• KSBB Journal
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• v.6 no.3
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• pp.309-319
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• 1991

A continuous stirred tank membrane reactor(CSTMR ) was developed and optimized for the production of cod skin gelatin hydrolyzates using endo-protease Alcalase. A experimental design methodology was used to optimize the four performance variables: enzyme concentration, substrate concentration, permeate flux and reactor volume. All four variables studied had an effect on substrate conversion, with enzyme and substrate concentrations being predominant. Conversion increased with the increase in enzyme concentration, with the decrease in substrate concentration, at high volumes and low flux. A strong interaction was observed between enzyme and substrate concentrations and smaller interactions between enzyme and flux and substrate and flux. The optimum operating conditions for the CSTMR process for an initial substrate concentration for 10% were $50^{\circ}C$, pH 8, flux 7.3ml/min, residence time 82 min, and Alcalase to substrate ratio 0.02(w/w). A gradual decay in reactor activity during 8 hrs was 2.1% conversion/hr. Enzyme leakage through the 10, 000 MWCO membrane was 16% at $50^{\circ}C$ and 12% at $35^{\circ}C$, 6hrs. However, there was no apparent correlation between enayme leakage and substrate conversion. The Km value for the CSTMR was 20 times higher than the batch reactor. The productivity(expressed as mg product/mg enzyme) of the CSTMR was more than six fold higher than the batch at $50^{\circ}C$. The hydrolyzate was non-bitter.

• Journal of the Korea Convergence Society
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• v.11 no.2
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• pp.225-230
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• 2020

Using the 3D printing method in the product manufacturing is a very innovative and useful technology. However, in the field of jewelry, it is a limited technology used only in a field of manufacturing process. To overcome this limitations in the jewelry production process, most popular and easy 3D printing method was selected, and the printing time and condition was limited. In this study, to find out the 3D printing method applicability to jewelry work manufacturing, the prototypes through casting and non-casting methods were completed and compared. As a result, the FDM printing method has a very positive advantage in terms of cost and time, but there is a disadvantage that the layered structure is not erased on the surface and the completeness of the surface forming is poor due to the residue of the filament generated during the printing process. The DLP printing method has the advantage that the surface treatment is even and completion is high, while the cost and time are inefficient. However, both printing methods were found to be suitable for the use of jewelry manufacturing, and if the efficient printing method was selected for the design of the jewelry in the future, better work research could be conducted.

• Journal of Digital Contents Society
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• v.19 no.8
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• pp.1433-1442
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• 2018

This study develops and improves the EZ Touch App of the scorecard application (app) using the smartphone and the pad, and works with the customer management system (C/S). The research was conducted as follows. First, how do you handle the EZ Touch input method on a scorecard? Second, how to configure the platform of customer (member) management system (C/S) and data server system? Third, does EZ Touch App work organically with customer management system (C/S)? The developed EZ Touch is entered into the scorecard as an input method using the gesture as a result of this research, and it is linked with the C/S system to organize the review function, hall information function, field coaching function through score, It can be used for applications such as information management functions and statistics through differentiated statistics. However, there are some problems and improvements in user convenience in real time use. I think there is a need to study to solve this problem in the future. EZ Touch input method is input to the scorecard by inputting gesture of the finger as a result of this study, and it is linked with this, and it is possible to use differentiated statistics such as review function, hall information function, field coaching function, It is the purpose of the study to improve the technical competitiveness of the product by developing the application.

• Korean Journal of Plant Resources
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• v.18 no.2
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• pp.270-278
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• 2005

This experiment was conducted to develop and design a product that is convenient and helpful to both patients and ordinary people who want to maintain their health. In this experimentation, the experimental rat have been given with high fat food to induce Diabetes. Organic brown rice was given as their main energy source and natural complex food, most of materials were freeze-dried, was given to observe its effects on their glucose amount in the plasma. The results are as follows. During 28 days of basal diets, as observing their weight variations, normal group gained weights, but the natural complex food(NCF) groups lost their weights. As comparing the amount of neutral fat levels in the plasma between the diabetes group who just had basal group and one who had NCF, group with NCF groups' level was much lower than the other group who just had basal food. As comparing total cholesterol levels in the plasma, with diabetes group with basal food, $50\%$ and $100\%$ NCF groups' levels were lowered than that group. Regarding HDL-cholesterol level, all NCE groups had around 30mg/dl and there were not much fluctuation among groups. As for LDL-cholesterol level, the $100\%$ NCF group had the lowest level and showed almost the same as the normal group. The amounts of the glucose in the plasma were lowered in all NCF groups. Among those NCE groups, $100\%$ NCF group had 120mg/dl to reach almost the same as the normal group.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.198-210
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• 2022

Recently, research on environmental sustainable fashion design has been conducted, but various studies on preference and purchase intention for environmental sustainable fashion products have not yet been conducted. Therefore, this paper studied the effect of the characteristics of environmental sustainable fashion products on purchase intention with preference as a mediating effect. This study focused on Generation MZ attending universities in Hubei Province, China, and a total of 350 online surveys were conducted from August 15, 2021 to August 20, 2021. Among them, 335 copies were used for the final analysis, excluding invalid questionnaires. SPSS26 and AMOS26 were used for analysis. First, the results of the analysis showed that environmental protection characteristics among the characteristics of environmental sustainable fashion products had a positive effect on preference. At the same time, environmental sustainability had a positive effect on purchase intention. Second, environmental protection and sustainability have a significant positive effect on preference. At the same time, environmental sustainability has a significant positive effect on purchase intention. Third, preference plays a significant mediating role in the relationship between the purchase intention of environmental protection.

• Journal of Digital Convergence
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• v.16 no.7
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• pp.107-116
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• 2018

One of the key mission is to develop and prompte the use National Competency Standards, which is defined to be the systemization of competencies(knowledge, skills and attitudes) required to perform duties at the workplace by the nation for each industrial sector and level. This provides the basis for the design of training and detailed specifications for workplace assessment. To promote the data-driven service improvement, the commercial product Splunk was introduced, and has grown to become an extremely useful platform because it enables the users to search, collect, and organize data in a far more comprehensive, far less labor-intensive way than traditional databases. Leveraging Splunk's built-in data visualization and analytical features, HRD Korea have built custom tools to gain new insight and operational intelligence that organizations have never had before. This paper analyzes the NCS homepage. Concretely, applying Splunk in creating visualizations, dashboards and performing various functional and statistical analysis and structure without Web development skills. We presented practical use and implications through case studies.

• Journal of The Korean Association For Science Education
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• v.43 no.6
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• pp.509-520
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• 2023

Scientific explanation is the main goal of scientists' scientific practice, and the science curriculum also includes developing students' abilities to construct scientific explanations as a major goal. Thus, clarifying its meaning is an important issue in the science education community. In this paper, the researchers identified three perspectives on 'scientific explanation' based on the scoping review method (Deductive-Nomological, Probabilistic, and Pragmatic explanation models). We argued that it is important to clarify and distinguish the meanings of 'scientific explanation' from other concepts used in science education, such as 'description', 'prediction', 'hypothesis', and 'argument' based on a review of the literature. It is also pointed out that there is a difference between 'scientific explanation' as a product and 'explaining scientifically' as communication, and several ways to revise achievement standard statements in the science curriculum are suggested, to guide students to construct scientific explanations and to help students to explain scientifically. By adopting the three scientific explanation models, the important factors to be considered were classified and organized, and examples of science learning activities for scientific explanation considering such factors were suggested. It is hoped that the discussion in this study will help establish clearer learning goals in science learning related to scientific explanation and aid the design of more appropriate learning activities accordingly.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.2
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• pp.11-17
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• 2011

As a rapid rate of social change and competitive, paradigm of industry environment manufacturing products and services is shifted. Engineers design, develop, manufacture the products and services are strongly asked competency of different new creative practices. This means while industrial structure has been shifted from mass production to various allied production and social engineering based production, qualifications of engineers are required to individual creative competency as alternatives. In order to improve the competency, engineer become the creative people have ability to develop the professional knowledge competency and expand the competency to convergence the new product and services with sensing the life and social structure shift, human engineering, psychology, and emotion. For the competency, we develop the training program "improving convergence, creativity through Art." we intend that the program should be composed of creative engineering mechanism combined creative arts mechanism. It has been operated to the engineers for 17 weeks. we will discuss the program result and research direction and utilization in depth.

• Journal of Pharmaceutical Investigation
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• v.40 no.1
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• pp.63-66
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• 2010

The "Guidance Document for Bioequivalence Study" was revised for adding to bioequivalence studies of controlled-release products after meal(Korea Food & Drug Administration Notification #2008-22, 2008.5.7). The bioequivalence study design for controlled-release products is $2{\times}2$ crossover under fast and fed condition in respect. For studies of controlled-release products under fed study, the same high-fat diet should be taken within 20 minutes in at least a 10-hour fasting state. The drug products should be administered 30 minutes after the meal started. A high-fat(more than 35 percent of total caloric content of the meal) and high-calorie(over 900 calories) meal is recommended as a test meal for fed BE studies.

• Science of Emotion and Sensibility
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• v.26 no.3
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• pp.69-82
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• 2023

High-tech sensibility textile and fashion, in which consumers' emotions and various textile and fashion technologies are converged, is an important industrial group. It is important to develop the ability to apply in practice by gathering the creative by understanding other fields and exchanging ideas through interdisciplinary collaboration in the field of emotional engineering. Through interdisciplinary research and collaboration, talent must be nurtured of individuals who would lead the era of the 4^th Industrial Revolution with the ability to empathize with others as well as the creative convergence-type intellectual ability necessary for the rapidly changing society. To determine content-creation methods, basic research is conducted. Additionally, this study investigates on the current status and educational process of the emotional textile-fashion industry worldwide. To nurture talents in the textile and fashion sensibility science, the basic contents are created to manage the knowledge that delivers sensibility science and the ICT related to this field, as well as in the intensive, PB-style conceptual design based on sensibility. The process from derivation of consumer emotion analysis and product development can be experienced through smart kit practice. Moreover, various methods are developed to set up intellectual property rights generated while developing ICT convergence products as start-ups. The study also covers new knowledge rights to develop emotional textile fashion.