• Journal of Practical Engineering Education
• /
• v.14 no.2
• /
• pp.327-332
• /
• 2022

This experiment presents a precise analysis method using a mass spectrometer in the biopharmaceutical market, where utility is expanding. Among various techniques for analyzing the protein drug, somatotropin, the peptide fragments through biochemical sample preparation was analyzed by LC-MS/MS characterization. The analysis process was performed by separation analysis using nanoUPLC and MS/MS analysis using Orbitrap. In the case of somatotropin with 21 tryptic peptides, 13 of them were consistent with theoretical predictions within an average of 1 ppm error.

• Advances in pediatric surgery
• /
• v.5 no.1
• /
• pp.75-81
• /
• 1999

A survey on the intestinal atresias was made among 34 members of Korean Association of Pediatric Surgeons. The response rate was 82.4 %. Two hundred and fifteen patients from the January 1, 1994 to December 31, 1996 were analyzed. The lesions were 73 cases of duodenum(DA), 72 cases of jejunum(JA), 71 cases ileum(IA) and 2 cases cecum and sigmoid colon respectively. There were 2 cases of combined anomalies (DA + JA + IA and DA + JA). Male to female ratio was 1:1 in DA, and 1.8:1 in JA. Seventy four cases(34.3 %) were premature babies(DA 35.2 %, JA:48.6 %, IA:19.2 %), and 62 cases(28.7 %) had low birth weight (DA:39.4 %, JA 33.0 %, IA:13.7 %). Antenatal diagnosis was made in 92 cases(43.6 %). However 22 cases (23.9 %) of them were transferred to pediatric surgeon after delivery. Maternal polyhydramnios was observed in 63 cases(28.9 %). Seventy· five cases(34.4 %) were taken only simple abdominal film for diagnostic studies. The associated malformations were observed in 54 aresia and were observed more frequently in DA(35 cases, 47.9 %). Meconium peritonitis due to intrauterine bowel perforation was more frequently associated with IA compared to DA and JA. The overall mortality rate was 30 %. (Abbreuations: $P_{T}$;p-value in total, $P_{DJ,DI,JI}$;p value between two groups among duodenal, jejunal and ileal groups).

• Journal of Korean Library and Information Science Society
• /
• v.36 no.4
• /
• pp.349-364
• /
• 2005

The main Points of the 7th Education Program are: taking a serious view of development of children's individuality and creativity, and encouragement students their accord activity with applying digital reference for teaching and learning. It Is the suggestion of revitalization method of digital material room, afterward. by means of analyzation for satisfaction and demand and using status of children's library digital material room along with emphasis of self-loading learning and boosting self-solving ability based on computer and IT paradigm. The purpose is : providing foundation of active Information service and suggestion of revitalization method by means of analyzing operation and effective using children's library digital material room at Nowon Children's Library opened 2nd February, 2003. In 2nd chapter; thesis of conceptive model of children's library digital material room. In 3rd Chapter: Present status analysis of N. W. Children's library digital material room operation, and analysis of using and demand of public school 100 pupils. In 4th Chapter : Suggesting conclusion of revitalization of children's library digital material room based on utilization and demand appeared through this study.

• Journal of Teachers' Pension
• /
• v.5
• /
• pp.219-241
• /
• 2020

연기연금제도는 연금 지급개시연령 도달 이후 일정 기간 연금수급을 포기하는 대신 급여에 일정액을 가산하여 지급하는 제도이다. 연기연금은 지급개시연령 도달 이전에 수급을 신청하면 일정액을 가산하여 차감하고 지급하는 조기연금과 상호보완적인 기능을 수행하며 유연은퇴(flexible retirement)의 주요한 축을 구성한다. 연기연금제도의 정책적 목적은 수급자별 다양한 재무적 상황에 따라 보다 유연한 은퇴설계와 노후소득 확충을 지원하는 제도적 장치를 마련하는 것이다. 하지만 현재 연기연금제도는 국민연금에는 시행되고 있으나 사학연금을 비롯한 직역연금에는 도입되지 않고 있다. 최근 공적연금간 급여규정 수렴화에도 불구하고 사학연금을 비롯한 직역연금에서 연기연금을 도입하지 않는 배경에는 공적연금간 급여 형평성 등 많은 쟁점사항들이 영향을 미치기 때문일 것이다. 하지만 이 연구는 그러한 기저의 논쟁에서 벗어나 제도의 재무적 특성 분석을 목적으로 한다. 분석자료는 연금수급을 위한 요건을 충족한 퇴직자 중 연금수급연령 미도달자로 이들 대기자 그룹의 미시자료를 이용해 연기연금 적용 시 제도의 총급여액 증가를 야기하지 않는 재정 중립적 증액률(plan-neutral deferral rate)을 산출하였다. 분석결과, 분석자료를 대상으로 한 산술적 증액률은 6.75%였으나 민감도 분석의 결과를 반영한 적정수준은 6% 이하일 것으로 사료된다. 이는 장기적 추정의 특성상 적용되는 가정변수 수준에 따라 변동폭이 클 뿐만 아니라 하위 구성집단간의 이질적 특성으로 산출되는 증액률의 편차가 크기 때문이다. 따라서 재정 안정성을 훼손하지 않기 위해서는 보수적 관점의 접근이 필수적이다. 연구의 구성은 크게 세 부분으로 II장에서는 소득활동관련 연금의 주요한 수단으로 연기연금의 제도적 필요성을 검토하고, III장에서는 실제 사학연금 가입자 자료를 이용해 재정 중립적 증액률을 산출하고 주요 변수별, 특성 집단별 증액률에 대한 분석결과 및 시사점을 기술하였다. IV장에서는 장기 재정안정성을 저해하지 않기 위해 적정 증액률 산정 시 추가적으로 고려해야 되는 재무적 관련사항을 기술하였다.

• Journal of Digital Convergence
• /
• v.17 no.1
• /
• pp.389-401
• /
• 2019

The purpose of this study is to clarify the relationship between servicescape experience of visitors to professional baseball stadium, control perception on the spot, consumption emotion, and revisit intention. A total of 273 questionnaires were analyzed using SPSS 20.0 and AMOS 20.0. The validity of the data was verified through frequency analysis, reliability analysis, confirmatory factor analysis, and correlation analysis. The hypothesis was verified by structural equation model analysis. First, servicescape has a statistically significant effect on control perception. Second, the control perception in the servicescape has a significant effect on the consumption emotion. Third, servicescape effected consumption emotion. Fourth, consumption emotion had a significant influence on the revisit intention. The results of this study suggest that visitors to baseball stadiums can induce revisit intention through positive experience of servicescape. The specific discussions and implications are described in the text.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2022.05a
• /
• pp.440-440
• /
• 2022

1970년대부터 집중 건설 된 우리나라의 다목적댐, 홍수조절댐, 용수전용댐 등의 대형 국가 수자원시설물들의 '고령화'가 급속히 진행되어 수리구조물에 대한 안정성을 주기적으로 파악할 수 있는 정밀안전모니터링 체계 구축이 시급한 시점이다. 주기적인 정밀안전모니터링 방법들 중에는 위성 등을 활용한 원격관측 기술들이 최근 시도되고 있다. 위성 영상레이더(SAR; Synthetic Aperture Radar)는 마이크로파 대역의 전자기파를 송·수신하는 능동센서로 날씨 및 주·야간에 영향을 받지 않고 지표면 관측이 가능한 장점이 있다. 특히, 고정산란체 영상레이더 간섭(PSInSAR; Permanent Scatterer Interferometry SAR)기법은 영상레이더 영상에서 긴밀도(coherence)가 상대적으로 높은 수자원시설물과 같은 고정산란체의 위상(phase) 정보를 이용하여 mm급의 측정민감도로 시계열 변위 분석이 가능하다. 또한, 여러 장의 InSAR 영상을 생성하였기 때문에 DEM 오차, 위성궤도 오차, 대기 성분에 의한 지연 오차 등을 보다 정밀하게 제거할 수 있는 장점이 있다 본 연구에서는 국내 중대형 수자원시설물의 정밀안전모니터링을 위하여 고정산란체 영상레이더 간섭 기법을 영암금호방조제, 영주댐, 소양강댐 등에 적용하여 시계열 변위 분석을 수행하였다. 2014년 11월부터 2022년 3월(현재)까지 획득된 Sentinel-1 SLC(Single Look Complex) 위성자료의 상승(Ascending) 궤도 126장 및 하강(Descending)궤도 187장을 각각 활용하였다. 두 위성궤도를 모두 활용하여 수직, 수평 변위 등 3차원 분석을 수행하였으며, 특히 소양강댐 GPS 관측 자료와 정확도 검증에서 연평균 2mm의 RMSE를 보였다. 이를 통해 위성 원격탐사 기술로도 댐, 보, 방조제와 같은 수자원시설물에 대한 시계열 변위 분석을 통한 댐 안전관리가 가능함을 보여주고 있다. 2025년 발사될 국내 C-밴드 SAR 탑재 수자원위성 개발을 통해 한반도 재방문주기를 단축시킴으로써, 한반도 전역의 수자원시설물 정밀안전진단체계 구축이 가능할 것으로 기대된다.

• Journal of the Korean Geosynthetics Society
• /
• v.12 no.4
• /
• pp.1-10
• /
• 2013

Recently, the closed landfills are usually converted into parks or playground by the check the stability of landfill because they settle unevenly making them unsuitable for structures. When the closed landfill reuse, environmental and structural stability is important. To increase the bearing capacity and reduce the probable settlement of a foundation on waste disposal ground, a layer of geosynthetics(Geocell) is placed on the waste disposal ground. In this paper, the analysis of long-term settlement parameter correlation was performed, also the evaluation of bearing capacity reinforcement effect was conducted by field test. The settlement measured in the field, and input the same ground index when an integer to identify each model were compared by calculating the settlement. In addition, by adjusting the parameters of each model to identify the most similar to the value of field measurement parameters were calculated. Based on the analysis results, when the using the Park's model C(intermediate) = 0.0678, the expected settlement is similar to the field measurement results. Also, the bearing capacity of geocell reinforced ground is 1.193~1.554 times higher than that of unreinforced ground.

• 한국체육학회지인문사회과학편
• /
• v.51 no.3
• /
• pp.171-181
• /
• 2012

The purpose of this study was to analyze the influence of the marketing strategy at golf courses in Jeonnam area on perceived values and customers' behaviors. To make this goal, the study was selected it as the population to customers who were the member of 10 golf courses run by membership and public system. The study, then, selects 366 by convenience sampling. The study was analyzed the data by frequency analysis, reliability analysis, factor analysis, and simple and multiple regression analysis. The results are as follows. First, it has a meaningful influence on perceived value to the factors of product, price and place which are the component of marketing strategy in golf courses. Second, it has a meaningful influence on revisiting intention, one of the customers' behaviors, to the factors of product, price and promotion which are the component of marketing strategy in golf courses; but the factor of place has no influence on it. Third, the factors of product and price, the component of marketing strategy have a meaningful influence on the intention of recommending others which is one of customers' behaviors while the factors of promotion and place don't have. Finally, the factor of perceived value has a meaningful influence on both of the intention of revisit and recommendation to others which are customers' behaviors.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.28 no.12
• /
• pp.954-963
• /
• 2017

In this paper, we analyzed the electric/magnetic field distribution and SAR distribution in a human body due to the resonant-type wireless power transfer(WPT) system with an operating frequency of 6.78 MHz. To analyze the field distribution under the unperturbed condition, a prototype system was fabricated and the measured results were compared with the simulation results. For safety during measurement, the available power to the transmitter coil is limited to 1 W. To analyze the induced current density and SAR distribution, a simple human model consisting of three layers, skin, fat, and muscle, was used for the simulation. The electromagnetic wave exposure levels obtained through measurement and simulation were compared with the recommended levels by the ICNIRP.

• Journal of the Korean GEO-environmental Society
• /
• v.19 no.10
• /
• pp.27-34
• /
• 2018

The effect of cutting-off the leakage was identified by the cement based wall mass constructed in underground, as complete facilities for reinforcement in shear strength of landfill which was subjected to circular failure and for cutting-off the leachate from the costal waste landfill. By (1) visual inspection after underground excavating and (2) compressive strength test for core of underground wall, it could be identified that quality of wall mass constructed in underground was so effective, and by additional test, so as (3) in-situ permeability test in the hole after coring wall mass, (4) analyzing the characteristics of basic components and their profiles through the series of chemical experiments and (5) deciding the general distribution patterns from the chromatograms using GC-MS, it could be identified that watertight and cutting-off the leachate of wall mass constructed in underground was very effective. Therefore, it is concluded that five types of tests suggested in this study can judge the effect of cutting-off the leakage or infiltration of very high concentrated leachate from the waste landfill.