• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.4
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• pp.201-209
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• 2020

In this study, issues related to changes in base year, which have controversial effects on fees in service contracts, were reviewed. In this regard, sensitivity analysis was conducted on the effects of changes in base year on conversion factor by type. The benefits and disadvantages of each specific type of medical institution were examined. Main conclusions are as follows. First, changing the base year to be closer to the present time had a beneficial effect on the conversion factor of hospitals. Second, changing the base year to be closer to the current point of time had an adverse effect on the conversion factor of pharmacies and clinics and had a significant adverse effect on clinics. Third, assuming that a single conversion factor is collectively applied to all types, a favorable effect occurred in all cases when the base year was changed to be closer to the present time. Base year changes can bring about conflicts of interest between insurer and providers, and within providers. Therefore, changing the base year should be pursued upon mutual agreement on a reasonable basis for resource allocation. In addition, it is necessary to provide incentives for temporary compensation for the types of losses incurred.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.11
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• pp.1693-1699
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• 2015

Overall quality of six kinds of commercial broiler breast fillets (A~F) retailed in Korea were examined, including proximate composition analysis, shape profile analysis, pH, color, tenderness, cooking loss, descriptive analysis, and consumer testing. A total of 120 breast meat fillets were purchased at a local market. Overall quality of broiler breast meat commercially available in Korea was found to vary significantly, indicating a broad range of product quality in the marketplace. Moisture content of meat ranged from 74.4 to 76.4%, whereas protein, fat, and ash contents were 21.8~25.2, 0.2~0.8, and 1.07~1.16%, respectively. The pH ranged from 6.2 to 6.4, whereas color values ($L^*$, $a^*$, and $b^*$) were 52.2~57.2, -3.5~0.5, and 8.3~13.6, respectively, among all products tested. Approximately 9% variation in cooking loss was detected depending on the products evaluated, whereas shapes (height, width, and length) of meat were also significantly different (15% variation on average). Product F was proven to be the least tender and least liked by consumers, implying that tenderness is a key attribute determining consumer acceptability of broiler breast meat.

• Korean journal of food and cookery science
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• v.16 no.4
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• pp.367-371
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• 2000

In order to study the tenderizing effect of proteolytic enzymes in fruits, beef(M. semimembranosus) was marinated with meat sauce containing each fruit juices. After cooking, the shear force was measured by Rheometer and evaluated the sensory properties of beef by quantitative descriptive analysis method. The results are as follows: 1. The combination ratio of meat sauce:water was 2:1 with pH 5.0∼5.5 showed the max. tenderness. 2. As a result of shear force test, the decrease of shear force was pineapple>papaya>fig>kiwifruit>pear: especially, pineapple, papaya and fig tendered the beef significantly comparing with pear and kiwifruit at p<0.001. 3. The tendering effect of pineapple and papaya on the meat showed significant difference (p<0.01) comparing with pear in tenderness and overall acceptability by sensory evaluation; and there was a significant difference between pear and papaya in taste (p<0.05). 4. There was highly significant correlation between mechanical tenderness and sensory properties: correlation of fruit and mechanical tenderness was -.877(p<0.01); between mechanical tenderness and overall acceptability, r = .532(p<0.01); between fruit and sensory tenderness, r = .495(p<0.01); between mechanical tenderness and sensory tenderness, r = .490(p<0.01). At p<0.05, between taste and juiciness, r = .208.

• Journal of the Korean Magnetics Society
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• v.21 no.2
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• pp.77-82
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• 2011

The use of soft magnetic materials have been increasing in the various industrial fields according to the increasing demand for high performance, automatic, miniaturing equipments in the recent our life. In this study, we investigated the effect of factors on the core loss and magnetic properties of electrical steel and soft magnetic composites. Furthermore, we reviewed the major efforts to reduce the core loss and improve the soft magnetic properties in the two main soft magnetic materials. Domain purification which results from reduced density of defects in cleaner electrical steels is combined with large grains to reduce hysteresis loss. The reduced thickness and the high electrical conductivity reduce the eddy current component of loss. Furthermore, the coating applied to the surface of electrical steel and texture control lead to improve high permeability and low core loss. There is an increasing interest in soft magnetic composite materials because of the demand for miniaturization of cores for power electronic applications. The SMC materials have a broad range of potential applications due to the possibility of true 3-D electromagnetic design and higher frequency operation. Grain size, sintering temperature, and the degree of porosity need to be carefully controlled in order to optimize structure-sensitive properties such as maximum permeability and low coercive force. The insulating coating on the powder particles in SMCs eliminates particle-to-particle eddy current paths hence minimizing eddy current losses, but it reduces the permeability and to a small extent the saturation magnetization. The combination of new chemical composition with optimum powder manufacturing processes will be able to result in improving the magnetic properties in soft magnetic composite materials, too.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.479-485
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• 2002

본 연구는 초음파를 이용하여 한우도체의 연도를 비파괴적이며 객관적으로 측정할 수 있는 시스템을 개발하기 위해서 수행되었다. 한우도체 연도 측정 시스템은 크게 초음파 측정장치, 자동 탐촉자 수직이동장치, 데이터 획득 및 분석장치로 구성되었는데 초음파 측정장치는 초음파 pulser/receiver 및 탐촉자, 자동 탐촉자 이동장치는 상하운동부, 구동부, 제어부, 데이터 획득 및 분석장치는 digitizer, Labview 5.1을 사용하여 구성되었다. 통합된 시스템을 이용하여 획득된 도체의 초음파 신호를 분석하기 위해 1.0~1.1 MHz의 bandpass filtering을 거쳐 hilbert 변환을 이용, envelope를 구할 수 있었으며 탐촉자와 도체의 최적 접촉 위치를 결정하기 위하여 3단계로 나누어 신호분석을 실시하였다. 시료의 개수는 40개였으며 획득된 envelope를 FFT 변환 후 PLS, PCR 분석을 수행한 결과 7단계의 PCR 분석에서 $R^2$= 0.6474의 유의성 있는 결과를 나타내었으므로 최적 접촉 위치로 결정하였다. 최적 접촉 위치를 통해 시료 80개의 추가 실험을 실시한 결과 PCR 분석에서 $R^2$= 0.4304의 결과를 나타내었으며 이를 이용, 도체의 연도를 측정하는 프로그램을 개발하고 최종 통합 시스템을 구축하였다. 본 한우도체 연도 측정 시스템의 개발을 통해 한우도체의 전단력을 예측하여 연도를 객관적으로 판정 가능할 것으로 생각되며 또한 사이즈의 확대로 도축장에 설치하는 설비로서 가능할 것이라 사료된다. 그러나 추후 좀 더 세밀한 측정과 결과의 보완을 위한 분석방법의 개선에 관한 연구가 진행되어야 할 것이다. 사용해 설계된 장치를 사용자가 쉽게 제작할 수 있도록 하였다. 공정설계프로그램을 통해 설계된 공정은 데이터베이스에 저장이 되며 장치설계프로그램에서 쉽게 이전에 설계했던 공정을 이용할 수 있도록 하여 공정 설계와 장치설계를 연계하도록 하였다.동투하시간과 비용 -종자준비부터 통마늘선별까지의 일관기계화로 투입된 주요작업의 노력은 75∼76%가 절감되고, 재배규모 3ha기준시 비용은 44-53%절감되었음. the annealing texture. Observations by TEM and EBSD revealed the formation of very fine grains of ∼1.0$\mu\textrm{m}$ after CCSS.he dislocations form local defect arrangements at the grooves permitting the substantial reduction in defect density over the remainder of the interfacial area.한 최대의 감자 재배지역을 형성하였다. 제주도는 산지지형과 따뜻한 기온으로 2기작이 가능하고, 감자가공 공장설립과 교통발달에 따른 육지 시장과의 접근이 용이해졌기 때문에 남한에서 2번째로 큰 감자재배지역이 되었다.(요약 및 결론에서 발췌)그람양성균에서 효과적이었으며, 농도별 항균력시험 결과 농도가 증가할수록 비례하여 저해율도 증가함을 알 수 있었다. 첨가농도를 달리하여 미생물의 생육도를 측정한 결과, fraction II磎꼭\ulcorner경우 그람양성균에 대해 500 ppm 이상에서 뚜렷한 증식억제효과를 나타내었다.서 뚜렷한 증식억제효과를 나타내었다.min/+}$계

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.2B
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• pp.137-147
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• 2010

In this study, Chukwooki and modern data were compared using annual maximum rainfall event series. Annual maximum series for specified rainfall duration in modern frequency analysis can not be constructed from Chukwooki data, so the concept of independent rainfall event is introduced to compare Chukwooki and modern data. Annual maximum rainfall event is determined by applying the bivariate exponential distribution and the parameters estimated annually are selected. The results using the annual parameter show that the hydrological meaning of the parameters is related to the variation of annual total rainfall amounts. For the whole independent rainfall events, the total rainfall and the rainfall intensity of Chukwooki data are greater than those of modern data, and rainfall duration of the two periods is similar. However modern annual maximum rainfall events show different characteristics that rainfall duration is much longer, rainfall intensity is similar and the total rainfall is greater than those of Chukwooki period. The increasing trend of rainfall duration and total rainfall of the modern annual rainfall events may be regarded as the one of components of the long-term cycle.

• Journal of the Korea institute for structural maintenance and inspection
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• v.27 no.2
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• pp.8-16
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• 2023

This study evaluated a shear capacity of confined socket-bolt (CSB) shear connector developed for utilizing cast in placed pile (CIP) as a permanent underground wall. The push-out tests were performed in the specimens with different CIP types, CSB shear connector types, L/d, and concrete compressive strengths of concrete pile, and with or without waterproofing at interfaces between CIP and underground wall. Test results showed that the specimens with a H-shaped pile were fractured in the CSB shear connector, while the fracture concentrated in the concrete part of the specimens with a reinforced concrete pile was alleviated as the compressive strength of the concrete pile increased, resulting in the severe fracture of CSB shear connector. The maximum shear capacities of the specimens with high strength bolts and reinforcing bars used as CSB shear connector were approximately 1.22 and 1.20 times higher than those of the specimens with a H-shaped pile, respectively, and 1.10 and 1.16 times higher than those of the specimens with a reinforced concrete pile, respectively. Meanwhile, the maximum shear capacity was not significantly affected by the embedding length of the CSB shear connector and overlapping length of reinforcing bar. The predicted shear capacities calculated from the KDS standards were lower than the measured values of all specimens tested in this study.

• 한국벤처창업학회:학술대회논문집
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• 2006.04a
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• pp.107-137
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• 2006

우리나라에서의 기존 산학연 협력에 관한 연구는 주로 대학의 역할을 강조하였다. 그러나 출연(연)이 지난 $30^{\sim}40$년간 연구개발 수행과정에서 축적된 혁신역량을 국가차원에서 효율적으로 활용할 필요가 있다. 특히 최근 들어 중소기업의 기술경쟁력 강화에 대한 관심이 증대되고 있는 시점에서 정부출연기관에 의한 중소기업 지원의 타당성과 필요성에 대하여 실증적으로 도출한 연구가 부족한 것이 사실이다. 이 연구는 기존의 추상적인 정책제안을 탈피하여 1,077개의 중소기업과 13개 정부연구기관의 373명의 연구원들을 대상으로 한 광범위한 설문조사를 분석하여 중소기업이 실질적으로 요구하는 기술의 유형과 지원의 형식 및 정부연구기관의 연구원들이 체감하는 기술공급의 문제점들을 중심으로 고찰하고자 한다. 설문조사결과 정부연구기관이 지역을 기반으로 한 중소기업과 대학 등 국가기술혁신체제 속의 연구개발주체들을 네트워크화 하여 기술지식과 정보의 유통, 활용을 촉진하는 매개체로서의 역할을 수행하여 지역혁신 지원 조직이 공동으로 지역 중소기업을 위한 산 학 연 종합기술지원 사업을 추진할 것을 요구함을 발견하였다.

• Journal of the Korean Society for Railway
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• v.10 no.6
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• pp.655-659
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• 2007

The purpose of this paper is to analyze cost-effectiveness of a train simulator. The cost-effectiveness of training program is assessed by multiplying transfer effectiveness ratio (TER) by training cost ratio (TCR). If their product is less than one, the program is not cost effective. Even if a program is not cost effective, however, safety considerations may be important to consider. Findings indicated that each type of train simulators might be used with each type of training programs appropriately for improving cost-effectiveness of a train simulator.

• The korean journal of orthodontics
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• v.25 no.5 s.52
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• pp.627-634
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• 1995

The purpose of this study to analyze characteristics of soft tissue profile in Korean young adults. The sample consisted of 50 young adults (25 males and B females) who had pleasing and normal occlusion. Soft tissue analysis (facial convexity angle, nasolabial angle, H-angle, Z-angle, E-line to upper lip, lower lip, Sn-pog' to upper lip, lower lip) was performed on lateral cephlograms. Mem and standard deviation was obtained. When compared by other studies, mean profile of this sample was relatively straighter and both the upper and lower lips was more protrusive.