female students and the students with a better academic performance record, and those who engaged in club activities showed better results in affective morality as did students with religious beliefs and students with better educated parents and also students from homes with better financial situations. Third, in terms of students' perception of home economics teachers with a good nature turned out the highest, teaching ability and career awareness and also reflected at the m e level. Fourth, students' perception of home economics teachers' characteristics and their affective morality are turned out correlated with each other. The correlation of home economics teachers' career awareness and compassion . devotion . service morality proved to be the highest. Fifth, the affective morality of those students who do community service, club activities and those who are interested in home economics and who respect home economics teachers tended to be high.

스크류유량계 개발에 있어서의 역공학 및 성능평가에 관한 연구

김종윤,황종대,이상열,정윤교 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

This research presents a modeling and a manufacturing method of screw type flow meter. This paper introduces the efficient design and manufacturing method of screw type flow meter using reverse engineering and test technology. The methods introduced this paper utilize the reverse engineering that is increasing accuracy of modeling and manufacturing of reverse model. And then it can be used in performance test with hydraulic test equipment. Hence this can be used in the basic document for development of the quite accurate flow meter.

한·일 중학생의 식생활 비교연구

김성교,한재숙 한국 가정과 교육 학회 2002 한국가정과교육학회지 Vol.14 No.2

The purpose of this study was to investigate eating habits, nutritional knowledge and the active use of information from the eating habits chapter of the textbook by middle school students of Korea and Japan. 9th grade students of 7 middles schools residing in Gyeongju and Hukuoka, japan(592 Korean students, 546 Japanese students) participated in this study. Research data were collected by means of questionnaires and analyzed by such means as frequency, percentage, means, standard deviation, χ^2-test, t-test, F-test and Pearson's correlation analysis employing SPSS Program. The results of this study were summarized as follows: 1. In terms of the physical features of middle school students, the height of Korean students tend to be taller than Japanese students. The weight of Korean students are on the average heavier than Japanese students. Research also proves that Japanese families have more family members. Korea has more full time housewives as well. Regarding their health, Korea has more people who consider themselves healthy than Japan does. 2. More students in Japan tend to eat breakfast and dinner everyday compared with Korea. Students eat snacks at night more in Korea than Japan. The average meal takes less than 20 minutes in Korea. It takes less than 30 minutes in Japan. Dinner is considered to be most important meal by the students of Korean and Japan. Meat, noodles, bread and cake are highly enjoyed by the students of both nations. 3. There was a little difference between Korean and japanese students, concerning the necessity of nutrition education because they both study home economics. 4. The use of information from the textbook shows, most students eat green vegetable almost everyday but Korean students tested as eating more Japanese students more often say they drink more than a cup of milk everyday. The Japanese students have higher rates of using information from the textbooks, drink milk everyday, eat bean soup, eat a lot of meat and fish. 5. It turns out that students who have more nutritional knowledge have a low late of eating convenience food and student who utilize the chapter in the textbook in everyday life have low rates of eating convenience food.

PHC 말뚝의 하중전이실험을 통한 참 지지력의 산정

김성렬,정성교 東亞大學校 建設技術硏究所 2007 硏究論文集 Vol.31 No.1

Although a number of static pile load tests have been performed in this country, re-consideration on the interpretation and loading methods is needed, because of their less usefulness in practice. For this study, a static loading testing was performed for a long instrumented PHC pile, which was installed in asnd layer overlying thick soft clay. The shaft resistance of the pile had been monitored for a long time after installation, and then the static load testing was performed by the quick load test, unlike the recent Korean practice. Using the measured data, the elastic modulus of pile, residual stress and true resistance on the pile were determined. In the event, it was found that the residual stress on the pile, which remained prior to the static loading, significantly affects the shaft and toe resistances. Also, it was realized that the setup effect for the long pile is significant.

표면개질 실리카막을 이용한 CO_2 선택투과분리

김성수,최현교,박홍채,김태옥,서봉국 한국환경과학회 2000 한국환경과학회지 Vol.9 No.4

To improve CO_2 permselectivity, a modified silica membrane was prepared by chemical vapor deposition with tetraethoxysilane(TEOS)-ethanol-water, and TEOS-ethanol-water-HCI solution at 300-600℃. The silica was effectively deposited in the mesopores of a γ-alumina film coated on a porous α-alumina tube by evacuating the reactants through the porous wall. In this membrane, CO_2 interacts, to some extent, with the pore wall, and CO_2/N_2 selectivity then exceeds the value of the Knudsen diffusion mechanism, while the membrane derived from TEOS alone has no CO_2 selectivity. The silica membrane prepared from TEOS-ethanol-water-HC1 solution showed that CO_2 permeance was 2.5×10 exp (-7)㏖/s^-1. m^-2. Pa^-1 at 30℃ and CO_2/N_2 selectivity was approximately 3. The CO_2 permeance and selectivity was improved by enlarging the surface diffusion with modification of chemical affinity of the silica pores.

퇴적암반 활동지역에서의 활동 메커니즘에 대한 연구

정교철,김진성 안동대학교 환경연구소 2001 환경연구 Vol.1 No.-

The area under investigation for the past ten years is in the vicinity of the Imha dam. The area is excavated for construction of new road in 1989. Differential heave in one part of the area is occurred and differential subsidence and cracking in another part are took place because of the road construction. The rocks involved are sandstone, shale and mudstone. Geotechnical and surveying techniques have been used to analyze slope instability in the past but without solving the problem of the mechanism of the these failure processes. Geophysical methods (electric resistively method and seismic prospecting method) were applied in order to identify underground geology and geological structures. The interpretation of these slope failure studies is not a straightforward analysis, but the general conclusion is that the complexity of a slope failure requires a complex investigative approach by using a combination of different geophysical methods and geotechnical methods.

점성토(c-Ф 흙)로 뒤채움된 중력식 옹벽에서 인장규열을 고려한 수평토압 : 배수해석

정성교,남선우,김문규,오병수 東亞大學校 建設技術硏究所 1997 硏究論文集 Vol.21 No.2

Coulomb’s theory has been usually used in practice for design of retaining walls. This theory assumed that the lateral earth pressure was a triangular distribution, because the point of applying the thrust could not be abtained straightforward. However, the results of laboratory and filed tests proved that the lateral earth pressure was not a triangular distribution. In this study, for gravity walls with inclined backface, backfilled by c - ø soils with inclined surface, an analytical method for earth pressure has been derived. This method applied the flat arching concept and the Coulomb’s wedge, under drained condition, for the cases of considering tension crack. In addition, this paper is dealt with comparing the new analytical solution with existed theories for some cases.

연삭의 채터 발생과 연삭 숫돌 수명의 연관성에 대한 실험적 고찰

이상태,이재환,정윤교,김재실 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.5

The chatter to raise grinding operating is reduce the precision and the quality. In this study, In reply to AE signal and the normal force generated in the grinding operating were measured (1) the amplitude in the mathematical model of the normal force is the form as to transform an exponential (2) the chatter growth is minus point of an exponent. (3) From the observed wheel aspect after the chatter growth, it was to investigated the concern of the chatter growth and the wheel life.

점성토(c-ø흙)로 뒤채움된 중력식 옹벽에서 인장균열을 고려한 수평토압 : 배수해석 Drained Analysis

정성교,남선우,김문규,오병수 동아대학교 건설기술연구소 1998 硏究報告 Vol.22 No.1

Coulomb's theory has been usually used in practice for design of retaining walls. This theory assumed that the lateral earth pressure was a triangular distribution, because the point of applying the thrust could not be abtained straightforward. However, the results of laboratory and filed tests proved that the lateral earth pressure was not a triangular distribution. In this study, for gravity walls with inclined backface, backfilled by c-ø soils with inclined surface, an analytical method for earth pressure has been derived. This method applied the flat arching concept and the Coulomb's wedge, under drained condition, for the cases of considering tension crack. In addition, this paper is dealt with comparing the new analytical solution with existed theories for some cases.