• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.4
• /
• pp.734-742
• /
• 2016

Global warming and the depletion of fossil fuels have been caused by decades of reckless development. Wind energy is one form of renewable energy and is considered a future energy source. The wind tower is designed with a fundamental frequency in the soft-stiff design between the 1P and 3P range to avoid resonance. Usually, to perform natural frequency analysis of a wind tower, the boundary condition is set to the Fixed-End, and soil-pile interaction is not considered. In this study, consideration of the effect of soil-pile interaction on the wind tower was included and the difference in the natural frequency was studied. The fixed boundary condition was not affected by the soil condition and depth of the pile and the coupled spring boundary condition was unaffected by the depth of pile but affected by the depth of the pile, and the Winkler spring boundary condition is affected by both the soil condition and the depth of the pile. Therefore, the coupled spring boundary condition should be used in shallow depth soil conditions because the soil condition does not take the shallow depth soil into consideration.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.8
• /
• pp.594-603
• /
• 2019

This purpose of this study is for an Airline company to discover and utilize new knowledge because knowledge and information are considered core tools for achieving high performance and competitive advantage, and achieving high performance and competitive advantage will surely determine the long-term survival of airline companies. Therefore, this study aims to reveal the causal relationships among different types of organizational culture, the knowledge sharing activities and the effectiveness of organizational work by airline members from a holistic viewpoint. The results of analysis are as follows. First, when examining the effects of the organizational culture types of airline members on knowledge sharing, a creative innovation culture, a relational group culture and a hierarchical orientation culture all showed positive effects on knowledge sharing. Second, the knowledge sharing by airline members showed a significant positive effect on the effectiveness of organizational work. Third, the creative innovation culture, the relational group culture and the hierarchical orientation culture all showed positive effects on the effectiveness of organizational work. Fourth, knowledge sharing did not have a mediating effect on the relationship between organizational culture and the effectiveness of organizational work.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.2
• /
• pp.91-98
• /
• 2023

Genre paintings, which describes the lives of ordinary people, has lifestyle and Pungnyu of our ancestors. Pungnyu is aesthetic consciousness and a way of lives. The culture of Pungnyu is a kind of art boundary that combines high spirits and art. The Pungnyu is an icon of Korean culture, realization of taste, and happens through "stroll", which means the walking peacefully, and "sightsee", which means go sightseeing. It shows through the rambling and the excursion. Hyewon's 'Jeonsincheob'('傳神帖', a kind of spirit transferred drawings book) is a genre painting which represents Pungnyu and shows various activities at that time. Therefore, we can understand our own spirit and soul through appreciating his paintings. Hyewon's 「Jeonsincheob」 has three special features. Firstly, it is the symbol of Korea traditional Pungnyu. Secondly, it contributes to development of the East art. Lastly, Hyewon's 「Jeonsincheob」 can be considered in terms of glocalism, which means the combination of globalization and localization and can be explained by the relation of the center=the periphery, the globalization=the Korean wave, the universality=the particularity. Hyewon's 'Jeonsincheob' has aesthetic boundaries. One aims at individual pleasure. Another aims at harmony with its natural environment in which you are. Also, it can be considered as the boundaries of enjoying together which aims at harmony with social environment among group members.

• Korean Journal of Plant Tissue Culture
• /
• v.28 no.5
• /
• pp.289-296
• /
• 2001

The main objective of this topic is to establish strategies and to plan biotechnology researches which are related to the agricultural improvements especially focusing on the crop breeding in Korea. From 1960's to 1980's government policy had been emphasized to develope high yielding cultivars for the self sufficient supply of the staple food crops. As a result, considerable increase of rice production has been made with accumulating technology and man's powers. Recently genetically modified crops harboring useful characteristics have been developed using biotechnology and released in the developed countries. National research institutes and private companies have been developed biotechnology researches to establish competitive capabilities, however they have not been successfully used in commercialization. Therefore it is necessary to promote the practical. application by connecting molecular technology with conventional breeding. Proposed research projects are; (1) basic researches including plant genome studies, (2) developing new cultivars through gene transformation, (3) screening and producing antioxidants, secondary metabolite substances and edible vaccines. To set a government policy, both domestic and international research trends were reviewed and possibility of success based on the economic view point were discussed. The intellectual property and preservation of environment play a key role to decide the research priority. It is also necessary for us to make one step system for the distribution of research resources such as microorganisms, genes cloned, plant seeds and research informations for promoting research activities.

• Journal of Korea Port Economic Association
• /
• v.27 no.1
• /
• pp.281-304
• /
• 2011

In the energy-climate era, pollution emissions from port activities have a significant issue in international shipping and port community. Thus international organization such as IMO and developed countries are seeking to develop various reduction strategies against air pollution. However Korea has recently conducted several studies concerning air pollution in port industry. The main purpose of the paper is to suggest emission reduction strategies for bulk terminal in Port of Incheon, which handles large amount bulk cargoes as a gateway for the metropolitan area. For this aim, the clean air strategies of the world major ports were considered and air pollution reduction strategies were suggested. The main findings of this paper are as follows. First, the emission reduction strategies for container terminal are should be integrated based on technologies changes, operational changes and market-based measures. Second, the emission reduction strategies for bulk terminal can be effective when use innovative measures during loading, unloading and storage process such as telescopic cascade trimming chute, snake sandwich equipment, dry fog system and dome structure. Finally, investigation on actual conditions of air pollution in Korean ports and development of environmental evaluation scheme for persisting monitoring should be conducted.

• Archives of design research
• /
• v.11 no.2
• /
• pp.203-213
• /
• 1998

The forthcoming twenty-first century is at the mercy of information and culture. A quality of humanlife is under the control of a cultural level. A nation's creative culture and a cultural level represent all things about the nation; and a national image, as a whole result of culture, is enormously influential. This new era of culturalism gives us a significant responsibility for getting ready for the late industrial society by practically harmonizing rationality of modem culture with conception of traditional culture. Industrializing culture and culturalizing industry will be the most important strategy for existence in these days of borderless international competitiveness. Cultural products which is containing a nation's own culture can not only enhance the national image, but also become high value-added industry. While general products are developed for the purpose of convenient and practical use, cultural products are created with the intention of informing international society about a nation or a region. In order to confront with a global market system and a change of cultural environment, it is necessary to create a proper design with cultural inheritance for modem likes and senses, to produce the design on a commercial scale, and to strengthen its competitiveness on international markets. In order that a commodity is born, distributed throughout markets, and delivered to a final consumer, it is essential to understand complicated process such as development, distribution and marketing of products and to systematize each part. Although we should not neglect any part, a political and systemical plan or a distributional and marketing idea will be beside the point in this article. This article presents importance of traditional patterns as a Korean cultural image, and it shows the process of designing and developing products in order for traditional patterns to be utilized for products effectively. I expect that concrete activation and systematization for those works can be carried out successively.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2010.06a
• /
• pp.306-306
• /
• 2010

21 세기는 언제, 어디에서, 누구나가 정보를 자유롭게 염가에 이용할 수 있는 유비쿼터스 정보사회가 될 것으로 예상하고 있다. 이러한 유비쿼터스 사회가 실현되기 위해서는 필연적으로 대두되고 있는 과제가 에너지 공급원의 문제이다. 휴대용 전자제품이나 소형 에너지 공급원으로 지금까지 주로 전지가 사용되어 왔지만 이것들은 교환 및 충전이 불가피하다. 이러한 불편함을 개선하기위해 교환과 충전이 불필요하거나 아주 장시간동안 공급해주는 형태의 에너지 공급원의 필요성이 대두되고 있다. 이러한 에너지 공급원으로 최근에 많은 연구가 되고 있는 것이 주위의 환경으로부터 버려지는 에너지를 수확(harvesting)하여 전력으로 변환하는 에너지 하베스팅 (energy harvesting)기술이 연구 개발되고 있다. 에너지 하베스팅 응용을 위해서 사용되어지는 압전 세라믹스는 전압출력계수 ($g_{33}$)가 커야하는데 이것은 압전상수 ($d_{33}$)와 유전상수 (${\varepsilon}_{\tau}$)의 값에 영향을 받는 것으로 알려져있다. 그 중에서 우수한 전기적 특성 때문에 PZT를 기반으로 하는 압전 세라믹스가 사용되어져왔다. 그러나 Pb의 높은 유독성과 Pb를 포함하는 제품들의 처분문제들로 인해 제조에 관한 많은 문제점들을 지니고있다. 그리하여, Pb를 포함하지 않는 Pb-free계에 관한 연구가 전세계적으로 활발히 진행되고 있다. 다양한 Pb-free계 후보자들 가운데 $K_{0.5}Na_{0.5}NbO_3$ (KNN)는 높은 큐리온도와 좋은 강유전 특성 및 압전특성 때문에 PZT를 대체할 가장 장래성있는 대안들 중의 하나로 고려되고 있다. 그러나 고온에서 알칼라인 원소들의 높은 휘발성 때문에 보통의 소결공정으로는 소결이 잘되고 치밀한 세라믹스를 얻기가 어렵다. 많은 연구에서 KNN 세라믹스의 소결성을 개선하기 위하여 강유전 또는 반강유전체인 $SrTiP_3$와 $LiTaO_3$를 고용체 형성에 포함시키고 또한 $K_4CuNb_8O_{23}$, $MnO_2$, CuO등과 같은 소결조제를 첨가하여 압전 특성과 소결성을 개선시켰다. 따라서 본 연구에서는 비화학양론적 (1-X)[$[(K_{0.5}Na_{0.5}]_{0.97}(Nb_{0.96}Sb_{0.04})O_3]$ + 0.008CuO + 0.2wt% $Ag_2O$ + X $CeMnO_3$의 조성을 사용하여 A사이트와 B 사이트에 각각 Ce이온과 Mn 이온의 치환량을 변화하여 그에 따른 유전 및 압전특성을 조사하였다.

• Journal of Korean Association for Spatial Structures
• /
• v.4 no.2 s.12
• /
• pp.63-71
• /
• 2004

The structural space is gradually wide and is wanting agreeable environment by the requirement and necessity of people who lives modem stage. The building coincides with such requirements and is the high rise building actual circumstances which is doing ultra-large. The confirmed report of the technology to organize great merit is becoming currently considerably important issue in constructing a building field. Thus, this paper examine closely for nonlinear unstable taking a picture uneasiness height of prosperity considering to initial imperfection by a numerical method with a space frame structure of discrete system in large space structure. Based on previous investigation method, this paper induce nodal stiffness matrix of solid truss elements considering geometrical nonlinear using finite element method. In this paper, three types of space structure considered; i) 1-free node space structure, ii) 2-free node space structure, iii) multi-free node space structure. It apply the above examples to a nonlinear program, next, grasp the characteristic of an unstable conduct and the result was a clearing low.

• Journal of the Korean Institute of Traditional Landscape Architecture
• /
• v.32 no.3
• /
• pp.21-31
• /
• 2014

This study aims to comparison of spatial composition that Okhojeong garden and Seokpajeong garden. Construct background and space structure in both of Okhojeong garden and Seokpajeong garden is analyzed. The results were as follows. First, Okhojeong garden and Seokpajeong garden of the nobles gardens in late Joseon dynasty. They had the advanced techniques of contemporary based on their political power and wealth, and therefore could built garden and enjoy the garden culture of the upper layer. Furthermore, composition of the Okhojeong garden can be assumed that it is related to construction of the Seokpajeong garden through analysis of the relationship between builders. Secondly, Space structure of Okhojeong garden and Seokpajeong garden is divided into pavilion unit of small gardens with living space as the center. Construction pavilion in each garden space imbues certain landscape theme. In addition, authorization of characteristics of a place in each area is attempted through boundary establishment and selective garden culture of varied seasonal landscape. Thirdly, In Seokpajeong garden, most of construction characteristics of Okhojeong garden are appeared. This indicates that Seokpajeong garden was affected by space-configuration-technique of Okhojeong garden such as acceptation or modification recreation. Fourth, In many cases, fanciers regarding floriculture are expanded to enthusiasts in late Joseon dynasty. In Okhojeong garden and Seokpajeong garden, herbaceous ornamental is considered to be precious and garden materials such as water tray, stone couch, oddly shaped stone, potted plant, artificial hill, wisteria trellis are diversified at the time.

• Journal of the Korean Society for Library and Information Science
• /
• v.37 no.4
• /
• pp.5-21
• /
• 2003

This thesis concerns urban construction archive management business of China in the 20th century 12 items of state level construction archives, 11 categories of urban construction archives was initially studied. And studies on data collection method, obligations and range of service, etc. of urban construction archives center were conducted as well. Urban construction archive management business was aggressively pursued in terms of national policy, based on the state plan to construct medium-sized and large cities and Mao ZeDong(毛澤東)‘s direction regarding of urban construction archives. As a result, there happened to be various levels and types of 3,186 archive centers, as of 2003. And the archives centers of urban construction have been estavlished in 662 cities all over China so far, while the establishment of the urban construction archives centers was pursued only in 42 cities in 1960s. Another point to note is that staff members of junior college or higher educational background account for 70% - 80% of overall human resources of the archives center of urban construction, while 60 - 70% of them are technical level. This makes professional human resources represent at least 60% of the total human resources of the centers. This is a result of effort of China to enhance urban construction archive management business on both quantitative and qualitative level. And through the study on the situation of urban construction archive management business in Beijing(北京), it was learned that urban construction archives are being collected and managed in archives centers of the respective areas as well as in professional archives centers of urban construction. Some suggestions were also made regarding what kind of direction Korea should take to pursue the business of urban construction archive management.