• 한국산학기술학회논문지
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• 제20권8호
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• pp.594-603
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• 2019

대형항공사(Network Carrier)와 저원가항공사(Low Cost Carrier)의 양분화된 영업환경에서 승객의 서비스에 대한 다양한 요구와 항공사의 수입보존을 위해 대 내외적으로 무한 경쟁에 직면하고 있다. 이러한 환경 속에서 기업의 성과를 위해 21세기 지식정보화 사회를 맞이하여 기업들의 새로운 지식을 창출하고 활용하기 위한 노력은 기업의 장기적 생존을 결정하는 핵심적인 경쟁우위 도구로 간주되어 왔다. 따라서 본 연구에서는 항공사 구성원의 조직문화유형, 지식공유 활동, 조직업무 효과성 사이의 총체적인 관점에서 어떠한 인과관계를 밝히고자 한다. 본 연구의 대상은 K와 A항공사에 사전협조를 구하여 종사자를 대상으로 자료 수집을 실시하였다. 연구 대상자는 K와 A항공사에 재직 중인 종사자를 대상으로 2019년 5월 1일부터 2019년 5월 17일까지 실시한 설문조사 450명의 자료를 분석에 사용하였다. 자료 분석을 위해 SPSS Statistics 22.0과 AMOS 22.0 통계프로그램을 사용하였으며, 분석결과는 다음과 같다. 첫째, 항공사 구성원의 조직문화 유형이 지식공유에 미치는 영향을 살펴보면, 창의혁신문화, 관계집단문화, 위계지향문화 모두 지식공유에 유의한 정의 영향을 미치는 것으로 나타났다. 둘째, 항공사 구성원의 지식공유는 조직업무 효과성에 유의한 정의 영향을 미치는 것으로 나타났다. 셋째, 조직문화 중, 창의혁신문화, 관계집단문화, 위계지향문화 모두 조직업무 효과성에 유의한 정의 영향을 미치는 것으로 나타났다. 넷째, 조직문화와 조직업무 효과성의 관계에서 지식공유는 매개효과가 있는 것으로 나타났다. 본 연구의 결과를 통해 향후 항공업계의 조직업무효과성 향상을 위해서는 지식공유의 역할을 제시하고, 지식공유를 위한 조직문화 형성의 틀 마련의 중요성을 제공해 주었다.

• ALGAE
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• 제37권2호
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• pp.149-161
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• 2022

Noctiluca scintillans is a heterotrophic dinoflagellate that causes red-colored oceans during the day (red tides) and glowing oceans at night (bioluminescence). This species feeds on diverse prey, including phytoplankton, heterotrophic protists, and eggs of metazoans. Thus, many scientists have conducted studies on the ecophysiology of this species. It is easy to cultivate N. scintillans at a scale of <1 L, but it is difficult to cultivate them at a scale of >100 L because N. scintillans cells usually stay near the surface, while prey cells stay below the surface in large water tanks. To obtain mass-cultured N. scintillans cells, we developed an automatic system for cultivating N. scintillans on a scale of 100 L. The system consisted of four tanks containing fresh nutrients, the chlorophyte Dunaliella salina as prey, N. scintillans for growth, and N. scintillans for storage, respectively. The light intensities supporting the high growth rates of D. salina and N. scintillans were 300 and 20 µmol photons m^-2 s^-1, respectively. Twenty liters of D. salina culture from the prey culture tank were transferred to the predator culture tank, and subsequently 20 L of nutrients from the nutrient tank were transferred to the prey culture tank every 2 d. When the volume of N. scintillans in the predator culture tank reached 90 L 6 d later, 70 L of the culture were transferred to the predator storage tank. To prevent N. scintillans cells from being separated from D. salina cells in the predator culture tank, the culture was mixed using an air pump, a sparger, and a stirrer. The highest abundance of N. scintillans in the predator culture tank was 45 cells mL^-1, which was more than twice the highest abundance when this dinoflagellate was cultivated manually. This automatic system supplies 100 L of N. scintillans pure culture with a high density every 10 d for diverse experiments on N. scintillans.

• 대한인간공학회지
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• 제35권4호
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• pp.263-275
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• 2016

Objective: This paper introduces the regulatory oversight approaches and issues to consider in the course of safety culture oversight model development in the nuclear field. Common understanding on regulatory oversight and present practices of international communities are briefly reviewed. The nuclear safety culture oversight model of Korea is explained focusing on the development of safety culture definition and components, and their basic meanings. Oversight components are identified to represent the multiple human and organizational elements which can affect and reinforce elements of defense in depth system for nuclear safety. Result of validation study on safety culture components is briefly introduced too. Finally, the results of the application of the model are presented to show its effectiveness and feasibility. Background: The oversight of nuclear licensee's safety culture has been an important regulatory issue in the international community of nuclear safety regulation. Concurrent with the significant events that started to occur in the early 2000s and that had implications about safety culture of the operating organizations, it has been natural for regulators to pay attention to appropriate methods and even philosophy for intervening the licensee's safety culture. Although safety culture has been emphasized for last 30 years as a prerequisite to ensure high level of nuclear safety, it has not been of regulatory scope and has a unique dilemma between external oversight and the voluntary nature of culture. Safety culture oversight is a new regulatory challenge that needs to be approached taking into consideration of the uncontrollable aspects of cultural changes and the impacts on licensee's safety culture. Although researchers and industrial practitioners still struggle with measuring, evaluating, managing and changing safety culture, it was recognized that efforts to observe and influence licensees' safety culture should not be delayed. Method: Safety culture components which regulatory oversight will have to focus on are developed by benchmarking the concept of physical barriers and introducing the defense in depth philosophy into organizational system. Therefore, this paper begins with review of international regulatory oversight approaches and issues associated with the regulatory oversight of safety culture, followed by the development of oversight model. The validity of the model was verified by statistical analysis with the survey result obtained from survey administration to NPP employees in Korea. The developed safety culture oversight model and components were used in the "safety culture inspection" activities of the Korean regulatory body. Results: The developed safety culture model was confirmed to be valid in terms of content, construct and criterion validity. And the actual applicability in the nuclear operating organization was verified after series of pilot "safety culture inspection" activities. Conclusion: The application of the nuclear safety culture oversight model to operating organization of NPPs showed promising results for regulatory tools required for the organizations to improve their safety culture. Application: The developed oversight model and components might be used in the inspection activities and regulatory oversight of NPP operating organization's safety culture.

• 한국안전학회지
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• 제32권6호
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• pp.125-130
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• 2017

The government operates autonomous safety management activities in the regulated safety management in order to prevent industrial accidents. On the other side, companies are promoting safety management in the workplace, such as improving the safety level of the safety system, but the major reason for the accidents is safety ignorance in the event of big accidents. This study aims to improve the safety culture level by analyzing the difference in safety culture among six workplace sites in the manufacture of food products and drawing the improvement point. The main result is as follows. In order to enhance the safety level of the safety system, it is necessary to minimize the number of systems to be implemented, and to strengthen the small safety management activities that workers participate directly in the workforce, and the incentive policy for the promotion of the safety management activities should be coordinated by each group. Due to the high proportion of female workers, the proportion of female workers should be encouraged to actively participate in the safety of women, thereby improving safety culture levels and improving safety awareness through customized safety education. By learning work procedures through theory and practice, the level of safety culture should be increased. Employees voluntary safety participation activities should increase the level of mutual safety culture. Depending on spontaneous safety participation activities, one should promote safety culture enhancement activities by enhancing the safety level of the safety culture and enhance safety culture through safety awareness, and promote safety culture and procedures for improving safety culture.

• 복식
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• 제54권4호
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• pp.1-14
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• 2004

This study suggests the popular culture theory as a basic framework to find out the characteristics of contemporary fashion show meeting the popular culture, and describes that the show is the popular culture of this generation. The culture is the way of our life unifying the world at common area of human being. The popular culture is to subdivide it into the public culture that shares aesthetic taste, and to borrow each other and develop it mutually because of the collapse of dichotomous boundary with high quality culture, and to represent the people’s thought and behaviour expanding their areas. The author has examined the characteristics of popular culture of modern fashion show by four collections, that is, commercialism, mass media, political relationship and interaction, etc： Firstly, at the commercialism, the fashion show combines it with other genre organically to do mass production and sales and produces cultural consumption goods supplying a lot of sight-seeing. Secondly, at the mass media, the image of contemporary fashion show has been spread out with mass media such as fashion magazines, cable TV and Internet beyond time and space to produce advertisement effects and makes new fashion and bring democratic culture. Thirdly, at political relationship, the fashion in its peak can make a big stream of wealth, so that it plays important roles under governmental regulations in this era and governments make efforts to support and develop it. Lastly, at interaction, the fashion show shares media functions to let users participate in the program and to exchange information as a feedback to influence each other.

• Journal of Biosystems Engineering
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• 제32권2호
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• pp.109-114
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• 2007

In mass production of seed-potato plantlets, the processes for in vitro propagation and ex vitro acclimatization with a high cost should be improved by a culture system with environmental control using scaled-up culture vessels. The experiment was conducted to design a hydroponic culture system for enhancement of growth and development of seed-potato (Solanum tuberosum) plantlets cultured under photoautotrophic (without sugar in culture medium) conditions with controlled light intensity and ventilation rate. The culture system was consisted of scaled-up culture vessels, ventilation pipes, a multi-cell tray and an environmental control system (ECS) for optimum controlling in temperature, light intensity, ventilation rate, and culture-medium supply. Growth and development of the plantlets was significantly increased under the ECS compared with a conventional culture system (CCS) of photomixotrophic culture (with sugar in culture medium) using small scale vessels. For 21 days, leaf area of the plantlets was expanded more than 2 times, and number of internodes also approximately 4 times greate. under the ECS. In addition, the photoautotrophic growth in sweetpotato (Ipomoea batatas) and chrysanthemum (Chrysanthemum morifolium) plantlets was greater more than 2 times compared with the CCS.

• 문화기술의 융합
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• 제7권4호
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• pp.281-289
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• 2021

청소년기는 자아정체성이 확립되지 않아 스트레스를 이겨내는 능력인 자아탄력성이 중요한 시기이다. 문화예술교육은 청소년의 자아탄력성에 다양한 영향을 주고 있어 학교문화예술교육과 사회문화예술교육에서 청소년들의 상황에 적절한 교수학습 방법을 활용하고 있다. 문화예술교육 효과의 자신 이해는 청소년 자아탄력성의 감정통제, 활력성, 대인관계, 낙관성, 호기심에 모두 유의한 영향을 주고 있는 반면에 문화예술교육 효과 중 정서적 안정은 청소년 자아탄력성의 모든 요인에 유의한 영향을 미치지 못한 것으로 분석되었다. 따라서 청소년의 자신에 대한 이해와 자기 계발을 위하여 더욱 실질적인 프로그램으로 진로 탐색 기회 등을 제공하는 방안을 마련하여야 한다. 그리고 문화예술교육은 청소년들의 개인적 성향을 타인과 좋은 유대관계를 유지하고 높은 자신감을 가지며 안정되고 성숙한 생활의 넓은 영역에서 역할 수행할 수 있는 융합적 연구가 이루어져야 할 것이다.

• Biotechnology and Bioprocess Engineering:BBE
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• 제7권5호
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• pp.275-280
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• 2002

In order to control glucose concentration during fed-batch culture for antibiotic production, we applied so called “software sensor” which estimates unmeasured variable of interest from measured process variables using software. All data for analysis were collected from industrial scale cultures in a pharmaceutical company. First, we constructed an estimation model for glucose feed rate to keep glucose concentration at target value. In actual fed-batch culture, glucose concentration was kept at relatively high and measured once a day, and the glucose feed rate until the next measurement time was determined by an expert worker based on the actual consumption rate. Fuzzy neural network (FNN) was applied to construct the estimation model. From the simulation results using this model, the average error for glucose concentration was 0.88 g/L. The FNN model was also applied for a special culture to keep glucose concentration at low level. Selecting the optimal input variables, it was possible to simulate the culture with a low glucose concentration from the data sets of relatively high glucose concentration. Next, a simulation model to estimate time course of glucose concentration during one day was constructed using the on-line measurable process variables, since glucose concentration was only measured off-line once a day. Here, the recursive fuzzy neural network (RFNN) was applied for the simulation model. As the result of the simulation, average error of RFNN model was 0.91 g/L and this model was found to be useful to supervise the fed-batch culture.

• 한국실내디자인학회논문집
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• 제26권4호
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• pp.75-83
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• 2017

The cultural tendency based on sharing and cooperation, which has recently been a hot issue, accelerates throughout the world. This study began with a perception that a sharing culture is inherent in urban public spaces. This study aims to conduct a theoretical study of the sharing culture and to analyze the characteristics of the design composition of public spaces. This study selected squares in 16 European cities as cases for analysis. The results are summarized as follows:1)To analyze the design characteristics of public spaces in which a sharing culture is inherent, this study drew the shape and type of planes and sharing elements such as accessibility, symbolism and activity with the squares in the cases. 2)The shape of planes in the squares in the cases has been formed in close relations with the historic meaning and events of the area and the process of the construction of buildings surrounding the square. The squares in the cases were classified into seven plane types, and these squares have developmentally contributed to the formation of a sharing culture as a place for free participation and communication concerning social issues. 3)In the squares in the cases, the weight of road-centered access appears high, and in terms of the construction of human-friendly / environment-friendly infrastructure in the city or judging from the trend of the recent increase of pedestrian-centered plans for public space, it is judged that approaches with a high utilization rate of sidewalk or public transportation would be desirable. 4)Symbolic elements of the square become a device by which citizens can share the historic symbolism, along with artistic inspiration. In addition, by serving as an observatory from which people can take a view of the landscape of the city, it allows visual sharing of the entire city as well as the square. 5)A square is common pool resources in the community, and it is necessary to vitalize that in a direction of increasing the possibility of sharing, through the characteristics and methods of the composition of public design.

• Biotechnology and Bioprocess Engineering:BBE
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• 제10권6호
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• pp.522-527
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• 2005

Various processes which produce L-lactic acid using ammonia-tolerant mutant strain, Rhizopus sp. MK-96-1196, in a 3L airlift bioreactor were evaluated. When the fed-batch culture was carried out by keeping the glucose concentration at 30g/L, more than 140 g/L of L-lactic acid was produced with a product yield of 83%. In the case of the batch culture with 200g/L of initial glucose concentration, 121g/L of L-lactic acid was obtained but the low product yield based on the amount of glucose consumed. In the case of a continuous culture, 1.5g/L/h of the volumetric productivity with a product yield of 71% was achieved at dilution rate of $0.024\;h^{-1}$. Basis on these results three processes were evaluated by simple variable cost estimation including carbon source, steam, and waste treatment costs. The total variable costs of the fed-batch and continuous cultures were 88% and 140%, respectively, compared to that of batch culture. The fed-batch culture with high L-lactic acid concentration and high product yield decreased variable costs, and was the best-suited for the industrial production of L-lactic acid.