• Proceedings of the PSK Conference
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• 2003.10a
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• pp.21-21
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• 2003

BT(Biotechnology) is transition stage from study and technology to mass production and one of most promising part in leading industry. After early completion of genome project, many countries keep trying their best to preoccupy in this field. Korean government support BT more than 10 years. Because their eco-compatibility and cleanness, BT is very promising part. But the big issue is the morals of genetic manipulation. (omitted)

• 제어로봇시스템학회:학술대회논문집
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• 1988.10a
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• pp.268-272
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• 1988

In this paper, we introduce the supermicro computer- based nonreal-time BTR type DNC system, which can provide valuable datas for production and management by monitoring the operation of NC equipments. (upto 48 NC machine) In accordance with manual job schedulinq, part program is combined with tool presetting datas and enables rapid downloading and uploading. An application to the production system of die & Mold plant is presented.

• Korean Journal of Microbiology
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• v.2 no.1
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• pp.19-24
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• 1964

1. Three hundred and twenty four strains of amylase producing bacteria were isolated from various sources and a high amylase producing new strain, which was isolated from MEJU, M-181, was selected for further investigations. 2. The new strain M-181 was similar to Bacillus subtilis in the characteristics. 3. Wheat bran medium was the best one for production of amylase so for as the investigations had been done. The amylase activity of M-181 was measured D$40^{\circ}\\30^{'}$ .$deg._{30'}$ 25,000 to 26,800 on the medium of wheat bran. 4. The strain M-181 did not demand phosphate for production of amylase.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.10 no.16
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• pp.27-38
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• 1987

This paper develops a standard time table using STD(Standard Tine Data) Technique in multi-product and one-unit production systems. STD leads to greater consistency between similar jobs. The constant-time and special elements will always be the same even though they pertain to different part numbers. Actually, the standards will very based on the size of the variable elements that are in control of the time. A real-field example is presented.

• Journal of the Korean Professional Engineers Association
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• v.43 no.5
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• pp.35-40
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• 2010

The world economy is threatened by rising oil prices due to the depletion of resources, and climatic changes are intensified due to rapid increase of greenhouse gases emission. Global warming is recognized as a worldwide problem not only as national level one, collaborative efforts are in progress actively. The fact is that the development of new & renewable energy which can replace fossil fuel and preserve the environment is the key of the attention in accordance with "low carbon, green growth" policy of our government. Biogas is an energy source. And the best part of using biogas is that wastes are treated in its production process.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.245.1-245.1
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• 2003

As part of our research to discover novel synthetic flavonoids which can be applied to chronic inflammation diseases, many structurally modified flavone analogs have been synthesized to obtain information concerning the relationships between structures and the anti-inflammatory activities. We previously reported that 7-methoxyflavone analogs generally exhibited strong inhibitory activities against cyclooxygenase-2 catalyzed prostaglandin production. (omitted)

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1976.04a
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• pp.183.4-184
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• 1976

Sorbose is an important raw material for the production of Vitamin C. As part of our endeavor to develop on improved vitamin C process, we first studied the sorbose fermentation process. Several important variables that influence the productivity of sorbose were considered and evaluated. The yield sorbose from sorbitol obtained was greater than 90％. Details of our experimental results will be discussed and a possible new approach to process improvement will be suggested for more efficient sorbose fermentation.

• Journal of Integrative Natural Science
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• v.1 no.1
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• pp.41-46
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• 2008

The aim of this study is to evaluate the effects essential oil from Lavendular officinalis on the production of UVB-irradiated-induced nitric oxide(NO), in vivo and in vitro. NO is a recently discovered mediator of cell communication involved in a variety of physiological and pathophysiological processes. This enzyme is present in various tissues including smooth muscle cells and macrophages and take part in several immunopathological process. In vitro, the cytotoxicity and cell viability of aroma oil was evaluated by the MTT assay in the concentration of 0.01, 0.05, 0.1%. And, the effect of aroma oil was investigated to production of NO in human fibroblast cells line CCD-986sk ($2{\times}10^5$ cell/well) after UVB-irradiation with aroma oil (0.01, 0.1, and 1%). The result showed that aroma oil did not affected the production of NO. In vivo, it was investigated to production of NO after UVB- irradiation with aroma oil. The experimental groups were divided into four groups. Aroma oil was stimulated the production of NO by itself. As the results, all of the in vitro and in vivo, aroma oil were affected production of NO by dependent the concentration-manners.

• Proceedings of the Safety Management and Science Conference
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• 2004.11a
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• pp.415-438
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• 2004

This dissertation is assumed to continuously occur adjustment cost on present investment. So, I derived from time-nonseparable production-based CAPM and tested the performance of model through data. I also compared time-nonseparable production-based CAPM with time-separable production-based CAPM and CCAPM, CAPM through testifying the performance of model. At the part of applied application, I estimated time-nonseparable PCAPM-betas. The data of Korea consists of 320 listed companies on Korea Stock Exchange (KOSPI) from first quarter 1987 to first quarter 2002. This data also is categorized by scale and industries. Additionally, I estimated time-nonseparable PCAPM-betas through 500 listed companies of New York Stock Exchange (NYSE) from first quarter 1973 to first quarter 2002. I observed the statistical significance of 230 firms by 320 companies in Korea. After that, I compared time-nonseparable PCAPM-betas by firms with time-separable production-based CAPM-betas and CCAPM-betas, CAPM-betas through individual firms. At empirical test, I found that estimated parameter of adjustment cost on time-nonseparable production-based CAPM by scale and industries in Korea had positive value and statistical significance, Moreover, this approach proved to resolve the underestimation of adjustment cost on time-separable production-based CAPM by scale and industries. I also found that the time-nonseparable PCAPM performed better than time-separable production-based CAPM and CCAPM, CAPM. The result from U.S data proved to have similarity to that of Korea. Specifically, I found that time-nonseparable PCAPM-betas by firms performed better than CAPM-betas on individual firms in Korea.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.1
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• pp.53-59
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• 2011

In this paper, the implementation of a production control system has been studied in order to obtain Realtime Cost Calculation using an exact Machine Factor and Man Factor based on RFID reader data transferred through network. For the study, microprocessor built in the controller of production facilities is used and also RFID reader is built additionally. Control part, card reader used for check the beginning and ending working time of workers, and Machine Factor and Man Factor calculated are transferred to server via PLC transmission port, serial transmission port, or Ethernet transmission port. By using the system, the production cost or the production efficiency is calculated exactly. Therefore it is possible to improve production rate and cost reduction by the use of the proposed production control system.