• 한국초전도ㆍ저온공학회논문지
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• 제10권2호
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• pp.27-29
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• 2008

Superconducting RF cavities are being considered for accelerating a proton beam at 700 MHz in the linac of the Proton Engineering Frontier Project (PEFP) and its post-project. Dumbbell fabrication is a mid-process for manufacturing an elliptical superconducting RF cavity. During the dumbbell fabrication, control of the dumbbell length and the $TM010\;{\pi}$ mode frequencies is necessary to build up a desired cavity. A new formula with a perturbation measurement method is used to measure and calculate the frequencies of the individual half-cells of a PEFP low-beta dumbbell, and to tune the frequency and length of the half-cells. In this article, the tuning method and results of the PEFP low-beta dumbbells have been presented.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.595-596
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• 2015

Growing demand for traditional Korean housing, modernized Korean traditional housing (Hanok) was developed as a way of providing Hanok for the public. However, the standard cost data for Hanok has limitations, as it was developed based on single mock-up project actually constructed and verified by another mock-up Hanok. In order to meet these research objectives, daily report composition which is easy-to-use for on-site workers and managers and also easy-to-accumulate standard cost data was developed first. Secondly, access to the system was made easy through a web server. Finally, an automated calculation formula was inserted to allow the last inputted data to be automatically included for adjustment of standard costs. This system was designed from an industry perspective so that any unspecified and nonprofessional users can easily use. For the users, it has an advantage that on-site workers are provided with a daily report system through web server and also they are able to complete such reports through simple input and output without any additional forms.

• 보건행정학회지
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• 제9권1호
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• pp.72-109
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• 1999

This study is conducted to investigate the current status on the utilization of health care and plan for solving this problem. The claims data of the fiscal tear 1995 obtained from the regional health insurance society are used for the study. The main findings of the study are summarized as follows. Indexes(The Extremal Quotient(EQ), coefficients of variance(CV's))which represent the regional difference in the admission rate of the tertiary medical diagnosis group report that there is difference in quantity and quality of utilization of health care. The admission rate is lower in the big city areas, Kyoungkido, Kangwondo and Chunlapukdo. Even after age-sex adjustment, the admission rate is still low in Kangwondo, Chunlapukdo and Kyoungsangpukdo. The big city areas tend to have higher rates in the expenses per claim, hospital days per claim, and daily expenses but the rates are still low in some area in Kangwondo, Chunlanamdo and Kyoungsangpukdo. This result remains as same after age-sex adjustment. There is a large regional difference in average utilization rate for the tertiary hospital of the tertiary medical diagnosis group: 57.2%(SD 11.53). The utilization rates for the tertiary hospital in their large catchment area are 96.34%, 83.19% and 73.22% in each Kyoungin, Kyoungnam and Kyoungpuk areas whereas it is lower in a Chungpuk and Chungnam areas. The regional differences of health care utilization of the tertiary medical diagnosis group gave some relationships with their geographical characteristics such as socio-economic characteristics and supply factors of medical services. It is important that many medical policies should be developed in order to minimize and balance out the regional differences of health care utilization. The service allocation policy should include the reconstruction of manpower policy, developing the resource allocating formula, finding the self-sufficient catchment area and reforcing of public health services. Moreover, in order to achieve the balanced development by region, they should investigate and consider each county's microscopic properties under the consistent macrocopic policy. The further studies to find causes of regional difference are needed.

• 한국비블리아학회지
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• 제22권4호
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• pp.361-379
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• 2011

이 연구는 국내 인용 데이터베이스에서 저널 페이지랭크를 올바르게 측정할 수 있는 방안을 모색하고자 하였다. 국내 인용 데이터베이스는 해외 인용 데이터베이스에 비해서 인용 링크가 외부로 향하는 비율과 자기 인용 비율이 높다는 특성이 있다. 페이지랭크 공식은 반복 계산을 통해서 수렴하는 알고리즘이기 때문에 이런 특성을 감안하지 않으면 신뢰할만한 저널 페이지랭크 측정이 이루어질 수 없다. 따라서 국내 인용 데이터베이스에 적합한 저널 페이지랭크 측정 방안을 살펴보고 KSCD를 대상으로 측정한 결과를 분석하였다. 산출된 페이지랭크 지수에 대해서 상관분석과 회귀분석으로 검증해본 결과 SCImago 저널 랭크 공식을 적용하고 cr2 방식으로 저널 자기 인용을 조정하는 것이 국내 인용 색인 데이터베이스에서 저널 영향력을 평가하기에 적합한 방안인 것으로 확인되었다.

• 철학연구
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• 제130권
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• pp.109-134
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• 2014

아드와이따 베단따(이하, '베단따'로 줄여 부름)에서 인간은 윤회와 고통이라는 비관적인 출발점을 가지지만 자기 자신을 초극함으로써 완전자가 되는 것을 목표로 삼는다. '해탈'이라고 불리는 이 인간의 목표는 그것을 이루기 위한 여러 수단들과 함께 베단따에서 유일하게 가치 있는 것으로 받아들여진다. 이에 따라 자신의 본질인 아뜨만을 인식하는 해탈의 과정에는 자기의 가치에 대한 자기 인식이 포함될 수밖에 없다. 아뜨만은 '존재, 의식, 환희'(있음, 비춤, 좋음)라고 정의되는데, 아뜨만이 존재론적, 인식론적, 가치론적으로 최종적인 토대이자 원천이라는 점을 밝히고자 하는 데 그 목적이 있다. 그러나 인간의 목표와 관련된 베단따의 입장은 고정된 인간의 본성, 추상화되고 관념화된 세계의 우위, 내부 세계에 대한 관심의 과잉 등과 같은 여러 한계점을 보이기도 한다. 결국 인간의 목표에서 긍정적으로 평가할 수 있는 것은 자기 탐구의 과정이 주는 가치이다. 자기 탐구란 가장 현실적인 결과를 낳는 베단따의 각본을 주어진 것으로 받아들이고 나서 자기 자신이 지속적으로 그 각본을 자기 경험에서 실행하고 검증하는 과정이다. 이 과정에서, 세속적 삶을 버리고 탈속적 삶으로 행위의 중심을 이동하는 것이 '자기 조정'이고, 참된 자아에 대한 지식을 통해 자아의 과잉을 덜어내는 것이 '자아의 단순화'이며, 그 단순화의 끝에 최종적 자아 자체로 머무는 것이 해탈이다. 따라서 인간의 목표를 향한 베단따의 탐구는 '참된 행위=자기 조정 ${\rightarrow}$ 참된 지식=자아의 단순화 ${\rightarrow}$ 해탈=최종적 자아'라는 틀로 정리될 수 있다.

• 한국도로학회논문집
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• 제14권4호
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• pp.51-61
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• 2012

PURPOSES : This study deals with the working life of polymer concrete, which is typically used as a repair or overlay material for portland cement concrete pavements. METHODS : In the scope of this study, laboratory testing was conducted on fresh MMA modified UP polymer concrete, which uses an MMA monomer for viscosity adjustment and strength improvement of UP resin. The experimental variables were temperature (-20 to $+20^{\circ}C$) and binder components (MMA, MEKPO, and DMA). RESULTS : The result showed that the optimum binder ratios for polymer concrete production were 12, 11, and 10 wt.% when the MMA contents were 20, 30, and 40 wt.%, respectively. The working life of polymer concrete depending on temperature and binder components could be expressed by a logarithmic functional formula. The coefficient of variation for each binder component was the highest for DMA content while the lowest for MEKPO content. Also, the contents of each binder component for ensuring the working life of 60 minutes were proposed. CONCLUSIONS : Ultimately, the present study derived a linear regression equation estimating 60 minutes working life based on the setting times of each binder component.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1999년도 제14차 학술회의논문집
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• pp.288-291
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• 1999

The PID (Proportional-Integral-Derivative) controller is widely used in the industries for more than fifty years with the well known Ziegler-Nichols tuning method and others varieties. However, most of the PID controller being used in the real practice still require trial and error adjustment for each process after the tuning method is done, which is consuming of time and needs the operator experiences to obtain the best results for the controller parameter. In order to reduce the inconvenience in the controller tuning, this paper presents a design of an automatic PID controller parameter analyzer being used as a support instrument in the industrial process control. This analyzer is designed based on the tuning formula of Dahlin to synthesize the PID controller parameter. Using this analyzer, the time to be spent in the trial and error procedures and its complexity can be neglected. Experimental results using PID controller parameter synthesized from this analyzer to the liquid level control plant model and the fluid flow control plant model show that the responses of the controlled systems can be efficiently controlled without any difficulty in mathemathical computation.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집A
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• pp.860-865
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• 2000

This Paper Proposes the test pieces of X, Y and Z axes to compensate the shape distortion of Selective Laser Sintering(SLS) parts resulting from the phase change during the sintering process. In no case of the proposed compensation test pieces of X, Y axes the accurate rates of shrinkage can be measured with the reduction of curling which is obtained from adjustment of build orientation and the formula used to get scale factors are proposed with the shrinkage rates of them. The scale factors of X, Y and Z axes are generated by building up proposed compensation test pieces. The generated scale iactors are required to satisfy the dimensional accuracy even if there are changes of the build position and the size of SLS parts in the build chamber. For this reason, it is proposed that the build positions and the size be considered to be noise factors against the compensation test pieces and a method is also proposed that scale factors be selected to robustly maintain the dimensional accuracy of SLS parts under the actual operating conditions with the application of the Taguchi Method.

• KDI Journal of Economic Policy
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• 제36권3호
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• pp.95-120
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• 2014

본 논문은 경제주체들이 미래에 대한 기대를 형성하는 데 있어서 기대기간이 주요한 역할을 한다는 점을 밝히는 시도이다. 정보효율성과 관련된 경제학적 가정이 확률과정에 어떠한 제약으로 작용하는지에 대한 분석으로부터 출발하여, 기대변수에 대한 조정과정이 오로지 새로이 발생한 정보만을 반영하는 경우를 미래기대의 임의보정(random revision of expectation)이라는 새로운 개념으로 제시하였다. 이러한 가정하에 물가동학 결정식을 도출할 경우, 산출갭으로 측정한 수요압력의 인플레이션에 대한 영향은 기대기간에 따라 달리 식별되었다. 이러한 모형을 우리나라 자료를 이용하여 실증한 결과, 기대기간을 단기로 설정할 경우 계수 추정치는 작아지고 통계적 유의성도 떨어지는 것으로 나타났다.

• International Journal of Internet, Broadcasting and Communication
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• 제13권2호
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• pp.67-75
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• 2021

As pass the three revised bills, the Personal Information Protection Act was revised to have a larger application for personal information. For an industrial development through an efficient and secure usage of personal information, there is a need to revise the existing anonymity processing method. This paper modifies the Zero Knowledge Proofs algorithm among the anonymity processing methods to modify the anonymity process calculations by taking into account the reliability of the used service company. More detail, the formula of ZKP (Zero Knowledge Proof) used by ZK-SNAKE is used to modify the personal information for pseudonymization processing. The core function of the proposed algorithm is the addition of user variables and adjustment of the difficulty level according to the reliability of the data user organization and the scope of use. Through Setup_p, the additional variable γ can be selectively applied according to the reliability of the user institution, and the degree of agreement of Witness is adjusted according to the reliability of the institution entered through Prove_p. The difficulty of the verification process is adjusted by considering the reliability of the institution entered through Verify_p. SimProve, a simulator, also refers to the scope of use and the reliability of the input authority. With this suggestion, it is possible to increase reliability and security of anonymity processing and distribution of personal information.