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        검색결과 2,261

        641.
        2018.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study was to compare physicochemical, microbial, and antioxidant properties of domestic and imported wheat kernels for bread making. Two domestic (JK1, 2) and three imported (ND, DNS, and CWRS) kernels were compared. Domestic kernels had higher moisture contents, and lower ash and protein contents (p<0.05). In grain characteristics, JK1 had 13.62% of damaged kernels, which was the highest among the samples (p<0.05). JK2 was similar to imported kernels in the ratio of sound kernels, foreign materials, and damaged kernels. Kernel size of JK1, 2 was larger than the imported kernels; therefore, kernels area and perimeter were higher by the image analyzer. Domestic kernels hid lower total aerobic counts the imported kernels (p<0.05). Domestic kernels and DNS had no yeast, while NS and CWRS had yeast in kernels. DNS (3.08 mg gallic acid equivalent (GAE)/g) had the highest total polyphenol content (TPC), followed by JK1 (2.81 mg GAE/g). JK2 had the lowest amount of TPC as 2.26 mg GAE/g. Total flavonoid content (TFC) was the highest in DNS as 0.44 mg catechin equivalent (CE)/g and JK2 was the lowest as 0.12 mg CE/g. Domestic wheat kernels had lower protein content and lightness than the imported wheat kernels so that flour from domestic wheat kernels may have lower quality for baking.
        4,000원
        642.
        2018.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Recently, interest in the development of alternative water resources has been increasing rapidly due to environmental pollution and depletion of water resources. In particular, seawater desalination has been attracting the most attention as alternative water resources. As seawater desalination consumes a large amount of energy due to high operating pressure, many researches have been conducted to improve energy efficiency such as energy recovery device (ERD). Consequently, this study aims to compare the energy efficiency of RO process according to ERD of isobaric type which is applied in scientific control pilot plant process of each 100 m3/day scale based on actual RO product water. As a result, it was confirmed that efficiency, mixing rate, and permeate conductivity were different depending on the size of the apparatus even though the same principle of the ERD was applied. It is believed that this is caused by the difference in cross-sectional area of the contacted portion for pressure transfer inside the ERD. Therefore, further study is needed to confirm the optimum conditions what is applicable to the actual process considering the correlation with other factors as well as the factors obtained from the previous experiments.
        4,000원
        644.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Elderly with dementia in geriatric hospitals (EDGH) are highly dependent on hospital meals. This study evaluated the foodservices satisfaction and food preference of the EDGH. The survey was conducted on 104 elderly with dementia (21 males and 83 females) in 4 geriatric hospitals in Seoul and Incheon in November, 2016. Data were collected from interviews using a questionnaire that consisted of 6 questions for foodservice satisfaction and 24 questions (10 categories) for food preference. The data were analyzed using SPSS ver. 20.0. The satisfaction with taste, saltiness, texture, and variety in foodservices was good, but the satisfaction with the amount was not, and the reason for leaving food was its large serving size. The subjects preferred soft boiled rice, noodles, porridges, meats, fish, seafood, vegetables, and fruits. Among them, they preferred more janchiguksu, red bean porridge, beef, croaker, oyster, spinach, and banana. Regarding the cooking methods, they preferred soup, grill, and boiling, but not frying. The also preferred Chinese cabbage kimchi, but they did not prefer hard kkakdugi. They did not prefer milk because of diarrhea, but they preferred yogurt. Therefore, to provide a satisfying meal for EDGH, it is necessary to develop a friendly diet considering their food preferences.
        4,800원
        645.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 논문에서는 2개 이상의 기하형상이 순응 또는 비순응 경계면에서 접합된 멀티패치 문제에 대한 아이소-지오메트릭 해석에 대해서 연구하였다. 패치 경계면에서 응력의 연속성을 표현하는 방법으로 Nitsche 방법론과 마스터-슬레이브 방법에 기반한 방법론에 대해서 지배방정식을 유도하고 아이소-지오메트릭 이산화를 수행하였다. 멀티패치 문제에 대해서 두 방법 론의 차이점을 간단하게 비교하였으며, 후처리 과정에서 사용되는 NURBS 곡면 기반의 응력 복원법에 대해서 기술하였다. 수치예제에서 비순응 경계면을 가지는 멀티패치 빔 문제를 통해 Nitshce 방법론을 검증하였으며, 응력집중을 가지는 문제에서 소개된 두 방법론이 유사한 결과를 보이는 것을 확인하였다. 소개된 NURBS 곡면 기반의 응력 복원법을 후처리에서 도입할 경우 멀티패치 문제의 경계면에서 개선된 연속적인 응력을 보임을 알 수 있다.
        4,000원
        646.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Nitrogen (N) loading from domestic, agricultural and industrial sources can lead to excessive growth of macrophytes or phytoplankton in aquatic environment. Many studies have used stable isotope ratios to identify anthropogenic nitrogen in aquatic systems as a useful method for studying nitrogen cycle. In this study to evaluate the precision and accuracy of denitrification bacteria method (Pseudomonas chlororaphis ssp. Aureofaciens (ATCC® 13985)), three reference (IAEA-NO-3 (Potassium nitrate KNO3), USGS34 (Potassium nitrate KNO3), USGS35 (Sodium nitrate KNO3)) were analyzed 5 times repeatedly. Measured the δ15N-NO3 and δ18O-NO3 values of IAEA-NO-3, USGS 34 and USGS35 were δ15N: 4.7±0.1‰ δ18O: 25.6±0.5‰, δ15N: -1.8±0.1‰ δ18O: -27.8±0.4‰, and δ15N: 2.7±0.2‰ δ18O: 57.5±0.7‰, respectively, which are within recommended values of analytical uncertainties. Also, we investigated isotope values of potential nitrogen source (soil, synthetic fertilizer and organic-animal manures) and temporal patterns of δ15N-NO3 and δ18O-NO3 values in river samples during from May to December. δ15N-NO3 and δ18O-NO3 values are enriched in December suggesting that organic-animal manures should be one of the main N sources in those areas. The current study clarifies the reliability of denitrification bacteria method and the usefulness of stable isotopic techniques to trace the anthropogenic nitrogen source in freshwater ecosystem.
        4,200원
        647.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The nitrogen isotope value in both ammonium and nitrate ion were determined at 9 stations during both June and August 2016, in order to understand the origin of DIN at the Han river. δ15N-NO3 and δ15N-NH4 values in 8 stations (CP, SB, MHC, P4, SJ, SBC, P2, SC) were no significant variation. However δ15N-NO3 and δ15N-NH4 values in KK (Kyeongan stream) showed significant different in comparison with 8 stations, with an apparent increase of nitrogen isotope values. These results indicate that antropogenic nitrogen source influence on KK station. Also the δ13C and δ15N isotope ratio of phytoplankton (Diatom and Cyanobacteria) in KK (Kyeongan stream) showed heavier values, compared to other study stations. These results indicate that nitrogen isotope value in phytoplankton effects by different nitrogen source in study sites. These results suggest that the analysis of stable isotope ratios is a simple but useful tool for the identification of dissolved inorganic nitrogen origin in aquatic environments.
        4,000원
        648.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The safety management of feeds has become a very important factor for food safety and legislation and system improvement are being implemented to prevent the hazardous factors from livestock products. The range of heavy metals in feed hazardous factors was similar among countries, but the As maximum limit was strengthened in Korea compared to China. Regulation of residual pesticide and radioactivity was only controlled in Korea. The range and maximum limit of mycotoxin were strictly controlled in China compared to Korea. In order to enhance the feed safety in Korea, it is necessary to improve the policy, strengthen the range of the feed hazard and the maximum limit and carry out the research related to the feed safety.
        4,000원
        649.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Most people seek a happy life and happiness positively affects sentiment, satisfaction with life, creativity, human relationship, business productivity, and even health and life extension. However, according to a survey in 2013, subjective happiness of adolescents (including university students) was very low compared to other age groups in Korea. Therefore this paper examined the effects of job-seeking stress, appearance recognition, financial situation, trust in government, and locus of control on university students' happiness using SEM (structural equation modeling). 207 university students in Seoul, Korea have been surveyed. At first, an initial experimental SEM model among these variables has been set up and reliability analysis has been conducted. Then multiple regression analyses on job-seeking stress and happiness as well as SEM analysis have been conducted. As a result of these analyses, the SEM model has been revised two times. The final SEM model passed the goodness-of-fit test (using RMR, GFI, NFI, CFI, and IFI indices). The final SEM model showed the followings. First, Higher job-seeking stress (especially sentimental part, rather than environment or action related parts) negatively affects happiness. Second, Trust in government also affects happiness both directly and indirectly. Third, Locus of control is affected both by trust in government and financial situation. Fourth, appearance recognition heavily affects job-seeking stress. In addition, appearance importance is higher than appearance interest, meaning that students who are not very interested in appearance usually recognize the importance of appearance. Finally, happiness is affected neither financial situation nor appearance recognition. Therefore, even either they are in a poor financial situation or not happy with their appearance, they can be happy if they have firm locus of control.
        4,300원
        650.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this experiment was to determine the effect of supplementation of hot melt extrusion (HME) processed Zn sulfate on growth performance, nutrients digestibility, small intestinal morphology and excretion of Zn in weanling pigs. A total of 200 piglets of mixed sex randomly allotted to four treatments on the basis of initial BW (7.15±0.81 kg). There were five replicates in each treatment with 10 pigs per replicate. The experimental treatments consisted of: 1) basal diet containing ZnSO4; 2) basal diet containing Zn-Methionine (ZnMet); 3) basal diet containing low level of nano-Zn as HME (ZnHME50); 4) basal diet containing medium level of nano-Zn as HME ZnSO4 (Zn-HME75). The average daily gain was improved by the ZnMet and ZnHME75 compared with the pigs fed ZnSO4 supplemented diets (p=0.009). Moreover, ZnHME75 and ZnMet affected on the ATTD of CP during phase 2 (p=0.014). The villus height (VH) was affected by increasing when pigs fed diets supplemented the ZnHME75 (P=0.044). The pigs fed diets supplemented ZnHME50 had significantly the lowest (p=0.037) Zn content in liver compared with other treatments. The Zn content in the feces was significantly higher (p<0.001) in ZnSO4 and ZnMet compared with ZnHME50 or ZnHME75. In conclusion, it could be concluded that dietary Zn can be reduced by 25% with ZnHME without any detrimental effect on performance of weanling pigs.
        4,200원
        651.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        DMSP OLS 영상은 도시의 가로등과 건물과 같은 인공조명시설로부터 방출되는 야간 빛 에너지 세기 정보를 제공하는 것으로 알려져 있다. 이 자료는 대상 지역의 시가화 건조지역의 면적과 공간 범위를 추정하는 연구에 활용되어왔다. 본 연구는 DMSP OLS 연간 영상자료를 활용하여 중국 랴오닝 성의 시가지의 시계열 변화, 도시개발의 특성, 그리고 도시개발의 방향성을 분석하였다. 본 연구의 결과에 따르면, 야간 인공위성 영상에서 도출된 랴오닝 성 시가지의 공간적 확산은 이성의 경제수준을 향상시키기 위한 경제발전 정책을 잘 반영하였다. 선양과 다롄 등 대도시는 지속적인 도시 성장을 경험하고 있으나, 대부분의 도시들은 최근에 이르러 도시개발이 이루어진 것을 알 수 있었다. 선양, 안산, 다롄 등 랴오닝 성의 대도시는 북동-남서 방향의 축 선상에 위치한다. 이러한 도시발달 축은 연도별 시가화 중심점의 공간 분포에서도 확인되었다. 이와 같은 결과에 따르면, DMSP OLS 영상자료는 도시화 관련 연구를 수행하기 위한 공간적 대안 자료로서 활용 가능성이 클 것으로 기대된다.
        4,300원
        652.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        느티나무, 팽나무, 은행나무 노거수를 대상으로 수간 내부 건강도 단층촬영을 통해 수목의 내부 피해 도를 조사하였다. 단층촬영 결과, 전반적으로 수간 내부의 건강부위 비율은 팽나무>느티나무>은행나무 의 순으로 나타났고, 부후부위는 은행나무>느티나무>팽나무의 순으로 나타났으며, 공동부위는 은행나 무>느티나무>팽나무의 순으로 나타났다. 은행나무의 경우 외관상으로는 공동부위가 나타나지 않았지만 내부적으로는 부후가 진행된 수목도 있었다. 공동부위의 증가로 수간 부러짐 등의 피해가 나타날 수 있 으므로 수간 내부 단층촬영을 통해 내부 부후 상황을 정밀하게 조사·분석함으로써 노거수의 생육상태 를 파악할 수 있으며, 내부단층촬영은 노거수 보호관리에도 응용될 수 있을 것이다.
        4,000원
        653.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        As an alternative to coupling beam in shear wall system, application of the damper which can dissipate energy is increasing. In this study, lintel beam type steel damper which is simple to construct and change depending on design load was proposed. Cyclic loading test was conducted to compare reinforced concrete coupling beam and lintel beam type steel damper. The test results showed that lintel beam type steel damper has higher initial stiffness and energy dissipation capacity than reinforced concrete coupling beam.
        4,000원
        654.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        For evaluating equations of bursting force in different codes, comparative study of the formulas was conducted. Because the equations does not consider variables such as shape of anchorages, angle of tendons, and eccentricity, a relation between the bursting forces and the variables has to be analyzed. In this paper, therefore, a comparative analysis of bursting forces computed by equations in the codes and finite element analysis was performed. As a result, it could be figured out that bursting force equations in the local zone were determined by coefficient k.
        4,000원
        655.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        ‘Consulting’, which is the main research topic of the knowledge service industry, is a field of study that is essential for the growth and development of companies and proliferation to specialized fields. However, it is difficult to grasp the current status of international research related to consulting, mainly on which topics are being studied, and what are the latest research topics. The purpose of this study is to analyze the research trends of academic research related to ‘consulting’ by applying quantitative analysis such as topic modeling and statistic analysis. In this study, we collected statistical data related to consulting in the Scopus DB of Elsevier, which is a representative academic database, and conducted a quantitative analysis on 15,888 documents. We scientifically analyzed the research trends related to consulting based on the bibliographic data of academic research published all over the world. Specifically, the trends of the number of articles published in the major countries including Korea, the author key word trend, and the research topic trend were compared by country and year. This study is significant in that it presents the result of quantitative analysis based on bibliographic data in the academic DB in order to scientifically analyze the trend of academic research related to consulting. Especially, it is meaningful that the traditional frequency-based quantitative bibliographic analysis method and the text mining (topic modeling) technique are used together and analyzed. The results of this study can be used as a tool to guide the direction of research in consulting field. It is expected that it will help to predict the promising field, changes and trends of consulting industry related research through the trend analysis.
        4,000원
        656.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        북한의 김일성 신화는 현대 사회에서도 신화가 여전히 생산되고 있으며, 강 력한 힘을 발휘하고 있음을 보여주는 중요한 사례이다. 북한이 건설되고 김일성 을 중심으로 권력 구조가 형성되는 과정에서 김일성 신화는 핵심적인 역할을 담당하였다. 갑작스러운 해방을 맞아 혼란스러운 상황에서 북한 주민들의 절망 과 이를 극복하고자 하는 열망, 그리고 초월적 영웅에 대한 갈망이 북한 정권의 정치적 기획과 만나 창조된 것이 김일성 신화이다. 김일성 신화는 건국 신화와 영웅 신화로서의 속성을 가지고 있다. 김일성 신화는 김일성을 ‘민족의 태양,’ ‘민족의 해방자’로 묘사함으로써 그를 건국의 시조로 위치시키고, ‘백두산’이 갖 는 상징성에 주목한다는 점에서 공간의 신성함을 토대로 하는 건국 신화적 속 성을 보여준다. 또한 김일성이 항일 무장 투쟁 과정에서 보여주었던 비범한 육 체적 능력을 강조하고, 그가 가진 정신적 강인함과 뛰어난 지적 능력을 신성화 하며, 토지 개혁을 단행하고 농업에서부터 수산업, 공업에 이르기까지 생산성 향상을 위해 그가 제안한 방안들을 높이 평가함으로써 김일성의 문화 영웅적 면모를 부각시킨다.
        6,300원
        659.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 유아교육기관 원장의 코칭 역량을 증진하기 위하여 개인변인과 사회적지지에 따라 차이가 있는지 알아보고자 하는 데 목적이 있다. 연구대상은 서울과 광주시의 유치원 원장과 어린이집 원장 265명이었으며, 연구도구로는 이재영(2012)의 회복탄력성 지수 검사 (Resilience Quotient Test: RQT)와 사회적지지 척도를 사용하였다. 본 연구를 통해 다음과 같 은 연구 결과가 나타났다. 첫째, 원장의 개인변인 중 학력, 월수입, 기관 규모에 따라 회복탄력성에 차이가 있었으며, 경력, 결혼유무에 따른 회복탄력성의 하위변인은 부분적으로 유의한 차이를 보였다. 기관유형에 따른 차이는 보이지 않았다. 둘째, 사회적 지지는 원장의 회복탄력 성 전체와 하위변인 모두와 정적 상관관계가 나타났다. 셋째, 원장이 인지한 사회적 지지 중 정서적 지지와 평가적 지지가 높을수록 그리고 정보적 지지가 낮을수록 회복탄력성 전체를 높이는데 영향을 주었다. 이러한 결과는 원장의 교사 및 부모 코칭 역량을 증진시키기 위한 회복탄력성을 강화하며, 나아가 코칭 리더십 교육 등의 기초자료로 사용될 수 있을 것이다.
        5,400원
        660.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        With the concerns of global climate change, the significant changes in rainfall patterns have aggravated the occurrence of pollutants from agricultural uplands. Heavy and intensive rainfalls have rinsed a variety of pollutants off the land, sending them into the neighboring water environments which further causes water pollution problems. Recently, the application of PAM(Polyacrylamide) in agricultural lands has gotten much attention for soil conditioning. Therefore, this study aimed to develop the automatic control system applying the chemical flocculant, liquid PAM in order to flocculate the suspended solids and deposit at the bottom of farmland water channel, so eventually minimize the amount of non-point pollutants discharged into receiving water. The optimum feed rate for liquid PAM was calculated through the experiment in artificial water channel and applied to the control system. As the results of the performance test of the automatic turbid water control system installed in the sloped field, the range of turbidity reduction rate was 25 to 33% with the average turbidity of 292 to 498 NTU in water channel.
        4,000원