치과기공사의 직업만족도 측정을 위한 설문도구의 개발

오세윤,김웅철,김지환,이병기,유진호,김태석,이준석,이주호 高麗大學校 倂設 保健大學 保健科學硏究所 2002 保健科學論集 Vol.28 No.2

Conflicts between individuals are quite natural and they can act as an positive contributing factor not only to the development of an individual but also to the organization to which one belongs. But too much conflicts will always induce dissatisfaction and stresses, which will be destructive and harmful to all of them, and that is why we are always tying to seek(find) out the causes for the origination of conflicts and remedies to cope with them effectively. The present study, as the first one in a series of studies which our researchers contemplate executing, was designed to develop a measure of job satisfaction for dental laboratory technicians. One job satisfaction measure and two job satisfaction related measures, one for faithfulness for the job and the other for environmental characteristics of dental laboratory were newly developed. The newly developed measures were comprised of a total of 38 items, which were each 12 items for job satisfaction and faithfulness for the job and 14 items for environmental characteristics of dental laboratory With the aid of factor analysis for principal components and categorization of items by panel of professionals, items of each measure were grouped into 2-4 subscales. Contribution to internal consistency was the fina) criterion for an item's inclusion in a subscale. Internal consistency reliability of each item was attested through the statistical analysis on the data obtained from 55 structured questionnaires. Reliability of internal consistency of subscales in each measure of job satisfaction and faithfulness for the job ranged from 0.74 to 0.79 and 0.90-0.91 respectively. The result from this research came to draw the following conclusions. 1. Validity and internal consistency reliability of all the items of each measure was attested. 2. The newly developed measure of job satisfaction was found to be appropriate for (measuring the degree of job satisfaction of) dental technicians, as well as for (other) dental office personnels.

악안면 골격 형태에 따른 교합평면각의 변화에 관한 두부 방사선학적 연구

오세윤,김웅철,김지환,이준석,김진완,유진호,김태석 高麗大學校 倂設 保健大學 保健科學硏究所 1999 保健科學論集 Vol.25 No.1

A correlation analysis was made to understand the interaction between the growth patterns of some craniofacial skeletal components and occlusal plane inclination. 5 angular measurements(S.a. Ar.a, Go.a, UGo.a, LGo.a), 6 linear measurements(ACBL, PCBL, RH. MBL. AFH. PFH) and OP/SN. obtained from 83 cephalometric tracing records, were selected and the relationship between the occlusal plane angle and those measurements were analyzed statistically. Ramus Height(r=-0.55), Posterior Facial Height(r=-0.41), were found to be negatively related with Occlusal Plane angle, while Lower Gonial angle(r= 0.35), Saddle angle(r= 0.24) were found to be positively related with Occlusal Plane angle(p(0.05). The results obtained from the above analysis were further assessed with stepwise regression analysis, using Occlusal Plane angle as a dependant variable, and RH, LGo.a and S.a as explanatory variables. Stepwise regression analysis revealed that all the explanatory variables were found to be significant.(p<0.05) [OP/SN] = -8.74-0.33(RH)+0.23(S.a)+0.20(LGo.a). (R²=0.44). This stepwise regression analysis explains, to some extent, the relationship between the growth patterns of some craniofacial skeletal components and the occlusal plane inclination. 1. The inclination of Occlusal Plane angle is noticeably related with the growth patterns of some craniofacial skeletal components, i.e. RH, PFH, Saddle angle and Lower Gonial angle 2. In high Occlusal Plane angle, the Ram us Height tends to be shorter, and the Saddle angle and Lower Gonial angle tend to be obtuse.

CORBA를 이용한 네트워크 모니터링 시스템의 설계 및 구현

오인환,김지예,엄영익 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1

Network management that has become an important issue for the rapidly growing Internet is actively studied for efficient channel management, particularly for the overloaded ones. For this management, packet monitoring techniques and analysis methodologies based on the monitored packets are fundamental components. In this paper, we designed and implemented network monitoring system that provides users the network status and performance information from the network packets over the channel. The system is implemented in the CORBA environment and written in the Java language in order to provide independence of heterogeneous platforms as well as scalability to various development environments. In particular, this system provides users transparency and convenience for monitoring the Internet because it is implemented in the portable language Java.

열대 지역에서 통일형 초다수성 벼 품종의 생육 및 수량성 비교

이지윤,준현,성환,손영보,송유천,한상익,박동수,권영업,이철원,이종희 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

와동형태의 설계에 따라 치아에 발생되는 응력의 변화에 관한 연구 : 1. 온레이의 경우

오세윤,김웅철,김지환 高麗大學校 倂設 保健大學 保健科學硏究所 1994 保健科學論集 Vol.20 No.1

Because of the anatomical form of posterior teeth, the amount of tooth reduction at the cuspal area in the typical intracoronal cavity will be inevitably maximal, while stress development on the restoration in this area will be relatively minimal. In an attempt to decrease the amount of tooth reduction at the cuspal area, two modified cavities were newly designed in this study. They had a decreased pupal depth of 1mm at the cuspal area and offsets with the depth of 0.5 ~ 1.0mm were formed at the central fossa area. The Von Mises stresses developed in the gold restoratives and in the teeth were compared with that in the typical intracoronal cavity, which had a simple flat pulpal floor with 1.5mm pulpal depth at the central fossa area. Stress analysis was done with two dimensional finite technique. The obtained results were as follows: 1. The newly modified cavity designs were found to be more advantageous in stress distribution. 2. The effect of offset depth was not significant, but some relationship between the offset depth and stress distribution was found.

우리나라 치과 기공사의 건강 습관에 영향을 미치는 요인

오세윤,김웅철,김지환 高麗大學校 倂設 保健大學 保健科學硏究所 1999 保健科學論集 Vol.25 No.1

This investigation was carried out to evaluate the relations between the levels of health practices and their attributable factors in Korean dental laboratory technicians A questionnaire listing six groups of health practices and their related factors was mailed to randomly selected 1,900 dental laboratory technicians. Among them, 1,344 dental laboratory technicians filled out the questionnaires and returned them. Before the start of main survey, a pilot survey was carried out for validity test of the questionnaire. All the data obtained were corded and analyzed with PC/SAS 6.12 program. The level of inappropriate health practices was the highest in irregular exercise(85.3%), and followed by smoking(61.0%), drinking of alcohol(59.1%), irregular eating habits(45.6%), inappropriate sleep duration(32.2%), and obesity(9.4%). Statistically significant factors by multiple logistic regression analyses were sex. work part in obesity: age. work area. number of employees in hours of sleeping: sex, self assessed health status, health examination, work area, work hours in eating habits: sex, marital status, education in smoking : sex in drinking of alcohol : self assessed health status : health examination, work hours in exercise '. and sex, work hours in health practice index. With the above considerations in mind, the levels of health practices in Korean dental laboratory technicians was relatively low and that was attributable to most of the sociodemographic characteristics, health examination and health status and work history. It is suggested that health promotion programs for promoting self-assessed health status, carrying out health examination, reducing work hours, and measures for elevating the level of health practice of male techinicians be necessary.

경인여자대학 등록금 수납관리 운용 등에 관한 연구

오영균,이지환 경인여자대학 1998 경인논집 Vol.- No.7

An Important need of the community and current full time students to which Kyungin women's College responds is continuing access to higher education beyond the typical established patterens of instruction and learning. Through the College of Extended Learning program and modified fee regulation for current enrolling full time students, assistant is given to groups and individuals who seek to improve and update their occupational competencies, as well as enhances their personal enrichment through educational opportunities other then on-campus academic program. However, fee regulation in Korea University and college is not set up completely and there are a lot of problem to solve. Not only this College of Extended Learning program but on-campus regular academic program, have not research the system of part and full time fee regulation, In this research, we provide all fee information of Korean college regulation and several college in America.. As a result, we can suggest several case of fee regulation for full time student. College of Extended Learning program students and incoming students in Kyungin Women's College.

와동형태의 설계에 따라 치아에 발생되는 응력의 변화에 관한 연구 : 인레이의 경우

오세윤,김웅철,김지환,유진호 高麗大學校 倂設 保健大學 保健科學硏究所 1995 保建科學硏究論集 Vol.4 No.1

Because of the anatomical form of posterior teeth, the amount of tooth reduction near the marginal ridge area in the typical, widely used intracoronal cavity will be inevitably maximal, while occlusal forces on the restoration in this area will be relatively minimal In an attempt to dicrease the amount of tooth reduction at the marginal ridge area, a modified cavity for inlay with a uniform depth of 15mm, just as in amalgam filling was designed in this study. To analize the stress development in the teeth in that cavity design, 2㎏/㎟ distributive forces were applied on the inlay restoratives and obtained results were compared with that in the typical cavity design which had a flat pulpal wall with a depth of 1.5m at the central fossa area. Analysis was done with two dimensional finite technique. The obtained results were as follows : 1. The patterns of stress distribution and displacement showed no apparent differences. 2. The stress values and the amount of displacement developed, both in inlay cast gold and in the teeth, in the cavity with a uniform depth were less than that in the cavity with a flat pulpal wall. 3. Greatest maximum principle values were concentrated around the interface between the base of inlay body and the teeth.

국내 의료기관의 항생제 사용 실태와 규제 시스템 조사

방지환,송경호,박완범,김성한,조재현,김홍빈,김남중,오명돈,최강원 대한감염학회 2006 감염과 화학요법 Vol.38 No.6

목적 : 이전 연구들에 따르면 아직까지 국내에서 불필요한 항생제 사용은 무시할 수 없는 수준이며, 특히, 수술환자들에 대한 예방적 항생제 투여가 문제로 지적되고 있다. 많은 병원에서 불필요한 항생제 처방을 제한하려는 노력을 하고 있지만 구체적인 현황에 대한 자료는 적은 실정이다. 이에 본 연구자 등은 국내 의료기관의 항생제 규제 시스템의 현황과 수술시 예방적 항생제 사용의 적정성을 알아보고자 한다. 재료 및 방법 : 전임 감염내과 전문의가 근무하는 의료기관 55곳에 대해 설문조사를 시행하였다. 설문의 내용은 적정한 항생제 사용을 유도하기 위한 정책 및 규제 프로그램, 실제 각 의료기관의 예방적 항생제 사용 현황 등으로 이루어져 있다. 결과 : 55개의 의료기관에 보낸 설문 중 44개가 회수되었다. 회신한 의료기관에서 항생제 처방 관리는 제한항생제 시스템을 가장 많이 이용하고 있었고(95.5%), 항생제에 대한 교육(79.5%), 전산시스템에서 관리(59.1%), 감염내과에 의뢰(54.5%), 항생제 사용 실적 검토(52.3%) 등의 순이었다. 대개의 병원에서 glycopeptides (100.0%), carbapenems (93.0%), quinupristin/dalfopristin 또는 linezolid(93.0%), 4세대 cephalosporin (74.4%), caspofungin 또는 voriconazole (62.8%), liposomal amphotericin B (60.5%) 등을 제한항생제로 분류하여 관리하고 있었다. 모든 의료기관에서 위절제술 및 유방절제술시에 불필요하게 예방적 항생제를 사용하고 있었다. 슬관절치환술의 경우 2세대 cephalosporin을 예방적으로 사용하는 경우가 가장 많았으며(30.2%), 관상동맥우회술의 경우 3세대 cephalosporin을 예방적으로 사용하는 경우가 가장 많았다(47.2%). 예방적 항생제의 투여 기간을 살펴보면 위절제술시 70.5%에서 4일을 초과하여 사용하고 있었고, 유방절제술시에는 63.6%에서, 슬관절치환술시에는 81.8%에서, 관동맥우회술시에는 81.1%에서 4일을 초과하여 장기간 예방적 항생제를 투여하고 있었다. 한편, 예방적 항생제 투여시 aminoglycoside계 항생제를 병용하는 경우도 많았다. 결론 : 아직까지 국내 의료기관에서 항생제 오남용을 막기 위한 노력이 더 필요할 것으로 생각되며, 특히 수술시 예방적 항생제의 올바른 투여에 많은 관심이 필요하다. Background : Previous studies in Korea showed that unnecessary antibiotic use could not be neglected, especially in prophylactic use. Currently many hospitals employ diverse antibiotic stewardship programs, but there are few studies on surveillance of such programs. So, we planned this study to evaluate current status of antimicrobial stewardship and adequacy of antimicrobial prophylaxis in surgery. Materials and Methods : We sent questionnaires about policy on antibiotic usage, control program for adequate antibiotic prescription, and actual status of prophylactic antibiotic usage to 55 infectious disease physicians in each hospital. Results : Of 55 contacted infectious diseases clinicians, 44 answered the questionnaire. Majority of hospitals employed restricted antimicrobial system (95.5%), education (79.5%), control by order communicating system (59.1%), consult to infectious disease physicians (59.1%), and review of cumulative antimicrobial usage (52.3%) to prevent inadequate antibiotic use. Glycopeptides were designated as a restricted antimicrobial agent in 100.0% of hospitals; carbapenems, 93.0%; quinupristin/ dalfopristin or linezolid, 93.0%; the 4th generation cephalosporins, 74.4%; caspofungin or voriconazole, 62.8%; liposomal amphotericin B, 60.5%, and so on. Unnecessary perioperative prophylactic antimicrobial agents were prescribed in gastrectomy and mastectomy in all the hospitals. The second generation cephalosporins and the third generation cephalosporins were the most commonly prescribed prophylactic antimicrobial agents in total knee replacement arthroplasty (TKRA) and coronary artery bypass graft surgery (CABG) respectively. In 70.5% of institutes they use prophylactic antimicrobial agents more than four days in gastrectomy; 63.6% in mastectomy; 81.8% in TKRA; 81.1% in CABG. Unnecessary combination of aminoglycosides with other antimicrobial agents for prophylactic use was another common problem. Conclusion : This study shows that more effort is required to diminish antimicrobial misuse or overuse, especially in prophylactic use for surgical patients.

상아질 접착제의 중합 시간 조절에 따른 복합레진의 중합 수축 방향의 변화

배지현,오명환,김창근,손호현,엄정문,조병훈,권혁춘 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4

The purpose of this study was to evaluate the effect of adhesive curing timing on the direction of polymerization shrinkage of light-curing composite resin. In this study, the curing times of adhesive and composite resin were measured by differential scanning calorimeter(DSC). 28 extracted human molars were embedded in clear resin and box-type cavities were prepared. Based on DSC data. the experimental teeth were divided into 4 groups. Group 1: no bond: Group 2: late curing: Group 3: Intermediate curing: Group 4: Early curing. After treating with adhesive, the buccal cavities were filled with Z-100 hybrid composite resin and the lingual ones were filled with AEliteflo flowable composite resin. The depressions at the surface were measured by surface profilometer, then the specimens were embedded in clear resin and sectioned. Impressions were obtained and used to get epoxy resin replicas. The epoxy replicas were gold-coated and observed under SEM. Average Maximum Gap(AMG), Gap Proportion(GP), Average Marginal Index(AMI) were used to compare the shrinkage gap of each group. The results were statistically analyzed using the Kruskal-Wallis One Way ANOVA, Student-Newman-Keuls method. The results of this study were as follows. 1. Average Maximum Gap. Gap Proportion, Average Marginal Index and depression at the surface of Z-100 hybride composite resin were smailer than those of AEliteflo flowable composite resin(P(0.05) 2. When the bonding between composite resin and tooth structure was strong, the shrinkage gap was small, and depression at the surface was deep(P<0.05). 3. In the well-bonded group. light-curing composite resin shrank toward bonded cavity wall. not toward light source. The result suggested that the direction of polumerization shrinkage was affected by the quality of bonding in the dentin-resin interface. The strong was the bonding between composite resin and tooth structure, the smaller was the gap and the deeper was the depression at the surface. Then the flow to compensate the polymerization shrinkage proceeded from surface to bonded cavity wall.