• 생명과학회지
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• 제10권1호
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• pp.1-6
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• 2000

Larval development, adult longevity and oviposition of the beet armyworm, Spodoptera exigua H bner was studied at 16, 20, 25 and 3$0^{\circ}C$ with a 16L: 8D photoperiod. Egg hatchability of S. exigua was the highest at 3$0^{\circ}C$ and reduced with decreasing temperature. Egg period was the shortest at 3$0^{\circ}C$ and prolonged with decreasing temperature. Percent pupation was became higher at higher temperature form 23.2% to 94.0%. Developmental period of larva was the shortest at 3$0^{\circ}C$, but extended with decreasing temperature. Adult emergence ratio was the highest at 3$0^{\circ}C$ and reduced with decreasing temperature. The mean pupal period was 35.2, 14.4, 7.8 and 5.0 days at 16, 20, 25 and 3$0^{\circ}C$, respectively. Relationships between constant temperature and the developmental velocity of egg, larva and pupa were linear. Developmental threshold temperature seems to be 13.3 8$^{\circ}C$ for egg, 14.02$^{\circ}C$ for larva, 14.09$^{\circ}C$ for pupa, and 13.84$^{\circ}C$ for egg the adult. Estimated value of the total effective temperature for completing each stage was 36.89 day-degree for egg, 155.72 day-degree for larva, 79.20 day-degree for pupa, and 273.41 day-degree for egg to adult. Female longevity varied to temperature from 11.4 days at 16$^{\circ}C$ to 5.8 days at 3$0^{\circ}C$, and male longevity was longer than that of female. Preoviposition period was the shortest at 3$0^{\circ}C$, but prolonged with decreasing temperature. It was about 2.7 times longer at 16$^{\circ}C$ than that at 3$0^{\circ}C$. Number of eggs per female was the highest at $25^{\circ}C$, followed by 20, 30 and 16$^{\circ}C$.

• 한국간호교육학회지
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• 제5권1호
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• pp.118-132
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• 1999

To improve the effectiveness and efficiency of public health personnel training, we evaluated not only how appropriate the students felt the objectives, contents, methods and multimedia used in the train ing courses, but also how much the students accomplished the objectives and applied skill and knowledge to their own works. We selected 5 courses for the study : Tuberculosis control, Radiological technique, Public health information, Immunization, Mental health management courses used by Kirkpatrick's evaluation model. Reaction evaluation was carried out in final day by questionnaire. The results showed that all of them were very satisfied with educational input and curricula, learn Ing environment. Secondly, we measured the degree of learning achievement on pre and post training by questionaire of specific behavioral objectives. The degree of learning achievement was statistically higher just after training than pre training (paired t-test, p<0.01). Thirdly, evaluation of behavioral change to job was conducted to find out how much students applied skill and knowledge to their own job in 3 months after training by questionnaire. The results of behavioral change evaluation showed that 43.5% of the students who were performing job related with the training courses in 3 months after training applied the learned skill and knowledge to their own job quite well and 37.8% of them applied relatively well, therefore total 81.4% of them applied to their own job. And effectiveness of training for the above mentioned students showed that 41.9 % of them had improved or enforced their jobs after training, 35.5% of them had had no remarkable changes, and 15.7% had newly applied the learned skill and knowledge to their jobs. For evaluating the degree of usefulness of material predistribution in two weeks before training, we compared experimental groups with control groups. The results showed that general reactions are helpful but the degree of learning achievement is no discrepancy.

• 한국환경생태학회지
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• 제24권2호
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• pp.130-138
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• 2010

본 연구는 태안해안국립공원과 순천만 거주자의 인식조사에 기초하여 연안습지의 현황을 평가하고 연안습지의 보전과 지속가능한 이용에 관한 기본틀 수립 및 향후 관리방안 설정을 위한 기초자료 수집의 목적으로 진행되었다. 이를 위해 주민 직접기입 방식의 설문조사를 실시하였고 총 98매(태안해안국립공원: 38매, 순천만: 60매)의 설문지가 유효 표본으로 이용되었다. 주민의 만족도 조사에서 자연환경은 순천만과 태안해안국립공원이 유사하게 나타나 두 지역간 만족도 차이는 없다고 할 수 있다. 그리고 생활환경도 비슷하게 나타났다. 뿐만 아니라 전체 환경에 대한 만족도는 순천만과 태안해안국립공원이 비슷하게 나타났다. 두 지역 주민들은 사회 경제환경에는 만족하지 않은 것으로 나타났다. 연안습지에 대한 중요도를 묻는 질문에 두 지역 모두 중요하다고 답한 사람이 매우 높게 나타났다. 습지의 개발과 보전에 대하여 어떻게 인식하는지에 대한 결과로는 두 지역 모두 보전과 완전보전을 원하는 사람이 현재 습지나 자연환경의 보전이 잘되고 있는 것처럼 보전을 더욱 원한다는 것을 알 수 있다. 따라서 앞으로 연안습지의 개발과 보전에 대한 이상적인 관리방안을 제시할 때, 주변 환경이 양호한 순천만과 같은 경우에는 현재 상태를 유지하면서 최소한의 개발을 유도하여야 하며, 태안해안국립공원과 같이 양호한 자연환경과 개발 잠재력이 있는 공존지역은 습지생태계를 보전하면서 자연과 어우러지는 개발 즉, 지속가능한 개발과 생태관광지로 유도되어야 할 것이다.

• 한국작물학회지
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• 제57권1호
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• pp.35-40
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• 2012

본 연구는 현미의 새로운 가공법 개발을 위하여 현미의 과피층을 0%, 5%, 및 10%를 도정하여 이에 따른 현미의 단백질 및 총 식이섬유 함량변화를 조사하였다. 그리고 쌀의 품질 특성 조사를 위하여 과피층 제거 정도 따른 알칼리붕괴도(ADV)를 조사하고 현미밥의 경도, 끈기, 인성 및 부착성을 측정하였다. 그 결과, 설갱벼를 제외하고 과피층이 감소할수록 현미의 단백질 및 총 식이섬유 함량이 감소하는 경향을 나타내었다. ADV는 삼광벼가 과피층 제거에 의하여 유의적으로 증가하는 경향을 나타내어 과피층 제거에 의하여 호화가 용이해질 것으로 판단된다. 또한 현미밥의 기계적 식미치를 측정한 결과, 백진주벼 및 큰눈벼의 경도 및 인성은 감소하였고, 백진주벼, 큰눈벼, 설갱벼의 끈기 및 부착성은 증가하였다. 그리고, 과피층 제거에 의하여 백진주벼<삼광벼<큰눈벼 순서로 부착성-경도 비율이 증가하는 결과를 보였다. 따라서 밥맛이 따라서 과피층의 부분적인 도정이 현미의 품질 및 식감을 향상시킬 것으로 기대된다.

• 대한토목학회논문집
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• 제29권1D호
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• pp.161-166
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• 2009

고해상도, 고정밀도의 초고차항 전 지구 중력장모델은 현대측지학, 지구물리학, 지구동력학 및 해양학 등 다양한 과학 분야의 발전에 있어서 매우 중요한 의미를 가지고 있다. 본 연구에서는 최근 미국 국가지형정보국(NGA)에서 발표한 초고차항 중력장모델 EGM2008을 소개하고, 초고차항 중력장모델 개발에 있어서의 문제점과 연구현황을 살펴보았으며, 남한지역에서 의 정확도를 분석하였다. 우선 EGM2008을 기존의 전 지구 중력장모델 EGM96 및 한국의 고정밀 합성 지오이드모델인 KGEOID08과 모델 간 정밀도를 비교하였고, 위성측지기준점의 타원체고와 정표고를 이용해 절대 정확도를 평가하였다. 전반적으로 EGM2008은 KGEOID08과 비슷한 높은 정확도를 보였으며, 이는 향후 지역적 지오이드의 개발 또는 전 지구적인 중력장 분석에 큰 도움을 줄 것으로 판단된다.

• International Journal of Contents
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• 제17권1호
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• pp.37-53
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• 2021

With the advent of the 5G era, smart phones and communications network technology have progressed, and mobile short video of people's life can be made, Of the new tools of communication, at present, China's social short video industry has shown rapid development, and the most representative of the short video app is Douyin (international version: Tiktok). Under the background of Uses and Gratifications Theory, this study discusse the relationship between Douyin users' preference degree, use motivation, use satisfaction and attention intention. This study divides the content of Douyin video into 10 categories, selects the form of an online questionnaire survey, uses SPSS software to conduct quantitative analysis of 202 questionnaires after screening, and finally draws the following conclusions: (1) The content preference degree of Douyin short video (the high group and low group) is different in users' use motivation, users' satisfaction degree and users' attention intention. ALL results are within the range of statistical significance.(2) Douyin users' video content preference degree has a positive impact on users' use motivation, users' satisfaction degree, and users' attention intention. (3) Douyin users' motivation has a positive impact on users' satisfaction and user' attention intention. (4) Douyin users' satisfaction degree has a positive impact on users' attention intention. Based on the research results, we suggest that Douyin platform pushes videos according to users' preferences. In addition, as the preference degree has an impact on users' motivation, satisfaction degree and attention intention of using the platform, it is important that the platform's focus should to pay attention to the preference degree of users. Collecting users' preferences at the early stage of users' entering the platform is a good way to learn from, and doing a good job of big data collection and management in the later operation.

• 한국환경복원기술학회지
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• 제10권5호
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• pp.10-19
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• 2007

The objectives of this study are to suggest the future development direction and improvement plan by analyzing the status of operation and satisfaction degree of cheonggyecheon ecological interpretation program. For the purpose, this study used the questionnaire about the satisfaction degree of program which were divided into two groups, adults and children and analyzed the result of program operation from 4th of April to 31 th of October in 2006. The result are as follows; 1. The total degree of satisfaction of adult is more higher than the children's. 2. The result of regression analysis shows the ecological interpretator variable turns out the most influential factor of satisfaction degree of program. 3. The most of visitor prefer the program which can experience diverse sense on the flora and fauna in cheonggyecheon. Therefore, it is needed to develop the program which can take children's fancy and experience diverse sense on the fauna and flora as well as improve the level of ecological interpretation.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2004년도 추계 학술발표회 제16권2호
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• pp.501-504
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• 2004

This paper proposes degree of hydration based shrinkage prediction model of 40MPa HPC. This model shows degree of hydration which is defined as the ratio between the hydrated cement mass and the initial mass of cement is very closely related to shrinkage deformation. In this study, degree of hydration was determined by CEMHYD-3D program of NIST. Verification of the predicted degree of hydration is performed by comparison between test results of compressive strength and estimated one by CEMHYD-3D. Proposed model is determined by statistical nonlinear analysis using the program Origin of Origin Lab. Co. To get coefficients of the model, drying shrinkage tests of four specimen series were followed with basic material tests. Testes were performed in constant temperature /humidity chamber, with difference moisture curing ages to know initial curing time effect. Verification with another specimen, collected construction field of FCM bridge, was given in the same condition as pre-tested specimens. Finally, all test results were compared to propose degree of hydration based model and other code models; AASHTO, ACI, CEB-FIP, JSCE, etc.

• 한국치위생학회지
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• 제13권2호
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• pp.315-322
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• 2013

Objectives : The purpose of this study was to investigate the relationship between the degree of family support and the degree of satisfaction in clinical practice by dental hygiene students. Methods : In this study, convenience sampling was conducted in 272 dental hygiene students from 3 dental hygiene colleges in South Jeolla Province, from October 4 through 15, 2010. A survey was conducted by using structured questionnaires. The data was analyzed by t-test, a one way ANOVA, and Pearson correlation coefficient. Results : Family support according to general characteristics showed a significant difference by economic status(p<0.001), satisfaction of major(p<0.01), and interpersonal relationship(p<0.05). Satisfaction degree on clinical practice according to general characteristics showed a significant difference by satisfaction of major(p<0.05) and interpersonal relationship(p<0.05). The relationship between generally perceived family support correlated with the degree of satisfaction in clinical practice(r=.154, p<0.05). Conclusions : It was found that a higher degree of satisfaction in clinical practice depends on a higher degree of family support. Therefore it is required to program development to improve satisfaction level of clinical practice by family support.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권6호
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• pp.3165-3181
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• 2019

Spherical videos, which are also called 360-degree videos, have become increasingly popular due to the rapid development of virtual reality technology. However, the large amount of data in such videos is a huge challenge for existing transmission system. To use the existing encode framework, it should be converted into a 2D image plane by using a specific projection format, e.g. the equi-rectangular projection (ERP) format. The existing high-efficiency video coding standard (HEVC) can effectively compress video content, but its enormous computational complexity makes the time spent on compressing high-frame-rate and high-resolution 360-degree videos disproportionate to the benefits of compression. Focusing on the ERP format characteristics of 360-degree videos, this work develops a fast decision algorithm for predicting the coding unit depth interval and adaptive mode decision for intra prediction mode. The algorithm makes full use of the video characteristics of the ERP format by dealing with pole and equatorial areas separately. It sets different reference blocks and determination conditions according to the degree of stretching, which can reduce the coding time while ensuring the quality. Compared with the original reference software HM-16.16, the proposed algorithm can reduce time consumption by 39.3% in the all-intra configuration, and the BD-rate increases by only 0.84%.