• 수산해양교육연구
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• 제17권1호
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• pp.115-131
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• 2005

The fishery buy-back programs were studied to analyze fishery production and CPUE. The results from this study during the concerned period can be derived as follows: 1. In total offshore fisheries, CPUE for each boat increased 8.7%, and 8 fishing categories were increased in CPUE for each boat. CPUE for tonnage increased 4.2% in total offshore fisheries field, and 7 fishing categories increased in CPUE for tonnage. In total offshore fisheries, CPUE for HP increased 6.8%, and 8 fishing categories increased in CPUE for HP. 2. The correlation coefficient of the number of fishing boats vs. production and that of the tonnage vs. production were 0.91. This means that there is a strong relation between them. The correlation coefficient of the number of fishing boats vs. CPUE for each boat and that of the tonnage vs. CPUE for tonnage were -0.73 and -0.88 respectively. This reveals that there is a relatively strong reverse relation between them.

• 수산해양교육연구
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• 제28권5호
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• pp.1365-1377
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• 2016

The purpose of this study is to find out by comparing the ability of comprehension and production of causative and passive sentences and grammatical morphemes between multicultural family children and normal children. Fifteen multicultural family children and fifteen normal children aged 7-9 years participated in this study. The results of this study are as follows; First, the children of multicultural family showed significantly a lower ability to comprehension and production of causative and passive sentences compared to normal children. Second, the children of multicultural family showed the difference about the acquisition of grammatical morpheme of causative and passive compared to normal children. Third, multicultural family children and normal children were not statistically significant differences in comprehension and production abilities of causative and passive in accordance with the increase of age.

• 한국멀티미디어학회논문지
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• 제24권1호
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• pp.125-133
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• 2021

Due to Covid-19, the un-contact culture has affected society as a whole, and the methods of education conducted offline has been greatly affected. In the private education of preparing for university entrance, the public official examinations and certification acquisition, the method of online education has been shown to have positive effects. While private class and school class which have offered in off-line to cope with rapid changes caused various problems such as decline in quality for education. Due to the characteristic of design class, practical training is important. As interactive feedback between students and educators is more important than one-way of delivering knowledge while class is conducted in online, educators have a challenge when they prepare for class. This study handles the methods of online education for the purpose of practical education methods in university nowadays, Especially, the non-face-to-face education methods for game animation production. Based on this study, I propose an effective educational method with non-face-to-face class that allows students to be satisfied and increases their knowledge, beyond face-to-face class.

• BMB Reports
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• 제47권8호
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• pp.445-450
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• 2014

Glucose regulated protein 78 (GRP78) is frequently highly expressed in tumor cells, contributing to the acquisition of several phenotypic cancer hallmarks. GRP78 expression is also positively correlated with tumor metastasis, and promotes hepatocellular carcinoma cell invasion via increasing cell motility, however, other mechanisms involving the prometastatic roles of GRP78 remain to be elucidated. Here we report that forced GRP78 expression promotes colon cancer cell migration and invasion through upregulating MMP-2, MMP-9 and especially uPA production. These effects of GRP78 are mediated by enhancing the activation of ${\beta}$-catenin signaling. Interestingly, we identify that GRP78 interacts with uPA both in the cells and in the culture medium, suggesting that GRP78 protein is likely to directly facilitate uPA secretion via protein-protein interaction. Taken together, our findings demonstrate for the first time that besides stimulation of cell motility, GRP78 can act by increasing proteases production to promote tumor cell invasion.

• 제어로봇시스템학회논문지
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• 제21권12호
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• pp.1109-1114
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• 2015

This paper presents an improved learning-based visual inspection method for auto parts inspection in severe lighting changes. Automobile sunroof frames are produced automatically by robots in most production lines. In the sunroof frame manufacturing process, there is a quality problem with some parts such as volts are missed. Instead of manual sampling inspection using some mechanical jig instruments, a learning-based machine vision system was proposed in the previous research[1]. But, in applying the actual sunroof frame production process, the inspection accuracy of the proposed vision system is much lowered because of severe illumination changes. In order to overcome this capricious environment, some selective feature vectors and cascade classifiers are used for each auto parts. And we are able to improve the inspection accuracy through the re-learning concept for the misclassified data. The effectiveness of the proposed visual inspection method is verified through sufficient experiments in a real sunroof production line.

• Journal of Microbiology and Biotechnology
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• 제28권3호
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• pp.432-438
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• 2018

Microalgae hold promise as a renewable energy source for the production of biofuel, as they can convert light energy into chemical energy through photosynthesis. However, cost-efficient harvest of microalgae remains a major challenge to commercial-scale algal biofuel production. We first investigated the potential of electrolytic water as a flocculant for harvesting Tetraselmis sp. Alkaline electrolyzed water (AEW) is produced at the cathode through water electrolysis. It contains mineral ions such as $Na^+$, $K^+$, $Ca^{2+}$, and $Mg^{2+}$ that can act as flocculants. The flocculation activity with AEW was evaluated via culture density, AEW concentration, medium pH, settling time, and ionic strength analyses. The flocculation efficiency was 88.7% at 20% AEW (pH 8, 10 min) with a biomass concentration of 2 g/l. The initial biomass concentration and medium pH had significant influences on the flocculation activity of AEW. A viability test of flocculated microalgal cells was conducted using Evans blue stain, and the cells appeared intact. Furthermore, the growth rate of Tetraselmis sp. in recycled flocculation medium was similar to the growth rate in fresh F/2 medium. Our results suggested that AEW flocculation could be a very useful and affordable methodology for fresh biomass harvesting with environmentally friendly easy operation in part of the algal biofuel production process.

• 한국실천공학교육학회논문지
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• 제2권2호
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• pp.61-67
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• 2010

인터넷기반의 IT기기의 발달과 함께 다양한 디자인을 선호하는 소비자니즈에 따른 새로운 제품의 출시를 위해서 이에 필요한 생산도구인 금형제작에 있어서도 리드타임이 짧은 금형개발기술의 필요성이 절실히 요구되고 있는 것이 현실이다. 금형개발기간 단축을 위한 공정기술이 금형개발 산업체에서의 매우 중요한 실무교육 중 하나이고, 신제품에 대한 납기단축, 품질 및 원가 세 가지 요소가 고루 갖춰지지 않는다면 경쟁에서 힘들기 때문이다. 본 논문에서는 기존의 제품개발에 따른 금형개발 교육훈련 프로그램이 체계적이지 못하고, 그리고 현실성이 부족한 교육훈련과정을 개선하여 실질적으로 현장에서 이행될 수 있는 실무기술능력 향상과 금형개발기간 단축을 위한 공정기술개선으로 실무중심 교육훈련 프로그램을 적용한 모형으로 발전시켜보고자 한다.

• 한국콘텐츠학회논문지
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• 제21권9호
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• pp.299-311
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• 2021

본 연구는 중국 통계청이 2017년의 산업연관표를 활용하여 중국 교육산업의 국민경제에 대한 파급효과를 분석함으로써 향후 중국 교육산업의 활성화를 위한 정책적 자료로 활용하는데 목적이 있다. 이러한 목적을 달성하기 위하여 산업연관표 기초분류 149개 산업을 32개 산업으로 분류하였다. 이러한 분류를 바탕으로 중국 교육산업의 생산유발계수, 감응도계수, 영향력계수, 소득유발계수, 생산세유발계수, 노동유발계수 등에 대하여 분석함으로써 중국 교육산업을 중심에 놓고 교육산업이 전체산업 속의 위치와 다른 산업 간의 관계를 파악하며 중국 교육산업의 경제적 파급효과를 알아보고자 한다. 분석 결과는 중국 2017년 교육산업의 생산유발계수 열합계는 1.719, 행 합계는 1.063, 감응도계수는 0.012, 영향력 계수는 0.020, 소득유발계수는 0.667, 생산세 유발계수는 0.035, 최종수요 10억 위안이 발생할 경우 노동유발계수는 총 31,254명(간접15,541명, 직접15,713명) 등을 보여주고 있다. 분석결과에 따라 본 연구는 중국 교육산업의 진일보 발전을 위하여 정부의 지지, 기술도입과 새로운 운영 모델의 응용, 정책적인 규정, 제도의 개선과 시장에 대한 효율적인 감독이 요구된다는 시사점을 제시하였다.

• 대한가정학회지
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• 제47권6호
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• pp.11-20
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• 2009

The purpose of this study was to investigate the perception and utilization of salted seafood in Korean women. We also asked them about their opinions on how to increase the production range of popular salted seafood. Data were collected from 1,137 women and were analyzed with SAS 9.1 program. Women aged between 40 and 59 had higher positive perception of salted seafood than women aged between 20 and 39. The older age group (i.e. 40 to 59) believed that the production of salted seafood, such as like as Kimchi and soy sauce, should be globalized because of their taste and nutritional value. However, the younger age group (i.e. 20 to 39) had negative perceptions of salted seafood because of their unhygienic production and excess amount of salt. Women aged 50 and over used salted seafood frequently as a side dish or seasoning to make Kimchi, stew, or soup. The younger age group preferred to purchase a small package (200g or less) of salted seafoods from the grocery store instead of preparing it themselves. When purchasing salted seafood, they considered the taste, manufacturer, and expiration date. Finally, all interviewees agreed on the importance of salted seafood as part of traditional Korean cuisine, and wanted to see further local development. However, manufacturing and packaging processes need to be standardized, and hygiene and nutritional contents should be improved in order to achieve good quality local production. To succeed and develop high quality salted seafood, younger consumers need to be enticed with better nutritional value, taste, and hygienic production. Furthermore, the production range of popular salted seafood needs to be expanded beyond Kimchi and Soy Sauce. Hence new recipes are needed.

• 한국초등과학교육학회지:초등과학교육
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• 제23권4호
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• pp.318-325
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• 2004

The purpose of this study is to improve the experiment of dihydrogen production which was newly added to the 7th curriculum of the elementary science education. For this study, the teachers who had taught 6th grade students were asked about the difficulties they ever had in the dihydrogen production experiment by questionnaire. And the contents of the science textbook and teachers' guide book were analyzed. According to this investigation, the following controversial points were found. First, they didn't have exact explanations about the concentration of hydrochloric acid and the quantity of hydrochloric acid and magnesium in the science textbook and teachers' guide book. Second, the experiment which can show well the nature of dihydrogen was not included because of the safety problem. So this paper presents the ideal condition for the production of dihydrogen and an experimental method to show the nature of dihydrogen. The most ideal condition of dihydrogen production includes 40 mL of 2 molarity hydrochloric acid and 1 g of magnesium. It took 5' 42＆apos; on average to gather two bottles (250 mL) of dihydrogen. In this condition it was possible to reduce the risk of accidents and to economize the materials. This paper proposes the experiment of dihydrogen explosion with a test tube and a film box which is not included in the 7th scince textbook. If teachers show the experiment of dihydrogen explosion with a test tube or film box to students at a class, it will be more interesting for students. And they will be able to help students to understand that dihydrogen can be gathered.