• 한국멀티미디어학회논문지
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• 제12권1호
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• pp.147-155
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• 2009

교합력 측정과 분석은 힘의 관계를 분석하여 치아의 역학적 관계를 진단하는 방법이다. 본 연구에서는 새로운 교합력 측정 및 분석 시스템 개발의 기초 연구로써 측정 소프트웨어를 설계 및 구현하고 유용성을 평가한다. 이를 위해 교합력의 정상, 비정상을 효과적으로 측정할 수 있는 다양한 도구들을 개발하였다. 첫째, 치아에 작용하는 힘의 중심 변화를 나타내는 표지의 경로와 14개로 나뉜 치아 영역별 교합력 분포를 정량적인 수치와 함께 가시화 하였으며, 둘째, 교합력이 어느 치아의 특정한 영역으로 치우쳐서 작용하는가를 판단할 수 있도록 하기 위해 좌 우 치아 영역의 힘의 균형을 비율로 측정할 수 있는 도구를 구현하였다. 또한 0.5초 단위로 측정된 교합력의 변화를 소프트웨어 상에서 기록할 수 있도록 하였다. 센서 시트 방식의 측정 하드웨어와 연동하여 테스트한 결과, 힘의 분포와 균형을 효과적으로 확인할 수 있었다.

• 대한공간정보학회지
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• 제7권2호
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• pp.143-153
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• 1999

지형공간정보체계는 사용이 용이하여 널리 대중화되어가고 있다. 최근 수치사진측량은 GIS데이터베이스를 구축하거나 갱신하기 위한 경제적인 방법으로 인정받아 가고 있다. 지형공간정보의 획득을 위한 근거리사진측량은 좌표해석을 위해 이용되고 있는 번들조정이 요구된다 번들조정은 외부표정요소를 결정하기 위해서 초기 근사 값과 기준점들을 필요로 한다. 본 연구에서는 번들조정을 수행하기 전에 초기근사값을 추정하기 위한 종래의 방법들을 비교분석하고, 이들 외부표정요소의 결정을 위한 새로운 알고리즘을 개발하여 비용을 절감할 수 있는 방안을 제시하고자 하였다. 우선 효과적이고 경제적이며 보다 정확한 사진측량 관측값처리 기법을 제공하고자, 기존의 DLT 알고리즘에 관측값에서의 모든 종류의 과대오차들을 자동적으로 검출하고 제거하기 위한 robust 방법과 해를 위해 필요한 기준점의 수를 줄이기 위해 GPS를 도입하였다. 또한 본 논문에서는 단사진으로 처리하는 새로운 후방교회법(space resection)유도하였다. 제안한 방법의 주된 장점은 외부표정요소의 초기근사값을 요구하지 않고 계산과정에서 반복계산을 요구하지 않는다는 점이다.

• 한국해양공학회지
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• 제11권4호
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• pp.61-75
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• 1997

The social demand urges us to use some equipments and structures in high temperature environment. By this occasion, the necessity of studying the fatigue crack growth is an important aspect of new materials. However, the present situation is rarely to accumulate the fatigue data. Especially, 1Cr-1Mo-0.25V steel and 304 stainless steel have been increased to be used under the severe condition of high temperature. And so, the fatigue estimation of those materials is important and appropriate. Fatigue tests have been carried out to examine the crack initiation, growth behaviour for the small fatigue crack of 1Cr-1Mo-0.25V steel and 304 stainless steel at room temperature and 538^{\circ}C$. The remote measurement system which has many merits of checking and saving the image for detailed examination was applied to closely detect the crack length. Generally, the fatigue crack initiated in the form of multiple cracks and grew each other. And then it coalesced to become a major crack. The major crack governed the rest of the fatigue life. In the growing process, each peripheral cracks interact and grow for a certain period. After then, it coalesced and fractured. On the basis of the above experimental data for the small crack, a simulation program was developed to predict the residual life time and to estimate the integrity of machine elements and structures. At the same time, the simulation was extended to 1Cr-1Mo-0.25V steel. The simulation results have shown a good agreement to those of the experimental ones for both materials of 1Cr-1Mo-0.25V steel and 304 stainless steel with small cracks. The NASCRAC has applied to compare the fatigue life with the experimental results. And so, it can be said that the simulation program is valuable tools to the industrial fields.

• Journal of Microbiology and Biotechnology
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• 제27권11호
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• pp.2037-2043
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• 2017

The surface protein hemagglutinin (HA) mediates the attachment of influenza virus to host cells containing sialic acid and thus facilitates viral infection. Therefore, HA is considered as a good target for the development of diagnostic tools for influenza virus. Previously, we reported the isolation of single-stranded aptamers that can distinguish influenza subtype H1 from H5. In this study, we describe a method for the selective electrical detection of H1 using the isolated aptamer as a molecular probe. After immobilization of the aptamer on Si wafer, enzyme-linked immunosorbent assay (ELISA) and field emission scanning electron microscopy (FE-SEM) showed that the immobilized aptamer bound specifically to the H1 subtype but not to the H5 subtype. Assessment by cyclic voltammetry (CV) also demonstrated that the immobilized aptamer on the indium thin oxide-coated surface was specifically bound to the H1 subtype only, which was consistent with the ELISA and FE-SEM results. Further measurement of CV using various amounts of H1 subtype provided the detection limit of the immobilized aptamer, which showed that a nanomolar scale of target protein was sufficient to produce the signal. These results indicated that the selected aptamer can be an effective probe for distinguishing the subtypes of influenza viruses by monitoring current changes.

• Child Health Nursing Research
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• 제8권3호
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• pp.322-333
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• 2002

Purpose: The purpose of study was : 1) to analyse the trend of research on the sensory stimulation in newborn in Korea, 2) to suggest direction for further study on the sensory stimulation in newborn and contributing to the use of intervention in newborn. Method: Research studies on the sensory stimulation in newborn were selected from the dissertations, parents-child health. Academic Society Journal, and from Korean Journal of Pediatrcs which were conducted between 1984 and 2002. The total numbers of the studies were 15. These studies were analyzed for 1) time of publication or presentation 2) thesis for a degree or nondegree 3) characteristics of subjects 4) sample size 5) research design 6) type of sensory stimualtion 7) meaurement tool 8) result. Result : 1)The most year of studies were the 1996's～ 2000's. 2) The degree of studies were higher than nondegree. 3) The most characteristics of subjects were the premature infants. 4) The most frequent sample sizes were 11-20. 5) The all research design was nonequivalent control group pretest-posttest design in quasi experimental basis. 6) The most type of sensory stimulation was Field massage(tactile and kinesthetic). 7) The measurement tool used all objective tools. 8) The most research data were collected by the measure of the weight, heart rate, behavior state, respiration, stress hormon and positive results. Conclusion: 1) Human sensory stimulation did not seem to harm the infants. 2) several positive effects of sensory stimulation that have been reported previously must be reevaluated. 3) further research will be required large sample size, long-term outcome, individualized stimulation program, early parent-infant contact in order to enhance the development of attachment, to determine the underlying mechanism and theorical frame for these stimulation effect.

• 복식문화연구
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• 제19권1호
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• pp.1-18
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• 2011

The purpose of this study is to prepare the base for the development of the high value clothing products with eco-friendly fabric which become the conversation topic recently. In order to collect data, a questionnaire was used. The subject of survey was the adult women in from their 20's to 50's. The survey areas were Gyungnam, Busan, Ulsan, and Daegu in Korea. The questions were formed with the results of a preliminary investigation and the contents selectively revised the measurement tools used to the previous studies. To analyze the collected data, $x^2$2-test, t-test, ANOVA were carried out with SPSS. In the result of difference analysis of the actual purchase conditions according to demographic variables, the purchase motives, the purchase items, and the purchase information showed the significant difference according to the demographic variables except monthly income, and the purchase place showed the significant difference to all the demographic variables. The results of difference analysis of post-purchase satisfaction according to the demographic variables and the purchase items were as follows, The post-purchase satisfaction in price showed the significant difference according to age and monthly income. The one in design showed the significant difference according to educational level and occupation. The one in fashion showed the significant difference according to marriage or non-marriage, age, educational level and occupation. The one in the wearing sensation showed the significant difference according to marriage or nonmarriage, age, educational level, occupation. The one in transformation showed the significant difference according to educational level, monthly income, purchase item. The one in laundry and management convenience showed the significant difference according to monthly income and purchase item. Finally, the one in pollution level showed the significant difference according to age, monthly income, occupation, and purchase item.

• 한국융합학회논문지
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• 제11권5호
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• pp.381-389
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• 2020

환자 특히 노인환자들은 자신의 특성과 속도에 적합한 간호를 필요로 하는 데 비해, 우리나라 현실에서는 '빠른 간호'가 강조되는 실정이다. 이에 본 연구는 한국에서의 '느린 간호'의 속성을 파악하고자 한다. Walker & Avant의 방법을 사용하여 문헌고찰을 통해 '느린 간호'에 대한 개념분석을 실시하였다. 2000~2019년 Pubmed, Riss, NDSL, DBPIA, Google scholar에서 '느린', '느림', '느린 간호', '느린 처방'을 핵심단어로 하여 문헌을 찾고 개념분석을 실시한 결과, '느린 간호'의 속성으로 '대상자의 속도 존중', '주의 깊음', '과정 중 안위', '참여', 그리고 '삶의 의미 숙고'가 나타났다. 이러한 '느린 간호'의 속성을 중심으로 모델사례를 도출하였다. '느린 간호'의 선행 요인은 환자의 기능 저하, 심리적 처짐, 무관심, 치료에 대한 두려움, 삶의 의지 부족으로 나타났으며, 느린 간호로 인해 나타나는 결과로는 잠재 능력 발견, 자신감 회복, 건강증진, 의료진과의 의사소통 향상, 신뢰감 및 자아통합감이 도출되었다. 향후 '느린 간호'의 속성을 이용한 측정도구를 개발하여 대상자 간호와 연구에 이바지하기를 기대한다.

• 한국항해항만학회지
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• 제31권1호
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• pp.35-42
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• 2007

최근 인공위성 SAR를 이용한 기술은 해풍, 파랑, 해류 등과 같은 해양에서 발생되는 다양한 현상을 관측하고 연구하는데 필수적인 기술로 대두되고 있다. CMOD4, CMOD-IFR2 모델은 해상풍의 크기를 구할 수 있으며, wave-SAR 변환 기법과 inter-look cross-spectra 기법은 파랑의 크기, 방향과 같은 물리적 값을 추출할 수 있다. 또한 Doppler shift 기법을 적용하여 해류속도를 구할 수 있다. 본 연구에서는 위의 기법들을 종합적으로 적용하여 SOP(SAR Ocean Processor) 프로세서를 개발하였다. 이 프로세서를 한반도 연안 지역에 적용하여 RADARSAT-1 영상자료로부터 해풍, 파랑, 해류의 물리적 정보를 추출하였으며, 이를 현장 관련 자료와 비교하여 신뢰할만한 결과를 얻을 수 있었다.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2000년도 제26회 펄프종이기술 국제세미나
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• pp.1-10
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• 2000

The development of paper machines, increasing machine speeds with new, mostly low basis weight and/or high ash content paper grades, as well as the fact that several trends regarding process items have increased the sensitivity of papermaking. At the same time, papermakers are looking for flexibility in the production line. We can say that with all PMs the biggest benefits with the lowest capital spending can be achieved by focusing on improved wet end management. In order to manage wet end chemistry on a paper machine, our goal is to control sub-process through which we can influence the operation of the entire wet end with maximum effect. Key measurements and controls are-white water consistency control which is the most effective way to control retention - charge demand measurement and control which takes care of concentration of the anionic material entering to PM -ash measurements and controls which are deeply related to retention and paper quality This paper presents and concentrates to two of these key controls ; retention and charge. The purpose of charge control is to give the process control the tools to react to changes caused by amount of dissolved and colloida material incoming to wet end system. It is called coagulation or fixing control. Retention control is then taking care of retention aid flow to the process by responding any changes seen in white water consistency. It is called flocculation control. Each of these solutions separately , and even more effectively all together, stabilize the wet end operations and so greatly improve the produced paper quality and machine runnability. Practical results will be presented and they are referring to the latest mill cases. We have developed the first wet end measuring system in the late 1980s and control solutions based on this modern measuring technology were completely updated in 1990s. This paper introduces the principle, operation , and results of our unique wet end analyzers (retention and charge ) which are at the level of automation solutions as a part of paper machine quality control Especially our newest member of the platform , on-line charge analyzer has reached and set new standards to the on-line charge monitoring.

• 펄프종이기술
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• 제32권5호
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• pp.44-53
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• 2000

The development of paper machines, increasing machine speeds with new, mostly low basis weight and/or high ash content paper grades, as well as the fact that several trends regarding process items have increased the sensitivity of papermaking. At the same time, papermakers are looking for flexibility in the production line. We can say that with all PMs, the biggest benefits with the lowest capital spending can be achieved by focusing on improved wet end management. In order to manage wet end chemistry on a paper machine, our goal is to control subprocesses through which we can influence the operation of the entire wet end with maximum effect. Key measurements and controls are - white water consistency control which is the most effective way to control retention. - charge demand measurement and control which takes care of concentration of the anionic material entering to PM. - ash measurements and controls which are deeply related to retention and paper quality. This paper presents and concentrates to two of these key controls: retention and charge. The purpose of charge control is to give the process control the tools to react to changes caused by amount of dissolved and colloidal material incoming to wet end system. It is called coagulation or fixing control. Retention control is then taking care of retention aid flow to the process by responding any changes seen in white water consistency. It is called flocculation control. Each of these solutions separately, and even more effectively all together, stabilize the wet end operations and so greatly improve the produced paper quality and machine runnability. Practical results will be presented and they are referring to the latest mill cases. We have developed the first wet end measuring system in the late 1980s and control solutions based on this modern measuring technology were completely updated in 1990s. This paper introduces the principle, operation, and results of our unique wet end analyzers (retention and charge) which are at the level of automation solutions as a part of paper machine quality control. Especially our newest member of the platform, on-line charge analyzer has reached and set new standards to the on-line charge monitoring.