표면개질된 Pinus rigida 분말을 이용한 하수의 질소,인 제거

정명선 ( Myoung Sun Jeong ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.2

This research was performed to clarify the mechanisms of nitrogen and phosphorus removal by wood powder. In this work, Pinus rigida which is abundant in Korea and has no economic value was used in preparation of the wood powder as a sorbent material. The experiments were carried out in 2 phases, isothermal adsorption test, column test. The results of adsorption test fitted well the Langmuir and Feundlich isothermal equations. Mixed powder which contained 50% bark powder and 50% woody powder exhibited higher adsorption bond energy and adsorption capacity than woody powder alone. Effects of sulfate and organic matters on phosphate uptake by mixed powder were studied by running equilibrium column tests at background sulfate and COD concentrations, 300mg/L and 150mg/L, respectively. The effects of sulfate and COD were not evident, while the removal of TN and PO4-P was over 99% and 98%, respectively. It was found that the mixed powder was effective in the selective removal of nitrogen and phosphate.

기술사업화 활동이 기업의 경영성과에 미치는 영향

정명선(Myoung-Sun Jeong) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.4

국내에서는 주력 산업의 지속적인 경쟁력 확보, 고부가가치의 미래 신산업을 창출할 수 있는 세계 일류 기술의 발굴 및 지원이 요구됨에 따라 기초연구에 대한 관심이 높아지고 있다. 하지만 기업이 기초연구의 결과물을 활용하여 사업화하는데 있어서 여러가지 문제점이 나타나고 있는데 이것은 기초연구 결과를 사업화하기 위한 경험 및 관련 활동이 부족하기 때문인 것으로 알려져 있다. 따라서 본 연구에서는 기초·원천 연구의 기술사업화 활동이 경영성과에 미치는 영향을 분석하고자 하였는데, 기술사업화 활동의 유형을 기술사업화 추진경험, 기술사업화 전담부서, 기술사업화 컨설팅으로 구분하였으며, 기술혁신 활동, 기술혁신 역량을 세분화 한 분석모형을 개발하고 경영성과에 미치는 영향을 분석하였다. 그 결과, 기술사업화활동은 경영성과에 긍정적인 영향을 주는 것으로 나타남에 따라 기술사업화 활동의 중요성을 확인할 수 있었으며, 기술혁신활동의 경우도 경영성과에 긍정적인 영향을 주는 것으로 분석되어 기업의 전략적 요소로 그 역할을 파악할 수 있었다. 마지막으로 기술혁신 역량은 경영성과에 부분적으로 영향을 주는 것으로 조사되어 전략적인 연구개발 인프라의 구축이 필요한 것으로 파악되었다. In Korea, interest in basic research is growing, in order to ensure the sustainable competitiveness of the main industries and to support world-class technology that can create high added value in the future. However, companies are known to encounter various problems when attempting to market products based on the results of basic research, which is known to be due to their lack of experience of commercialization and related activities. Therefore, in this study, we tried to analyze the effect of the technology commercialization activity stemming from basic science and technology research on the business performance. The technology commercialization activities are divided into experience of commercialization, complete charge department, and consulting on technology commercialization and we developed an analytical model that (distinguishes between?) the technology innovation activities and technology innovation capabilities and analyzed their impact on the business performance. As a result, the importance of technology commercialization activities was confirmed by the fact that it had a positive effect on the business performance, while the technological innovation activity was found to positively affect the management performance, demonstrating that it plays a strategic role in companies. Finally, it was found that the technology innovation capacity partially influences the management performance and that it is necessary to establish a strategic research and development infrastructure.

기업의 지식경영 성공요인이 직무충실도 및 조직성과에 미치는 영향

정명선(Myoung-Sun Jeong) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.11

최근 경영환경이 지속적으로 변화되고 과열 경쟁이 이루어지게 되면서, 기업은 시대에 대처하기 위하여 지식경영을 도입하여 기업의 가치 증대 및 경쟁력 강화를 유도하고자 하고 있다. 지식경영은 새로운 지식을 창조하고, 창조된 지식을 조직 전 영역에 확산시키고 이를 통해 상품이나 서비스, 시스템으로 형상화하는 것으로 지식을 기반으로 하는 기업운영방식을 말하는데, 본 연구에서는 구조방정식모형을 바탕으로 지식경영 핵심성공요인이 직무충실도 및 조직성과에 미치는 영향과 그 관계에서 조직학습의 매개효과에 대해 알아보았다. 또한 지식경영에 미치는 주요 핵심요인으로 조직문화, 정보기술, 프로세스를 활용하였으며, 조직학습은 실험학습, 간접학습, 공유학습으로 유형화하여 분석하였다. 그 결과에 의하면, 지식경영은 직무충실도 및 조직성과에 긍정적인 영향을 미치는 것으로 나타났으며, 조직학습을 매개로 하여 직·간접적으로 직무충실도와 조직성과에 긍정적인 영향을 주는 것으로 분석되었다. 따라서 기업에서 지식경영 활용의 중요성을 확인할 수 있었으며, 기업이 지식경영 및 조직학습을 적용하는데 있어 적절한 적용범위를 제시할 수 있었다. Recently, due to the continuous changes inthe business environment and increased competition, enterprises are introducing technology management to increase their value and enhance their competitiveness. In this study, based on the structural equations model, we investigated the effects of the core success factors of knowledge management on job fidelity and organizational performance and the mediating effects of organizational learning. In addition, organizational culture and information technology and process were assumed to bethe key factors affecting knowledge management, and organizational learning was represented by experimental learning, indirect learning, and shared learning. As a result, it was found that knowledge management positively affects business fidelity and organizational performance and, even when it is mediated byorganizational learning, it positively affects business fidelity and organization performance directly or indirectly. Therefore, we were able to confirm the importance of utilizing knowledge management in companies and to suggest an appropriate application scope for applying knowledge management and organizational learning.

표준특허를 활용한 정보통신산업 분야 경쟁력 분석: 트랜드 및 네트워크 분석을 중심으로

정명선(Myoung Sun Jeong) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.6

국내에서는 정보통신산업의 확장과 미래 경쟁력 확보를 위하여 기술개발 및 기업육성을 위한 활동들을 추진하고 있으나 차별화된 전략이 부족한 실정이다. 이에 본 연구에서는 표준특허를 중심으로 한 분석을 통해 관련 기술동향과 융복합 정도를 파악함으로써 정보통신산업 분야의 효율적인 미래기술 발전전략을 수립하는데 방향을 제시하고자 하였다. 기존의 연구가 일반적인 기술적 흐름만을 살펴보았다면 본 연구에서는 파급효과와 활용성이 큰 표준특허를 중심으로 연구함으로써 급변하는 기술변화 속에서 미래 산업 예측을 명확히 할 수 있다. 본 연구에서는 정보통신산업 관련 표준특허 1,983개를 분석하여, 전 세계 주요 특허출원인과 세부기술별 특허 동향을 파악하였다. 또한 키워드분석을 통해 기술 동향을 조사하였으며 네트워크분석을 통해 정보통신기술의 융복합성 정도를 조사하여 대상 기술 분야인 정보통신산업에 대한 연구방향을 확인할 수 있었다. 전자부품 및 무선통신 분야는 표준특허가 상대적으로 적은 반면 타 산업 기술과의 융합성이 높게 나타났고 컴퓨터 정보 프로세스와 통신·방송기술은 서로 관계성이 높아 표준특허에서 융복합 기술로 활용할 만한 것으로 분석되었으며 광학 및 영상·음향기기 분야는 표준화 활동정도가 높은 것으로 파악되었다. This study aims to establish an efficient future technology development strategy in the information and telecommunications industry by grasping related technology trends and fusion complexity through an analysis based on standard patents. Analyzing 1,983 patents related to the information and telecommunications industry identified the trends in major patent applicants and detailed technologies in the world. In addition, technology trends were investigated through keyword analysis to examine the degree of complexity in information and communications technology, confirming the direction of research in information technology. Electronic component and wireless communications fields have relatively few standard patents, but they are highly convergent with other industrial technologies. Computer information processes and communication and broadcasting technologies are highly related to each other, so they can be used as standard fusion technologies in standard patents. In addition, standardization activities in optical and image/sound devices are found to be high.

2단 간헐폭기 시스템에서 aeration cycle이 질소 및 인 제거에 미치는 영향

정명선(Jeong Myoung Sun),이준호(Lee Jun Ho),서광범(Seo Kwang Bum),김영관(Kim Yeong Kwan) 강원대학교 산업기술연구소 2003 産業技術硏究 Vol.23 No.1

This bench-scale research investigated the aeration cycle(on/off) as the controlling factors for nitrogen and phosphorus removal in a 2-stage, intermittent aeration process. At this experiment, the aeration cycle time(air-on/air-off) was 30min/30min, 60min/60min, 90min/90min. Organic matter removal was observed more than 90% regardless of the aeration cycle and phosphorus removal was relatively high when the aeration cycle time was 60min/60min. On the other hand, For all of the aeration cycle, TN removal was appeared less than 55%. This result was probably due to the limitation of the external substrate for heterotrophic nitrification and aerobic denitrification.

표면개질된 Pinus rigida 분말에 의한 하수처리 효율개선

정명선 ( Myoung Sun Jeong ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.2

This research was performed to clarify the mechanisms of nitrogen and phosphorus removal by wood powder and to subsequently provide kinetic parameters for activated sludge process. Mixed powder was added directly to the aeration basin in the activated sludge process. The COD and phosphorus removals in the reactor were increased by 10 ~20%, 50~60%, respectively. Addition of the mixed powder achieved over 80% on nitrogen removal. Dewaterability of the sludge was determined by measuring the capillary suction time(CST). The sludge produced from the process with the mixed powder exhibited improved dewaterability, which was probably due to the conditioning effect of FeCl3 solution used in preparation of the mixed powder. The heat of sludge was also increased from 3,642kcal/kg to 5,748kcal/kg by the addition of the powder to the activated sludge process. The result of activated sludge system operation provided an evidence that the addition of wood powder to the system could enhance the overall treatment efficiency.

구조방정식 모형을 활용한 표준화 장애요인과 기업의 장애극복방안에 관한 실증연구

정명선(Myoung-Sun Jeong) 한국산학기술학회 2018 한국산학기술학회논문지 Vol.19 No.3

기업은 자사의 제품과 기술의 상호운용성을 확보하기 위하여 연구개발과정에서 표준기술을 적용하게 되는데, 이 과정에서 다양한 종류의 장애요인이 발생하게 되며, 활발한 표준화 활동을 통해 이를 극복하려고 한다. 연구개발과정에서 기업의 장애요인과 장애 극복전략 간의 연구는 다양하게 진행되어 왔으나 표준화 과정에서의 장애요인과 장애 극복전략에 관한 연구는 미흡한 상태이며, 표준화와 관련된 장애요인의 유형과 기업의 장애 극복활동에 대한 유형에 대해서도 부족한 상황이다. 이에 본 연구에서는 기업이 표준화 관련 장애요인의 유형을 도출하고, 이러한 장애요인들이 기업의 표준화 활동에 어떠한 영향을 미치는지에 대해 살펴보고자 하였다. 분석을 위해서 한국표준협회가 국내의 전기전자․정보통신 분야에 종사하는 기업을 대상으로 조사하였던 "국내표준실태조사"의 자료를 활용하였으며, 표준관련 장애사항과 필요성 그리고 표준화활동간 관계는 구조방정식 모형을 통하여 검증하였다. 분석결과에 의하면, 표준관련 장애사항은 표준화 활동에 일정한 영향을 미치고, 표준의 필요성에 의한 매개효과가 있는 것으로 조사됨에 따라 많은 기업들이 표준활동에 의한 장애사항이 발생하게 되면 이를 극복하기 위해 다양한 노력들을 수행하고 있다는 것을 알 수 있었다. 따라서 기업은 장애사항을 극복하기 위한 전략적 행동을 스스로 수행함으로써 표준화 활동은 활발해지고 표준관련 연구개발로 인해 발생하는 장애요인들은 감소되는 선순환 구조를 구축하게 될 것으로 판단된다. In order to ensure the interoperability of products and technologies, companies apply standard technology in R&D but encounter various obstacles in this process, which they try to overcome through active standardization activities. Various studies have investigated the obstacles and coping strategies of companies in the R&D process. However, studies on the obstacles and coping strategies in the standardization process are insufficient, and the types of obstacles related to standardization, so a variety of studies are also needed on the types of activities. In this study, we tried to determine the types of obstacles related to standardization and to examine how these obstacles affect the standardization activities of companies. The analysis used the data from the "National Standards Survey" which was conducted by the Korean Standards Association in Korea for companies engaged in the electrical, electronic, and information-related fields in Korea. The relationship between standard-related difficulties, needs and standardization activities was verified through structural equation modeling. The analysis results revealed that the standards-related disability issues have some influence on the standardization activities and the mediating effect by the necessity of the standard was investigated. We also found that many companies are making various efforts to overcome the barriers caused by standard activities. This suggests that a company can build a virtuous cycle structure by performing strategic actions to overcome obstacles by standardization activity and reducing the obstacles caused by standard-related research and development.

침출수에서 백색부후균에 의한 유기물질 제거

정명선 ( Myoung Sun Jeong ),김기은 ( Gi Eun Kim ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.5

Biological degradation of a leachate with microorganisms was studied. Microbial cells could grow up in leachate without adding other substates and extra cellular enzymes were produced. The concentration of ammonia and COD decreased. At the same time we suggest, other substances in leachate would be also degraded by microorganisms. As a starter the culture of white-rot fungi was inoculated in leachate. During 7 days 30% of COD, 82% of BOD and 67% of total ammonia were removed. The reaction velocity of COD and ammonia were 0.01~0.085/day and 0.082~0.179/day, respectively. The removal rate of COD was lowere than that of ammonia, but it means that this microbial degradation can be very useful to treat a leachate with higher ammonia content. In the reactor 18% of ammonia was stripped. The nitrate concentrate was under 1 mg/l and there is a suggestion that the most of ammonia was consumed by microbial cells, because of the low nitrification rate. The comparision of the removal rate between with enzyme addition and without showed that the microbial cultivation and enzyme production will stimulate to the removal of many substances.

Phanerochaete chrysosporium의 액체 배양 및 Lignin Peroxidase 생산

박세근(Park Se Keun),정명선(Jeong Myoung Sun),김영관(Kim Yeong Kwan) 강원대학교 산업기술연구소 2001 産業技術硏究 Vol.21 No.1

This study characterizes the growth of white rot fungi Phanerochaete chrysosporium IFO 31249 and lignin peroxidase(LiP) activity in different submerged culture media. P. chrysosporium was grown in the form of pellet of various sizes from a spore inoculum under shaking liquid culture condition. While the growth of mycelia was higher under the nitrogen-sufficient culture than under the nitrogen-limited culture, ligninase activity was relatively lower. The lignin peroxidase appeared in nitrogen-limited culture and was suppressed by excess nitrogen. High level(40U/l) of lignin peroxidase activity was obtained in the growth medium containing 1.5mM veratryl alcohol, a secondary metabolite of P. chrysosporium. Lignin peroxidase production was not observed under conditions of nitrogen sufficiency or in balanced media, suggesting that control parameters could increase the activity by manipulating the secondary metabolism.

비소를 함유한 중금속슬러지 고화체의 미세구조적 분석

김영관,정명선 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-

Microstructural analyses of synthetic arsenic-containing heavy metal sludges solidified with Portland cement were performed. Heavy metal sludges containing 0.04M of cadmium, chromium, copper, lead, and arsenic were prepared by sodium hydroxide precipitation and successive vacuum filtration. The sludges mixed with cement were cured for 14 days. The solidified sample was characterized by 1)leaching test, 2)scanning eletron microscopy kand 3) X-ray diffractometry. Of the metals tested, only Pb concentration in the leachate exceeded the Korean regulatory limit. The level of lead in the leachate was as high as 10 times the regulatory limit. X-ray analysis suggested that the metal hydroxides might be present in comnplex or impure crystalline phases.