• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.05a
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• pp.73-74
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• 2007

As the characteristics of national economy is getting more complicate, the value of exposition is regarded as of great importance day by day. The world's Products Exhibition in which our companies and organizations take part is held all abound world, we also held the international exposition and Products Exhibition. In foreign countries, there are a lot of special organizations relate with the exposition and Products Exhibition display, which play the role to coordinate and mediate the display. Display space of exhibition must achieve functional role that can accomplish communication with spectator as well as function as place that possess products of accumulative value. Therefore, we must establish effective communication exhibition plan by position and form of display space as well as property of Products Exhibition, display contents, exhibit program to achieve purpose of Products Exhibition. We will can grope contents and method for successful exhibit through Products Exhibition that is connected form and position of exhibit between exhibit space of such Products Exhibition and we may achieve purpose of Products Exhibition.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.45 no.3
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• pp.365-373
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• 1996

This paper presents the effects of rotor time constant variation and the on-line tuning algorithm of the rotor time constant. If the value of the rotor time constant is set incorrectly, the IFOC (Indirect Field Oriented Control)scheme exhibits deteriorated performance according to the wrong slip command. These variation effects of the rotor time constant are caused by the slip calculator where it is known that the rotor time constant play an important role in the aligned rotor flux. Using the two torque angles (stationary torque angle, rotating torque angle), the variation of the rotor time constant is identified, and the rotor time constant of the controller is tuned to the proper value of the machine. As the result, with the proposed algorithm, the dynamics of the deteriorated IFOC system, where the rotor time constant is varied, is improved. For the purpose of the validity of this proposed algorithm, the computer simulations and the experiments have been performed and the explanation of the results is presented. (author). refs., figs., tab.

• Bulletin of the Korean Mathematical Society
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• v.56 no.1
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• pp.111-130
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• 2019

The concepts of pseudocodeword and pseudoweight play a fundamental role in the finite-length analysis of LDPC codes. The pseudoredundancy of a binary linear code is defined as the minimum number of rows in a parity-check matrix such that the corresponding minimum pseudoweight equals its minimum Hamming distance. By using the value assignment of Chen and Kløve we present new results on the pseudocodeword redundancy of binary linear codes. In particular, we give several upper bounds on the pseudoredundancies of certain codes with repeated and added coordinates and of certain shortened subcodes. We also investigate several kinds of k-dimensional binary codes and compute their exact pseudocodeword redundancy.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.10a
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• pp.132-136
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• 2002

Optical collimating lenses are play a role as maintenance parallel light and as a kind of optical collimating lens, there is Ball lenses, GRIN-rod lenses, spherical lenses and aspherical lenses etc. but recently GRIN lens has monopolized a market. The performance of optical collimator depended on the coupling efficiency. In this paper, we were compared and analyzed to be measured values of coupling efficiency with respect to optical working distance using GRIN rod lenses and spherical lenses. In the case of GRIN lenses with a beam size of 420 ${\mu}{\textrm}{m}$, the minimum coupling efficiency was obtained to a measured value of 0.15 ㏈ and in the case of spherical lenses was obtained to a measured value of 0.12 ㏈ on the same condition. In results, we found that a performance of spherical lenses be better as compared with a that of GRIN lens.

• IE interfaces
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• v.14 no.4
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• pp.421-428
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• 2001

The economic effects of informatization are differently occurred according to industry types. Thus an evaluation methodology which reflects the industry type characteristics of informatization is needed. In this paper, we develop and analyze the indices for evaluating economic effects through informatization according to industry types, such as manufacturing, construction, financial services and marketing services. The factors related to performance of enterprise informatization can be defined as cost factors, effect factors, risk factors and influence factors. Effect factors are defined as quantitative or qualitative performance of informatization and classified into operational effect factors and strategic effect factors. The influence factor is defined as characteristics of informatization for industry types, that is, value chain of business and business products or services. Economic effect indices are classified according to the activity of business value chain. Economic effects indices of this research can be expected to play a role of general and standardized factors for economic evaluation of industry informatization.

• Journal of the Korea Furniture Society
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• v.27 no.2
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• pp.96-103
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• 2016

This article is to develop test product as adopting motifs from Andong Hahoe Village registered in the UNESCO World Heritage. This study associates physiographic features and images of Hahoe Village with test product. In the research result of this study, the value of product and possibility of success of test product was found as follows. Firstly, Making the puzzle-oriented Desk Service Hahoe Village views by using 22 different styles & functional artworks. Secondly, Producing the tangible forms such as a tree, thatched cottage, arbor, tile-roofed house and ferryboat by casting technique. Thirdly, Designing the shape of the terrain by utilizing computer programing softwares such as CAD drawings and ARTCAM. Finally, Developing the mass-produce goods reflecting region historical and cultural characteristics. I expect this study may increase of interest of our country's culture and play several roles of the bridgehead for product development. Also I reconsider sensitivity recovery of users and our cultural value increase.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.155-157
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• 2018

Over the last two decades, Vietnam's record on economic growth was remarkable, with a lot of potential to develop, Vietnam's GDP per capita growth has been among the best in the world. City logistics play a crucial role in Vietnam's economy, the more effective these services are the more competitive of the industry and trade of each country is. However, the logistics system in Vietnam is spontaneous and lacking professionalism. This paper aims to analyze Vietnam's economy overview and evaluate the development of logistics in three big cities of Northern Vietnam by using a set of criteria used in the TOPSIS method. .As a result of the analysis, the value of Ci* for storage and transportation is 0.91, which is the highest value in Hanoi.

• Journal of Welding and Joining
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• v.32 no.4
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• pp.75-79
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• 2014

This paper has an aim to study the effect of PWHT(for 140min. at $600^{\circ}C$) on FCAW weld metal properties (tensile, charpy impact and CTOD value) of YS 460 MPa steels for ship and offshore structures. On the basis of these study, it was found that strength was decreased and elongation was increased by PWHT. These phenomenon resulted from the reduction of acicula ferrite volume fraction by grain growth. Also, Charpy impact and CTOD value were decreased by PWHT. These phenomenon resulted from grain growth. Because the grain boundary grown by PWHT can play a role as crack initiation site and make the crack propagate more easily. Although weld metal properties were decreased by PWHT, tensile and impact properties could meet the class societies requirements for welds of YS 460 MPa steel, but decrease of fracture toughness need to be consider seriously.

• Journal of Korean Society of Rural Planning
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• v.10 no.1 s.22
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• pp.35-40
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• 2004

The expansion of demand associated with leisure, which has resulted from the elevated standard of living, has made the domestic tourist demand diversified. Recently, people, especially urban population, show the higher interest and need for environmentally friendly rural tourism. This study aims to grasp the utilization of recreation roles of tourist farms and then to evaluate the economic value for recreation roles of tourist farm using Traveling Cost Method. Data were collected from a survey in 2003. The results show that its value is 62,037 won per head annually and so the tourist farms play their role of connecting the urban population with rural amenity.

• STI Policy Review
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• v.4 no.2
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• pp.136-158
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• 2013

This study identifies the structural determinants of the social acceptance of genetically modified (GM) foods across European countries. Toward this end, we suggest an integrated theoretical model to explain the social acceptance of GM foods by including both perception factors (perceived benefit, perceived risk, feelings, trust, and knowledge) and value factors (ethical concerns, science optimism, religiosity, and ideology). This model is then tested by analyzing survey data collected from 18,634 Europeans in 32 countries. The results indicate that first, not only perception factors but also value factors significantly contribute to explaining the acceptance of GM foods. Second, perceived benefits, perceived risk, feelings, and ethical concerns tend to be the four biggest determinants for acceptance. Third, this two-factor model could be generalized even with variation across countries. Finally, ethical concerns and scientific optimism play a moderating role between predictors and outcomes in the acceptance of GM foods.