• Proceedings of the KAIS Fall Conference
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• 2001.05a
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• pp.290-291
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• 2001

The relationship between velocity, viscosity, diffusion coefficient, mass transfer coefficient and characteristic length and mass transfer data can be correlated by dimensionless relationship in electrolytic process. The performance of dyestuff removal was decreased as the flow rate of electrolyte was increased. It was due to the effect of retention time decreasing was superior to that of turbulent inlet mixing. Sh/Sc$\^$1/3/ vs Re plot for Al flat electrode did not showed the general tendency of the relationship between Sh/Sc$\^$1/3/ and Re. It can be thought that flow rate was not sufficiently high to increase the effect of mixing.

• Journal of Digital Convergence
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• v.17 no.1
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• pp.327-335
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• 2019

Personalized production represents the changing production and consumption in the fourth industrial revolution. Manufacturers in each field are making great efforts to introduce this concept, but it is difficult to find a flow of change such as in the craft industry, especially in the workshop system. I will try to measure the possibility of fusing personalized production in the craft workshop in accordance with the changing production and consumption. To do this, we examined the concept and examples of mass custom production, which is a similar system, and defined the customized production. Then, we recognized the production status of the modern craft workshop and consequently examined the possibility of convergence based on two basic points of productivity and communication.

• Asian-Australasian Journal of Animal Sciences
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• v.7 no.1
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• pp.57-61
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• 1994

The study was conducted at low lying areas in Pabna Sirajgong districts of Bangladesh. To observe the potentiality of bio-mass production two trials were conducted. In first trial maize intercropped with Khesari taking 15 experimental plots of each size $5m{\times}5m$ were arranged in 5 blocks having homogenous soil characteristics. The study showed that the bio-mass yield of sole maize and sole Khesari were 35.25 t/ha. and 56.80 t/ha. respectively and there was a significant difference (p < 0.01) among them. The results also showed that bio-mass yield of maize and Kherasi was higher ($70.04{\pm}6.25t/ha$, $98.88{\pm}10.77t/ha$ and $80.56{\pm}9.5t/ha$) compared to sole maize and sole Khesari and land equivalent ratio was also lower. For second trial, one hectare of land was divided into 16 experimental plots with 4 replications in each plot. Four levels of urea (0 kg/ha, 30 kg/ha, 45 kg/ha, and 60 kg/ha.) were applied to experimental plot. The seed rates were 98.8 kg/ha (farmer's practice), 86.45 kg/ha, 74.1 kg/ha and 61.75 kg/ha. average bio-mass yield of matikalai at different seed rates along with urea fertilizer ranged from 38.49 t/ha, to 65.35 t/ha. the highest seed rate along with highest fertilizer also correspond to the peak production (65.35 t/ha) and the lowest seed rate (61.75 kg/ha) along with the lowest fertilizer rate (30 kg/ha.) showed lowest production (38.49 t/ha.). Here, it was found that the bio-mass yield of matikalai increased with the incremental amount of seed, indicating significant effect (p < 0.05) of seed rates on the bio-mass yield of matikalai. On the other hand, fertilizer doses in different treatment combinations had significant effect (p < 0.05) on bio-mass yield. Two levels of seed rates at zero level of fertilizer were recommended : 86.45 kg/ha for the resource rich farmers and 61.75 kg/ha for the resource poor farmers.

• 한국생물공학회:학술대회논문집
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• 2002.04a
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• pp.205-207
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• 2002

Experiments were carried out to the effect of various amino acids on the production of tetraacetylphytosphingosine (TAPS). Among various amino acids were tested, cysteine decreased the production of TAPS at 7 days of flask culture. Especially, Serine is precursor of TAPS but didn't affect the production of TAPS. Glycine and glutamate increased the production of TAPS. Especially, glutamate increased 20% of cell mass and 37% of TAPS production.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.262-266
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• 2016

Marine copepods are ideal live prey for fish larvae, and many studies on the mass culture of the organism have been reported. This study performed a mass culture of the brackish copepod Paracyclopina nana containing nauplius and C4-adult production methods. In nauplius production, the harvested nauplii over 95% were comprised of N1 and N2. Daily mean nauplius production of two trials for 15 days were $6.9{\times}10^6$ and $7.2{\times}10^6$ individuals, respectively. The densities of the adult females were maintained at a similar level of the initiation during production. In C4-adult production, the proportion of harvested copepods containing C4-adult males, females and ovigerus females were 49%, 28%, and 18%, respectively. The daily mean nauplius production of the two trials for 16 days were $8.2{\times}10^5$ and $9.0{\times}10^5$ individuals, respectively. As a result, the continuous production of P. nana using the mass production system was successful. Therefore, the continuous and stable feeding for fish larvae in aquaculture would be possible by the selection of the copepod culture method depending on the mouth size of the fish.

• International Journal of Advanced Culture Technology
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• v.8 no.1
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• pp.213-217
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• 2020

In this paper, we present that Virtual Reality (VR) is a type of media that has attracted interest in storytelling and media utilization. VR was first discussed as a specific narrative medium with traditional story medium. Via this discussion, The innate difference of VR is that the role of the media users in which the narrative is communicated were active in the development of the narrative unlike that of most classical narrative media. We also discussed specific features related to VR based on the theories of traditional literary criticism, movie reviews, and plays. Through these discussions, we aruged two directions of VR storytelling production as an narrative medium, its specificity, and its expressiveness for VR producers. First, story processing and characters can be introduced as part of continuing a new narrative by altering the interaction history that appears in VR stories to user interest ratings. Second, VR interaction responds intuitively to the idea that it represents a trajectory across the story surface of all possible interactions. More specific theories and controvercials are discussed.

• Korean Journal of Computational Design and Engineering
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• v.14 no.3
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• pp.186-196
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• 2009

Mass customization (MC) is a business practice that aims to provide customers with customized products and services at near mass production efficiency. To achieve the aim, a number of methods to implementing MC are proposed. However, most of them require changes in entire process of the company, which make companies hesitate to implement MC even if it is essential to survive. In this paper, we proposed alternatives to partially implement MC for quick adaptation of MC. The base line assumption is not to change the production lines. The pros and cons of alternatives are given by qualitative and quantitative evaluation. Especially, by giving radar chart analysis of the quantitative measures, we give insight on the changes in the business performance measures, such as time to market and cost. Proposed alternatives are based on sub-processes such as purchasing raw materials, production process changes and packaging for efficient logistics. In this way, companies are able to provide customized products with small changing of the current manufacturing system. The process and benefit of the proposed strategy is verified by real world cases of a Korean health food company.

• The Korean Journal of Food And Nutrition
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• v.14 no.4
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• pp.355-359
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• 2001

The purpose of this study was to compare the level of blood glucose and lactate and also plasma LDH production of college women in relation to exercise. College female student which majored athletics (E, exercise group, n=43) were recruited and compared with college women (Control group, n=60). Anthropometric measurements, triceps skinfold thickness were measured of two groups. And body fat mass and waist and hip circumferences were measured and the concentrations of plasma glucose, lactic acid and lactic acid dehydrogenase (LDH) were also assayed. Average height and weight of E group were slightly higher than that of control group. but there is no difference in body mass index (BMI) and waist hip ratio (WHR) between two groups. The percentage of body fat and body fat mass(kg) in E group was slightly lower than that of control group. Plasma glucose and LDH levels of E group were higher than those of control group, and plasma lactic acid concentration was significantly increased.

• Journal of the Korean Society of Industry Convergence
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• v.23 no.2_2
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• pp.351-359
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• 2020

The algae biomass is considered as one of the potential sources of ocean renewable energy because it can be easily mass-produced with abundant sunshine in the vast ocean space. However, the practical use of the biomass has been hindered by the lack of efficient and cost-effective harvesting and maintenance system so far. The algae biomass aquaculture systems are installed in far offshore locations in much larger scales compared to the conventional aquaculture systems so that the automatic seaweed planting and harvesting system needs to operate in heavy sea conditions in far offshore location. In this research, we develop a concept design of a mega-scaled aquaculture system and an automatic seaweed planting and harvesting system, which can operate in heavy seas and mass-produce the algae biomass.

• 한국생물공학회:학술대회논문집
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• 2005.10a
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• pp.312-315
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• 2005

A process for efficient recycle fed-batch culture was carried out to increase cell mass and spore production by Lactic acid bacteria isolated from Kimchi. A large quantity of cell mass obtained by feeding concentration of sugar in recycle fed-batch culture. When the high density of salt was created that the cell mass was come-down. In this study, cultured in different feeding concentration of sugar conditions. Lactic acid bacteria by recycle fed-batch culture was investigated in 2L working volume of fermenter, obtained the maximum cell mass was 15.17g/L.