비정상 유한요소법을 이용한 고속응답 솔레노이드 밸브의 동적거동해석

권기태,한화택,Kweon, Gi-Tae,Han, Hwa-Taik 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.7

It is intended to develop an algorithm for dynamic simulation of a fast-acting solenoid valve. The coupled equations of electric, magnetic, and mechanical systems should be solved simultaneously in a transient nonlinear manner. The transient nonlinear electromagnetic field is analyzed by the Finite Element Method (FEM), which is coupled with nonlinear electronic circuitry. The dynamic movement of the solenoid valve is analyzed at every time step from the force balance acting on the plunger, which includes the electromagnetic force calculated from the Finite Element analysis as well as the elastic force by a spring and the hydrodynamic pressure force along the flow passage. Dynamic responses of the solenoid valves predicted by this algorithm agree well with the experimental results including bouncing effects.

노년내과 심포지엄-노인질환의 예방 : 새로운 예방접종: 대상포진, 폐렴사슬알균

권기태 대한내과학회 2013 대한내과학회 춘계학술대회 Vol.2013 No.-

A Study on the Strategic Vitalization Plan of Korean Integrated Medical Tourism

권기태,김화경 대한한의학회 2013 대한한의학회지 Vol.34 No.2

Objectives: As a newcomer to the medical tourism industry, Korea needs to differentiate itself from the leading competing countries to vitalize its early-stage medical tourism industry. This study aims to introduce a strategic plan to vitalize the Korean integrated medical tourism so that Korea can differentiate itself from competing countries and create high added value. Methods: The concept and actual conditions of medical tourism and Oriental medical tourism were examined. A plan to differentiate Korea from the competing countries in the medical tourism industry was studied to create high added-value through strategic vitalization of its medical tourism industry. Results: Korean integrated medical tourism must be developed differently from those of other South-East Asian countries in order to strategically promote the cash-cow medical tourism industry. In order to develop such medical tourism, Korean medical practice, which integrates Western and Oriental medicine, is to be developed through mutual understanding and fusion of other disciplines among medical doctors and Oriental medical doctors who are working in local healthcare for health promotion of local residents and disease prevention and control. This will play a key role in developing a unique medical tourism product of Korea by means of strategic alliances as an integrated medicine. Manpower specialized for integrated medicine is to be specially supplied for Oriental medicine-related business lines at city, county and borough levels, among local governments, that are enthusiastically carrying forward Oriental medical tourism with an interest to promoting more active and strategic business development and raise the effectiveness and efficiency of public health centers handling related medical tourism. Manpower specialized for Korean integrated medical tourism is to be specially supplied for the Ministry of Culture, Health and Tourism, a policy control tower to develop and vitalize high value-added fusion (theme) tourism products such as the Korean integrated medical tourism, in order to discover, promote and support Korean integrated medical tourism’s differences from existing medical tourism. Conclusions: The differentiated integrated medical tourism that only Korea can offer in a variety of forms, in order to create a key area of high value-added medical tourism, should be strategically vitalized through a liaison between integrated medicine and tourism and the realization of patient-centered health care services with medical technology developed based on mutual understanding of Western and Oriental medicine.

항생제 사용관리 프로그램의 실행

권기태 대한의사협회 2022 대한의사협회지 Vol.65 No.8

Background: The antimicrobial stewardship program (ASP) is a coordinated intervention designed to improve and measure the appropriate antibiotics use by selecting an optimal antibiotic drug regimen, including dosing, therapy duration, and administration route. The implementation of ASPs decreases the consumption, cost, and adverse effects of antibiotic use. Additionally, it improves the clinical outcomes, and decreases Clostridium difficile infection and antimicrobial resistance. Current Concepts: To overcome the antimicrobial resistance and implement ASPs worldwide, various efforts are underway, such as enacting ASP guidelines, developing core elements for ASP implementation, introducing ASPs to the healthcare accreditation system, and providing healthcare facilities with adequate incentives to implement ASPs. In Korea, ASP guidelines were published in September 2021, and core elements for ASP implementation are being developed at the time of writing. However, there is a shortage of personnel required for the ASP team, including healthcare workforce and infectious disease specialists for leading the team Moreover, financial support for ASP implementation in the National Health Insurance Service is not provided yet. The awareness of hospital leadership and clinicians prescribing antibiotics for ASP implementation is still low. The reimbursement system establishment and workforce for ASPs are prerequisite for the implementation of ASPs. Discussion and Conclusion: At the national level, it is necessary to provide financial support for ASPs in healthcare facilities, nurture the healthcare workforce in performing ASPs, and advocate ASP education and publicity.

포스터 발표 : 간세포암의 국소 치료로서 고주파열치료의 임상 성적 및 재발 양상

권기태,박수영,김은수,박창근,조창민,탁원영,권영오,김성국,최용환 대한간학회 2003 Clinical and Molecular Hepatology(대한간학회지) Vol.9 No.3(S)

배경/목적: 간세포암은 전세계적으로 5번째로 가장 흔한 암으로서 국소적인 치료 방법의 하나로 고주파 열치료가 널리 이용되고 있다. 고주파 열치료는 간내 악성 종양에 대한 국소적이고 미세 침습적인 방법으로서, 수술이 불가능한 간세포암 환자에서 안전하고 효과적으로 치료할 수 있는 방법으로 이용되고 있다. 저자들은 간세포암으로 진단되어 초음파 유도하 고주파 열치료를 시행한 환자들에서 재발률 및 재발 양상에 대해 알아보고자 하였다. 대상과 방법: 1999년 10월부터 2002년 10월까지 간세포암으로 진단되어 고주파 열치료를 시행한 환자를 대상으로 하였다. 최근 6개월 이내 다른 치료를 받았거나, 적어도 6개월 미만의 추적 검사가 시행된 환자와 시술 후 3개월 추적 검사에서 재발이 있어 다른 치료를 받은 환자는 제외하였다. 시술 후 3개월 간격으로 역동성 복부 전산화 단층 촬영과 혈액 검사를 시행하여 재발 여부를 판정하였다. 재발 양상은 과거 고주파 치료 부위에 인접해서 재발한 경우는 치료 병변의 재발로 보았으며, 치료 부위 이외의 분절에 발생한 경우는 새로운 종양의 재발, 간 내에 3개 이상의 새로운 종양이 발생한 경우를 다발성 재발, 간 이외로 전이된 것을 원격 전이로 정의하였다. 결과: 1) 대상 환자는 119예(남자 86예, 여자 33예)였으며, 간세포암의 원인으로는 B형 간염 바이러스 86예, C형 간염 바이러스 15예, 알코올이 원인인 경우가 10예, B형 및 C 형 간염 바이러스 합병된 경우가 1예, 기타 7예였다. 2) 추적 기간은 평균 18.0±8.0개월(범위: 6-40)이였으며, 42예(35.3%)에서 재발 소견을 보였다. 3) 재발의 양상으로는 치료 부위의 재발이 11예(9.2%), 새로운 병변이 발생한 경우가 24예(20.2%), 다발성 재발이 7예(5.9%)였다. 3) 추적 기간내 재발의 빈도는 6개월 이내가 9예(21.4%), 12개월 이내가 18예(42.9%), 24개월 이내가 9예(21.4%), 24개월 이후가 6예(14.3%)였다. 결론: 간세포암의 고주파 열치료 시 재발 양상과 재발에 영향을 미치는 인자들은 명확히 인식하고 보다 조기에 적절히 시술을 한다면 간세포암에 대한 치료 효과를 향상 시킬 수 있을 것으로 생각된다.

이임사 (대한토질공학회지 제3권 제2호 : 1987년 6월)

권기태 한국지반공학회 1987 지반 : 한국지반공학회지 Vol.3 No.2

Full Cementation in Revision Total Knee Arthroplasty Using a Constrained Condylar Knee Prosthesis with an Average 7-Year Follow-up

권기태,한규영,이운상,김도훈 대한슬관절학회 2017 대한슬관절학회지 Vol.29 No.4

Purpose: To evaluate clinical and radiological outcome of the full cementation technique in revision total knee arthroplasty (TKA) using a constrained condylar knee (CCK) prosthesis. Materials and Methods: Between January 2008 and March 2012, 18 cases (16 patients) of fully cemented revision TKA were performed using a CCK prosthesis. Fifteen cases of aseptic loosening (13 patients) and 3 cases of infection were included. There were 2 males and 14 females with a mean age of 76.7 years at the time of surgery, and the average follow-up was 81 months. Clinically, the pain score, function score and Hospital for Special Surgery (HSS) score were evaluated. Radiologically, loosening, radiolucent lines and migration of implant were evaluated. Results: Preoperatively, the pain score, function score and HSS score were 50.3, 24.4 and 61.8 points, respectively. At the latest follow-up, the scores were improved to 84.8, 63.6 and 85.6 points, respectively (p<0.05). Loosening or migration of implant was not observed in any cases. Radiolucent lines were observed in 5 cases underneath the tibial component without progression during the follow-up. Conclusions: The full cementation technique in revision TKA using a CCK showed excellent clinical results. Although radiolucent lines were observed in 27.8% underneath the tibial component, there was no progression to loosening or instability.

빅 데이터 소프트웨어 비용산정을 위한 FP 응용

권기태 한국소프트웨어감정평가학회 2014 한국소프트웨어감정평가학회 논문지 Vol.10 No.2

Era of large volumes of data that data increases exponentially has arrived. This is because the holdings of smart devices per use and one of the social services has increased. Regardless of the development costs and the importance of scale calculation of precise software in the early stages of development in big data project management, cost estimation study reflects the big data environment was not nearly done. In this study, for an attempt to overcome these limitations, we have proposed a FP method of applying fuzzy logic. The proposed method in this paper is to reflect the actual size of the components of the FP, it is possible to correct cost estimation. Only the level FP value associated with an increase(decrease) in the boundary value increases(decreases), it is possible to minimize the ambiguity even ripple effect FP during the early stages of development. Fuzzy FP method proposed in this study, it is possible to calculate the appropriate cost for large-scale software in big data environment.

소프트웨어 아키텍처 기술 언어의 요구 조건에 관한 연구

권기태,변분희 국립7개대학공동논문집간행위원회 2002 공업기술연구 Vol.2 No.-

As the size and complexity of software systems increase, the design and specification of overall system structures become more significant issues than the choice of algorithms and data structures. Structural issues include the organization of a system as a composition of components; global control structures; protocols for communication, synchronization, and data access etc. In this paper we show why the existing software architectural description method is not satisfied, and suggest the necessity of the new architectural description language and the requirements of the software architectural description language.

대구지역 대기중 PM10 에 함유된 PAH 농도

권기태,최진수,백성옥 대한환경공학회 1995 대한환경공학회 학술발표논문집 Vol.1995 No.12