• 한국식품영양과학회지
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• 제44권5호
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• pp.761-766
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• 2015

아밀로그램 특성은 대조군과 비교하여 단백질가수분해효소의 첨가량이 증가할수록 최고점도는 유의적으로 증가하였으며, 냉각 후 점도 역시 $850.2{\pm}10.03{\sim}830.4{\pm}8.88B.U.$로 첨가량이 증가할수록 유의적으로 감소하였다. 비중과 pH 및 굽기 손실률은 대조군과 비교하여 유의적 차이는 없었으나 높이는 대조군이 $4.24{\pm}0.18cm$, 단백질가수분해효소 첨가구가 $4.84{\pm}0.09{\sim}5.06{\pm}0.11cm$ 정도로 대조군과 비교하여 유의적으로 증가하였다. 비용적은 대조군 $3.53{\pm}0.06cc/g$과 비교하여 $3.66{\pm}0.13{\sim}4.21{\pm}0.02cc/g$으로 유의적으로 높게 나타났으며, 이러한 현상은 계란단백질의 폴리펩타이드 사슬을 가수분해하여 반죽이 연화되고 윤활성이 증가하여 최종제품의 부피, 기공, 색상 및 품질이 향상되었다는 연구 결과(16)와 유사하였으며 crust의 적색도는 대조군과 비교하여 유의적으로 증가하였다. 경도는 대조군의 0일차가 $323.96{\pm}30.84$였고, 실험군은 $324.36{\pm}28.53{\sim}280.08{\pm}26.66$으로 감소하였으나 유의적 차이는 없었다. 2일차의 경도는 PC-2가 $420.64{\pm}43.46$, PC-3이 $393.79{\pm}34.64$, PC-4가 $373.35{\pm}30.82$로 대조군의 $456.01{\pm}37.64$보다 유의적으로 감소하였다(P<0.05). 관능검사는 껍질색과 내부 색상이 대조군과 비교하여 유의적 차이는 없었으나 맛, 향, 조직감, 촉촉한 정도, 식감에서는 유의적으로 높은 점수를 얻었다(P<0.05). 이상의 결과로 스펀지케이크에 단백질가수분해효소를 첨가하면 부피, 높이, 비용적에 영향을 주어 부피가 증가하고 품질 개선에 효과적인 것을 확인하였다.

• Journal of Animal Science and Technology
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• 제52권3호
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• pp.167-174
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• 2010

The objectives of this study were to quantify the combination values of the principal components and factors calculated using body measurements of Hanwoo (Korean Cattle) and estimate their heritabilities. The technique of multivariate analysis was used to reduce a large number of variables to a smaller number of new variables and characterize cattle according to body shape. The analyses were performed using 1,979 cattle at 12 months of age and 936 cattle at 24 months of age. The data for the analyses was obtained from progeny tests performed on Korean Cattle for 6 years from 2003 to 2008. The phenotypic correlations among these traits were estimated to range from 0.32 to 0.90 at 12 months of age and from 0.21 to 0.82 at 24 months of age. The first principal components (PC1s) indicated a weighed average of overall body measurements, accounting for 99.91% of the total variation for both periods of test. The two first PCs had positive coefficients for all body measurements. The major sources of PC, such as chest girth (CG), body length (BL), rump height (RH), and wither height (WH) were similar for both test periods. The heritabilities for PC1, the first factor score (FS1), and the second factor score (FS2) were estimated by multivariate REML method. The estimated heritabilities for PC1, FS1, and FS2 were 0.33, 0.38, and 0.40, respectively, at 12 months of age and 0.26, 0.76, and 0.58 at 24 months of age. Further studies are needed to determine whether the heritabilities of FS1 and FS2 at 24 months of age were overestimated.

• 한국콘텐츠학회논문지
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• 제12권4호
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• pp.1-9
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• 2012

본 연구의 목적은 이러닝 콘텐츠를 PC 기반 및 모바일 기반의 두가지 플랫폼에서 효율적으로 제작할 수 있는 방법론을 제시하는 것이다. 현재 기존 PC 기반의 이러닝 콘텐츠 제작에 많이 사용되는 플래시 기술이 iOS 등의 일부 모바일 플랫폼에서는 플래시가 지원되지 않는 호환성 문제가 발생하고 있으며, 플래시가 지원되는 모바일 플랫폼의 경우도 PC용 콘텐츠를 그대로 이용할 경우 작은 화면과 입력 인터페이스의 차이로 학습에 불편이 뒤따르는 현상이 발생하고 있다. 이러한 상황을 고려하여 본 연구에서는 HTML5 등의 표준 기술을 기반으로 두 가지 플랫폼에서 모두 서비스 가능한 콘텐츠 개발 방법론을 제시하고 있다. 결론적으로 본 연구에서 제안하는 방법론은 학습 콘텐츠 내용과 뷰를 분리하고, 구축된 콘텐츠 데이터베이스를 기반으로 다양한 형태의 뷰를 이용한 콘텐츠 구현이 가능하도록 지원하여 콘텐츠 재사용 및 다중 플랫폼 지원 부문에서 매우 효율적인 특성을 나타내도록 한다.

• 한국재료학회지
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• 제30권12호
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• pp.650-654
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• 2020

A combination of Polycarbonate (PC) material and Polymethylmethacrylate (PMMA), fabricated using an injection molding machine, has been investigated to determine its advantages, as studied in Ref. 1). This paper aims to investigate the optimization of PMMA/PC blend for both tensile yield strength and impact strength. Furthermore, interaction effects of process conditions on mechanical properties including tensile yield strength and impact strength of PMMA/PC blend by injection molding process are interpreted in this study. Tensile and impact specimens are designed following ASTM, type V, and are fabricated by injection molding process. The processing conditions such as melt temperature, mold temperature, packing pressure, and cooling time are applied; each factor has three levels. As a result, in comparison with optimization of separated responses, mechanical properties of PMMA/PC are found to decrease when optimizing both tensile and impact strengths simultaneously. The melt temperature is found to be the most significant interaction parameter with the mold temperature and packing pressure. In addition, there is more interaction between the mold temperature and cooling time. This investigation provides a useful understanding of the control of injection molding processing of polymer blends in optical application.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2002년도 Current Trends in Toxicological Sciences
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• pp.110-110
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• 2002

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.269.1-269.1
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• 2002

MPP$\^$＋/ is known to be a neurotoxic substance that induces the degeneration of dopaminergic neurons and Parkinson-like syndrome. Incubation with MPP$\^$＋/ induced the expression of heme oxygenase-l (HO-1) in PC-12 cells and HO-1 revealed a protective effect against MPP$\^$＋/ -induced cytotoxicity. In this study. we tested the effect of pre-conditioning on the MPP$\^$＋/-induced cytotoxicity. The PC-12 cells were incubated with MPP$\^$＋/ for 3 hrs. and then after 12 hrs the cells were exposed to several concentration of MPP$\^$＋/. (omitted)

• 한국정보과학회논문지:시스템및이론
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• 제31권12호
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• pp.716-725
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• 2004

고성능 PC 클러스터 시스템을 구축하기 위해서는 네트워크 접근 시간을 최소화하는 것이 중요하다. SCI 기반 PC 클러스터 시스템에서는 각 노드에 네트워크 캐쉬를 유지함으로써 네트워크 접근 시간을 줄이는 것이 가능하다. 본 논문에서는 공유 메모리를 PCI 버스상에 위치시킴으로써 네트워크 캐쉬지원을 가능하게 하였으며, 이에 기반한 Network Cache Coherenet NUMA(NCC-NUMA) 시스템을 제안하고, 핵심 모듈인 NCC-NUMA 카드를 개발하였다. NCC-NUMA 카드는 각 노드의 PCI 슬롯(slot)에 plug-in되는 형태이며, 공유메모리, 네트워크 캐쉬, 공유메모리 제어 모듈 및 네트워크 제어 모듈을 포함한다. 공유메모리와 네트워크 캐쉬 사이의 일관성은 IEEE SCI 표준에 의해 유지된다. NCC-NUMA 시스템의 성능 측정을 위해 SPLASH-2 벤치마크를 수행하였으며, NCC-NUMA 시스템이 네트워크 캐쉬를 활용하지 않는 NUMA 기반 클러스터 시스템에 비해서 최대 56%의 성능향상을 보임을 알 수 있었다.

• 한국간호교육학회지
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• 제6권1호
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• pp.7-22
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• 2000

The purpose of this study was to identified the level of the exposure to the PC Pornography and what's their post-exposure reactions to the PC pornography. The subjects were 423 middle school boys in Pusan. The survey was executed from July 12 through October 30, 1999. The collected data were analyzed by SPSS WIN using the %, mean, ANOVA. The results of this study were as follows: 1. 79.4%(336 boys) were exposed to the PC pornography. 46.3%(196 boys) answered that they experienced the published pornography prior to the PC pornography. 2. 78.5%(333 boys) answered that they had their PC in their homes. This ratio revealed the higher level of possession. 67.6% said that their PC were set in their own rooms. 57.9% of the subject answered they experienced the Internet Communications. 68.6% of the subject said that they tried PC communications once or twice in a week. 38.5% of the subject expressed that they used their own PC for 1-2 hours in a day. Most of them(82.7%) enjoyed the PC games or entertainment programs. 81.3% of the subject answered that their school performance didn't show the progress after the use of their own PC. 78.3% of the subject answered that they acquired information. 45.2% of the subject answered that they made their friend through the Internet communications. 78.7% of the subject answered that the time of family dialogue decreased. 70.7% of the subject answered that the time of their TV watching decreased. 3. As for their post-exposure reactions the subject who were exposed to the PC Pornography showed the point 2.93 in the item 'pleasure'. The point of 'sexual impulses' was 2.81. But the point of 'anxiety' was 2.75, the point of 'dislike or disgust' was 2.62, the point of 'guilty' was 2.59. 4. According to the frequency, the motivation and the companionship on the exposure to PC Pornography, their post-exposure reaction scores showed differences significantly. Finally, the post-exposure reaction had relation to the frequency, the motivation, the companionship and the place (F=3.28 ~ 8.40, p=.012 ~ .000).

• Child Health Nursing Research
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• 제7권1호
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• pp.62-73
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• 2001

The purpose of the study is to identify the differences about knowledge and attitude between the subjects exposed to pc pornography and the control group not exposed to pc pornography. The study was executed from July 12 through July 16. The subjects were 423 middle school boys. The comparison points were their ethical sexual knowledges and sexual attitudes. The collected data was analysed by SPSS WIN(including multiplicand, percentage, χ²-test, revised Fisher and t-test). The results of their study were as follows ; 1. The pc-related characteristics of the subjects. The subjects exposed pc pornography showed 51.8％ rate of exposure to printed pornography. The control group showed the rate of 26.4％. The former group owned their pc(81.5％), however, the latter group showed 66.7％. The former group set their pc sets in their study rooms(66.1％) however, the latter group installed those in their study rooms(73.6％). The former group experienced internet pc communications(62.5％),however, the latter group showed 40.2％. The former group made use of their pc sets in recreation(entertainment) programs(77.0％), however, the latter group showed the rate of 67.8％. The former group showed that their school performance levelled up after their pc manipulation(80.0％), however, the latter group showed the rate of 86.2％. The former group replied that their pc manipulation contributed to their friendship(50.3％), however, the latter group showed the higher rate of 74.7％. The both groups replied that their family dialogs and contacts rather reduced (78.9％ and 78.2％ respectively). The both groups revealed that they reduced the TV watching the rate 76.5％ and 48.3％ respectively. The differences between two groups were surveyed in the level of 95％ significance and the items such as 'contacts to printed pornography, pc possession or none, pc use rate, friendship occasions and the reduced time of TV watching' showed the significant differences. 2. The differences of two groups' sexual knowledges. As to the sexual knowledges, the both groups showed 41.1 and 34.1 points against 100 points respectively. The statistical differences were significant(t=2.72, p=.007). The 5 items among 17 showed the significant differences between two groups. 'The concept of masturbation' was χ²=5.033, p=.025. 'The prejudice to masturbation' showed χ²=9.902, p=.002 'The difference between female and male as to sexual excitement' showed χ²=7.985, p=.005. 'The positiveness of masturbation' showed χ²=10.205, p=.001. 'The differences between two sexes as to sexual impulse and sexual desire' showed χ²=8.463, p=.004. In conclusion, The former group showed the higher knowledges than the latter group. 3. The differences of two groups' sexual attitudes. The 4 items such as 'the curiosity to the other sex'(t=2.22, p=.027), 'the attention to pornography'(t=3.39, p=.001), 'the permission to pre-marriage intercourse'(t=2.15, p=.032) and 'the preference to the female body exposure'(t=2.67, p=.008) showed the differences between two groups as to sexual attitudes.

• 보건의료산업학회지
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• 제9권1호
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• pp.133-144
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• 2015

The Purpose of this study was to identify the educational effects of cardiopulmonary resuscitation using a PC skill-reporting system on the knowledge, Self-efficacy and skill performance ability of nursing students. The Participants were 57 nursing students from G metropolitan city, an experimental group of 29 subjects, and a control group of 28 students who were randomly sampled. Data were collected from 3 to 12 July of, 2013, and theory education and skill exposure programs for the experimental and control groups were conducted for 60 min. three times a week. The, PC skill-reporting system was used only with the experimental group. The collected data were analyzed with SPSS/WIN version 20.0 using ${\chi}^2$-tests, Fisher's exact probability tests, paired t-tests and t-tests. In the comparison of the two groups, the knowledge(t=-2.39, p=.022), self-efficacy (t=-3.45, p<.001) and skill performance ability(t=-2.52, p=.012) of the experiment group were significantly higher than those of the control group. Therefore, the adoption of instructional methods using a PC skill-reporting system is required to maximize the effects of cardiopulmonary resuscitation instruction.