• Asian-Australasian Journal of Animal Sciences
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• 제31권2호
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• pp.218-224
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• 2018

Objective: This study evaluated the effects of different levels of protein concentrate supplementation on the growth performance of yak calves, and correlated the growth rate to changes occurring in the plasma- amino acids, -insulin profile, and signaling activity of mammalian target of rapamycin (mTOR) cascade to characterize the mechanism through which the protein synthesis can be improved in early weaned yaks. Methods: For this study, 48 early (3 months old) weaned yak calves were selected, and assigned into four dietary treatments according to randomized complete block design. The four blocks were balanced for body weight and sex. The yaks were either grazed on natural pasture (control diet) in a single herd or the grazing yaks was supplemented with one of the three protein rich supplements containing low (17%; LP), medium (19%; MP), or high (21%; HP) levels of crude proteins for a period of 30 days. Results: Results showed that the average daily gain of calves increased (0.14 vs 0.23-0.26 kg; p<0.05) with protein concentrates supplementation. The concentration of plasma methionine increased (p<0.05; 8.6 vs $10.1-12.4{\mu}mol/L$), while those of serine and tyrosine did not change (p>0.05) when the grazing calves were supplemented with protein concentrates. Compared to control diet, the insulin level of calves increased (p<0.05; 1.86 vs $2.16-2.54{\mu}IU/mL$) with supplementation of protein concentrates. Addition of protein concentrates up-regulated (p<0.05) expression of mTOR-raptor, mammalian vacuolar protein sorting 34 homolog, the translational regulators eukaryotic translation initiation factor 4E binding protein 1, and S6 kinase 1 genes in both Longissimus dorsi and semitendinosus. In contrast, the expression of sequestosome 1 was down-regulated in the concentrate supplemented calves. Conclusion: Our results show that protein supplementation improves the growth performance of early weaned yak calves, and that plasma methionine and insulin concentrations were the key mediator for gene expression and protein deposition in the muscles.

• 한국콘텐츠학회논문지
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• 제15권9호
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• pp.599-605
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• 2015

본 연구는 흑미(Oryza sativa L.) 호분층 추출물이 난소절제 흰쥐의 체내 지질 및 관련 호르몬 수준에 미치는 영향을 알아보고자 수행되었다. 흰쥐를 Sham군(S), 난소절제 control군(OVX), 난소절제 이소플라본 10 mg/kg 투여군(IF), 난소절제 흑미 30 및 90mg/kg 투여군(BRE-30, BRE-90)으로 나누어 12주 동안 고지방식이(45% calories from fat)를 급여하였을 때, 체중 증가량, 체지방무게 및 비만지수는 OVX군에서 증가하였으나, 이소플라본 및 BRE 투여에 의해 유의하게 감소되었다. 혈중 중성지방은 BRE-90군이 OVX군에 비해 유의적으로 낮았고, 혈청 adiponectin 수준은 BRE군에서 OVX군에 비하여 유의하게 증가하였으며, leptin 수준은 대조군인 OVX군에 비하여 유의적으로 감소하였다. 간 중 총지질과 중성지방 및 콜레스테롤은 유의적이지는 않았으나 BRE 투여군에서 OVX군보다 감소하는 경향을 보였다. 따라서, 흑미 호분층은 난소절제 흰쥐에서 지질 대사를 조절함으로써 비만 및 여성의 폐경기 관련 질병을 예방하는 식품이 될 수 있을 것으로 기대된다.

• 한국융합학회논문지
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• 제6권6호
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• pp.9-15
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• 2015

본 연구는 노인요양시설에 근무 중인 요양보호사의 구강보건지식정도와 인식도를 조사하여 구강보건의료서비스의 질적 향상과 발전 방안 연구를 목적으로 실시하였다. 연구방법은 D광역시 소재 노인요양시설(10개소)에 근무하는 요양보호사 중 연구 참여에 동의한 163명을 대상으로 2015년 5월 1일부터 5월 31일까지 설문조사한 자료를 SPSS Statistics 18. 프로그램을 이용하여 분석 하였다. 그 결과 요양보호사들의 구강보건지식은 총점 26점 만점에 20.09점(77.2%)로, 가장 높은 지식은 '올바른 칫솔질 방법' 93.0%, 가장 낮은 지식은 '구강보조용품사용 지식' 58.1%로 조사되었다. 구강보건교육경험이 있는 사람이 구강보건교육 요구도가 높았으며 (P<0.001), 구강보건교육경험횟수가 많은 사람이 구강보건지식(P<0.001), 요구도(P<0.01), 인지도(P<0.05)가 높아 유의하였다. 요양보호사들의 구강보건인식정도에 영향을 주는 것은 구강보건지식점수(P<0.01), 구강보건교육 요구도(P<0.01)가 높을수록 구강보건인식정도는 높은 것으로 나타났다. 따라서 향후 요양병원 장기입원환자의 구강특성을 고려한 효율적, 지속적, 실질적인 요양보호사의 구강보건교육이 이루어 질 수 있도록 하여야 할 것이다. 또한 구강보건교육의 담당자로 치과위생사의 역할이 필요 할 것으로 전문 인력의 배치를 위한 국가의 제도적 지원도 함께 이루어져야 할 것이다.

• 한국보육지원학회지
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• 제11권3호
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• pp.149-167
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• 2015

본 연구는 2012년 이후 실시된 국가수준의 교육과정인 누리과정과 관련된 연구의 연도별, 연구대상, 연구방법, 연구내용 등의 동향을 분석함으로써 앞으로 누리과정 연구의 방향성을 제시하는 것을 목적으로 하였다. 이를 위해 국내 학술지 검색사이트에서 "누리과정" 으로 검색된 연구물 중 5세 누리과정이 실시된 2012년 이후부터 2015년 3월까지 발표된 논문 102편을 연구대상으로 선정하여 분석하였다. 자료 분석을 위해 빈도와 백분율을 산출하였다. 연구결과를 살펴보면, 첫째, 누리과정 관련 연구는 5세 누리과정이 도입되고, 3~4세로 확대되어 실시된 2013년에 가장 많이 이루어졌다. 둘째, 연구대상에 있어서는 누리과정의 이해와 적용을 돕기 위한 관련 안내서와 자료들을 대상으로 한 연구가 전체의 66.7%로 나타나, 연구가 일부 영역으로 집중되어 있음을 알 수 있었다. 셋째, 연구방법은 양적연구가 가장 큰 비중을 차지하였고, 그 중 내용분석 방법이 가장 많았다. 그 다음으로 많이 연구된 방법은 질문지법, 문헌연구였다. 한편 실제 현장에서 누리과정을 적용하는 실험이나 관찰 연구 및 질적 방법을 통한 연구들이 상대적으로 적게 수행되었다. 넷째, 연구내용은 "누리과정 구성방향 관련연구"의 내용이 전체의 68.8%였고, 그 중 자연탐구 영역 관련 내용이 가장 많았다. 이는 지금까지의 누리과정 관련 연구들이 다양한 측면으로 접근되지 못하고 있으며, 현장 중심의 연구가 부족하므로 보완되어 연구될 필요성을 시사한다.

• 한국주거학회논문집
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• 제20권4호
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• pp.89-102
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• 2009

The purpose of this study is to investigate the influence the need for improvements to dormitory environments and to study the stress from school-life according to residential satisfaction in dormitories and housing. For the purpose of this study, a survey was conducted including a questionnaire consisting of a residential satisfaction scale, a need of dormitory environment improvement scale, and a school-life stress scale. The subjects were 453 special purpose students in Daegu and Gyeongsangbuk-do who all live in a dormitory. Factor analysis, Cronbach' $\alpha$ and MANOVA were employed for data analysis, and Scheffe test was used for post-hoc analysis. First, the lower group the satisfaction of a physical residential environment in a dormitory, the more likely it is that the dormitory environment need improvement. The result of this study suggests that dormitory students are much more sensitive to conditions relating to physical residential satisfaction than to sociopsychological residential satisfaction. Also, the residents believe that change to these physical residential conditions facilitate an improvement to sociopsychological residential satisfaction. Moreover, when the satisfaction of a physical residential environment is lower group, more perceptive stress occurs from academic, health and personal factors while a lower satisfaction for the sociopsychological residential environment results in a more perceptive stress from the environment. The result of this study suggests that dormitory conditions indicate the necessity of improving the environment to adapt well to school-life, thus reducing stress. Also when simply providing a supplementary physical residential environment the sociopsychological residential environment should be considered, as this can cause conflicts between roommates. Second, the lower group the satisfaction for a physical residential environment in housing, the more likely it is that the dormitory environment need improvement. The result of this study suggests that for environments of inadequate housing there is a strong urge towards needing more independence and a better living environment. Third, when group feel there is a more substantial difference in the physical residential environment between dormitories and housing, it is more likely it is that the dormitory environment need to be improved. Also, when they feel there is more substantial difference in the sociopsychological residential environment between dormitories and housing, a more perceptive stress is detected from the environment. The result of this study suggests that dormitory students want to have the same level of conditions as those provided in housing. Also, dormitory students want to need more physical environment improvement than sociopsychological environment improvement.

• Asian-Australasian Journal of Animal Sciences
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• 제18권5호
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• pp.704-710
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• 2005

The objective of this experiment was to compare corn and wheat in finishing pig diets in order to determine whether performance, carcass quality, fatty acid composition or fat colour is altered by choice of cereal grain. A total of 126 crossbred pigs were used in this experiment. At the start of the experiment, a portion of the experimental animals were assigned to receive a wheat-based diet formulated using soybean meal as the sole source of supplementary protein. The remainder of the pigs were assigned to a corn-based diet formulated to supply a similar level of lysine (0.65%) and energy (3,300 kcal/kg DE). At two week intervals, a portion of the pigs on the corn-based diet were switched to the wheat-based diet so that a gradient was produced with pigs being fed the corn and wheatbased diets for different proportions of the finishing period ranging from 100% on wheat to 100% on corn. There were no significant differences in the growth rate of pigs fed the two diets (p = 0.834). Pigs fed wheat tended to consume slightly less feed (p = 0.116) and had a significantly improved feed conversion (p = 0.048) compared with pigs fed corn. Choice of cereal did not affect dressing percentage (p = 0.691), carcass value index (p = 0.146), lean yield (p = 0.134), loin fat (p = 0.127) or loin lean (p = 0.217). Fatty acid composition of backfat was unaffected by the cereal grain fed (p>0.05). Total saturated fatty acid content was 33.31% for both corn and wheat fed pigs (p = 0.997) while the polyunsaturated fatty acid content was 12.01% for corn fed pigs and 11.21% for wheat fed pigs (p = 0.257). The polyunsaturated/saturated ratio was 0.36 for pigs fed corn and 0.34 for pigs fed wheat (p = 0.751). Hunter Lab Colour Scores indicated no difference either in the whiteness or yellowness of the fat. In conclusion, wheat can substitute for corn in growingfinishing pig rations without detrimental effects on pig performance. There were no differences in either the fatty acid composition of backfat or in backfat colour indicating that the decision to use wheat vs. corn needs to be made on economic grounds rather than being based on their effects on fat quality.

• Asian-Australasian Journal of Animal Sciences
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• 제12권2호
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• pp.203-208
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• 1999

An 8 week feeding trial was conducted with 864 ISA Brown laying hens, 48 weeks old, to determine if microbial phytase $(Natuphos^{(R)})$ supplementation can reduce non-phytate phosphorus (NPP) level in laying diets. The experiment consisted of four dietary treatments: T1, control diet with 0.26% NPP (0.55% total P) wand no supplementary phytase; T2, 0.21% NPP (0.50% total P) diet with 250 U of phytase/kg of diet; T3, 0.16% NPP (0.45% total P) diet with 250 U of phytase/kg of diet; and T4, 0.11% NPP (0.40% total P) diet with 250 U of phytase/kg of diet. T3 showed the highest egg production and egg weight and the lowest feed conversion while T4 gave the lowest egg production and the highest feed conversion and mortality. Daily feed consumption ranged from 130.4 g (T4) to 132.7 g (T2). T1 and T2 were not significantly different in the production parameters. Eggshell strength, egg specific gravity, and eggshell thickness were not significantly different among treatments. However, broken egg ratio was significantly lower in T2 and T4 than in T1. Retentions of Ca, P, Mg, and Cu were greater in phytase supplemented treatments (T2, T3, and T4) than the control (T1), and those in T3 and T4 were greater than in T2. Excretions of P in phytase supplemented treatments (T2, T3, and T4) were significantly (p<0.05) smaller than in T1 but excretions of N were not significantly different among the treatments. Contents of ash in tibiae were not significantly affected by treatments, but contents of Ca, P, Mg, and Zn was increased and that of Cu decreased by phytase supplementation. It is concluded that the NPP concentration in the diet of Brown layers consuming about 130 g/d of feed can be safely lowered from 0.26% (0.55% total P) to 0.16% (0.45% total P). The excretion of P was reduced by the inclusion of 250 U phytase/kg of diet.

• 한국정보시스템학회지:정보시스템연구
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• 제17권4호
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• pp.233-260
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• 2008

Universities have recognized e-Learning Systems as the critical IT resources which contribute to improving the competitiveness of the universities as well as the quality of the traditional class-based lectures. Instructors deliver the main contents in the class. Other supplementary activities like online discussions, sharing of teaching-learning materials, submission of homeworks, communication among the learners and between the instructors and the learners, and so on can be efficiently facilitated using e-Learning Systems. In other words, e-Learning Systems enable a blended learning combined class-based lectures and e-learning in a variety of ways. Nonetheless, compared to the level of implementation of e-Learning Systems, the usage of both the instructors and the learners is not high. Accordingly, this study examines the determinants to affect on the usage of e-Learning Systems from the learners perspective. To draw the key determinants, we review the IS literatures related to adoption or use of the IS like Media Richness Theory (MRT), Technology Acceptance Model (TAM), Social Influence Model (SIM), and Self-efficacy Model. The variables are drawn out to be expected on the usage of e-Learning like Media Richness, Ease of Use from MRT, TAM and Instructor's Influence, Co-learner's Influence from SIM, and Self-efficacy. To test our model and hypotheses, we have collected data in the class-based lectures using e-Learning System complementary. The results of the test with 192 data are as follows: Firstly, it shows that the Instructor's Influence and the Media Richness are the influential determinants to affect on the Perception of Usefulness of e-Learning Systems. Additionally, the Co-learner's Influence and Ease of Use in order is significant to the Perception of Usefulness. Secondly, as to the degree of use of the e-Learning Systems, the Co-leaner's Influence, the Media Richness, and the Ease of Use are, in that order, the significant determinants. The Perception of Usefulness, also, founded a key factor on increasing the use of e-Learning Systems. On the other hand, the Instructor's Influence is not significant to the use of e-Learning Systems. Finally, it has been found that Self-efficacy is significant to the Perception of Media Richness, Ease of Use, but not significant to the Perception of Usefulness.

• 한국산학기술학회논문지
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• 제21권4호
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• pp.190-200
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• 2020

본 연구는 2018년 정부의 추경사업으로 시행된 이공계 중심 청년 일자리 창출과제인 '청년TLO 육성사업'의 효과성을 검증하는 데 목적이 있다. 선행연구를 통하여 사업 만족도와 취·창업 성과에 영향을 미치는 5가지 요인의 인과 모형을 도출하였다. 실증연구를 위하여 사업을 실행하고 있는 전국 66개 대학의 산학협력단을 통해 청년TLO를 대상으로 설문지를 배포하여 2,363개를 수집하였다. SPSS 23.0 통계패키지를 이용하여 모형의 실증분석을 실시하였다. 분석결과, 사업 만족도에 영향을 미치는 요인으로 선정한 1) 모집·선발, 2) 교육 지원, 3) 근로조건, 4) 사업 관리, 5) 활동 지원의 5개 변수 모두 유의한 변수로 나타났고 사업 만족도는 취·창업 성과에 미치는 변수임을 확인했다. 본 연구는 청년 TLO의 성과분석을 위한 광범위한 최초의 실증연구이며 연구자의 독립변수 모두가 사업 만족도에 영향을 미치는 인자임을 확인했다. 실무적인 시사점으로 사업 운영요소의 향상은 사업 만족도를 향상시키고, 이는 정부의 목표인 청년의 취·창업 성과 제고를 위해 필요한 요소임을 추정할 수 있다. 하지만 본 연구의 한계점으로는 취·창업 성과 지표로 객관적 지표가 아닌 주관적 취·창업 인지도 조사이기에 모형의 해석에 유의할 필요가 있다고 판단된다.

• 한국산학기술학회논문지
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• 제21권9호
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• pp.548-558
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• 2020

본 연구는 캄보디아 왕국 씨엠립주에서 공적개발원조를 수행하고 있는 수원시의 "수원마을 조성사업"의 단계별 사업을 분석함으로써 지방자치단체 차원의 개선방안을 제시하는데 있다. 본 연구를 위하여 현장을 방문하고 담당자를 면담함으로써 사실적인 연구를 수행할 수 있었다. 연구결과 다음과 같은 결론을 도출하였다. 첫째, 우리나라의 지방자치단체 공적개발원조 사업은 중앙정부의 ODA 정책 아래 이를 실행하기 위한 세부적인 프로그램으로 진행되어야 한다. 둘째, 선심성 또는 일회적인 광역 및 기초자치단체들의 대외 이미지 제고라는 명분 아래 경쟁적으로 벌이는 사업이 아닌 수혜국에 대한 투자적 성격을 지닌 만큼 사업의 성과에 대한 평가체제와 평가결과를 토대로 사업의 지속 여부와 보완조치들이 마련되어야 한다. 셋째, 중앙정부 부처간, 지방자치단체별로 산발적인 원조가 아닌 경제 및 사회개발 부문 ODA는 중앙정부와 KOICA를 중심으로, 지방자치단체는 소규모. 소프트웨어적 부문에 집중하여 개발협력을 이루게 된다면 가시적 결과뿐만 아니라 국민의 세금을 낭비한다는 지적은 감소할 것으로 보인다. 이 연구를 통하여 지방자치단체 수준의 ODA 계획의 수립과 중앙정부와의 협력이 필요하다는 점이 시사된다.