• 동력기계공학회지
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• 제12권5호
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• pp.14-19
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• 2008

In order to meet stringent future emission regulations, especially to reduce Particulate Matter (PM) and NOX, stoichiometric diesel combustion technology with a piezo group-hole nozzle injector is being researched for reduction harmful emissions. A new nozzle layout, namely a group-hole nozzle, which has one group of small orifices with a wide spray included angle was investigated to improve the efficiency of stoichiometric diesel combustion. From this point of view, the group-hole nozzle suggested by Dense Co. is an attractive candidate method applicable to stoichiometric diesel combustion. The group-hole nozzle concept is to reduce the injector nozzle hole diameters without sacrificing spray penetration by closely locating two holes. Experimental studies have proven that the spray from group-hole nozzles have similar spray penetration to that of a single hole with equivalent overall nozzle hole area, but the spray drop sizes (SMD) are reduced, aiding vaporization and mixing.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 추계학술대회논문집 I
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• pp.133-138
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• 2001

Traffic noise is a significant national problem in many communities. Construction of noise barriers has been the most often used mechanism to mitigate vehicle noise for residents next to high density roadways. The most common materials for constructing noise barriers are metal. The character of the wall can be significantly modified by the type of surface treatment used on the wall body. Noise barrier walls can be softened through the use of plants. Greening Noise Barrier helps blend the roadway into the surrounding landscape and provides an interesting and aesthetic view of the road.

• 한국건축시공학회지
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• 제4권2호
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• pp.119-128
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• 2004

Lately construction industry tends to prefer remodeling of existing buildings rather than new construction or reconstruction of buildings due to strengthening of several restriction related to real estates along with prolonged depression. And also, remodeling of building costs less and creates less wastes compared to reconstruction and so it is more profitable in financial and environmental view. However remodeling is process of creating new environment with existing building. Therefor remodeling must follow the procedure realizing problem and fix the problem based on through investigation on existing building and users requirement must be faithfully reflected. Specially in case of apartment houses, since vagueness on ownership and management authority on common parts exists. Hereupon, in this study we are to present the procedure of analyzing apartment house remodeling method through user requirement by approaching to several considerable factors in user request side.

• 복식
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• 제47권
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• pp.5-18
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• 1999

This study focus on the history of Scottish kilt and the application of kilt designed by Vivienne Westwood 1993 F/W. Up to late the 16 Century saffron shirt was worn among Highland men and belted plaid become common dress after the 17 Century. The early the 18 Century belted plaid have developed as a kilt separated to a upper and a lower skirt style. However Government banned wearing tartan and kilt after Culloden battle (1745) as highland Dress(tartan, kilt, belted plaid etc) was the symbol of rebellion. This legislation by Hanoverian authority continued for 35 years. Although most of tartan was disappeared during those period it has become popular among European upper class after george IV's visiting Scotlan in 1822. Highland Dress become Scottish national dress after Industrial revolution. Currently Vivienne Westwood's 93 F/W using tartan and kilt and its accessaries those items were successfully transformed modern ladies dress.

• Journal of Advanced Marine Engineering and Technology
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• 제20권2호
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• pp.125-125
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• 1996

In order to reject the steady-state tracking error, it is common to introduce integral compensators in servosystems for constant reference signals. However, the mathematical model of the plant is exact and no disturbance input exists, the integral compensation is not necessary. From this point of view, a two-degree-of-freedom(2DOF) servosystem has been proposed, in which the integral compensation is effective only when there is a modeling error or a disturbance input. The present paper considers robust stability of this 2DOF servosystem to the unstructured uncertainty of the controlled plant. A robust stability condition is obtained using Riccati inequality, which is independent of the gain of the integral compensator. An example is presented, which demonstrates that the tracking response of the 2DOF servosystem with uncertainty becomes faster when the integral gain made larger under the robust stability condition.

• Journal of Advanced Marine Engineering and Technology
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• 제20권2호
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• pp.57-62
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• 1996

In order to reject the steady-state tracking error, it is common to introduce integral compensators in servosystems for constant reference signals. However, the mathematical model of the plant is exact and no disturbance input exists, the integral compensation is not necessary. From this point of view, a two-degree-of-freedom(2DOF) servosystem has been proposed, in which the integral compensation is effective only when there is a modeling error or a disturbance input. The present paper considers robust stability of this 2DOF servosystem to the unstructured uncertainty of the controlled plant. A robust stability condition is obtained using Riccati inequality, which is independent of the gain of the integral compensator. An example is presented, which demonstrates that the tracking response of the 2DOF servosystem with uncertainty becomes faster when the integral gain made larger under the robust stability condition.

• 한국군사과학기술학회지
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• 제21권3호
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• pp.386-395
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• 2018

Quality management is essential to achieve the desired quality throughout a program. Especially in phase of research and development(R&D) of a program, that is an effective and efficient way to achieve the quality goals and improve the quality of a program in total life cycles. For applying the quality management to a R&D program, characteristics of the program should be considered in various aspects. In this study, the characteristics of developments of defense weapon systems were analyzed and the meaning of quality in that field was defined. And then, application methods of the quality management were established and the quality management model with four view points(external, organization, programs, practices) was proposed. In addition, detailed tasks of the quality management activities were described and some examples of applying the model were introduced.

• 한국한의학연구원논문집
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• 제13권3호
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• pp.29-37
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• 2007

Narratives are the old stories handed down for a long time, which are not personal creations but common ones for ages. They were formed from the public consciousness, passed orally and recorded in letters. There have been lots of studies on narratives about characters, whereas there have been poor in the studies on the great doctors. The author examined the narratives about great doctors in literature for successive generations, and made researches on world view and consciousness of reality reflected on the age directly or indirectly. The author inquired into the descriptions and constructions of the narratives separately, and classified the great doctors in literature into the miraculous doctors, eccentric doctors and righteous doctors. Therefore truly great doctor is the one who treats not only personal diseases but also social problems, and who tries to harmonize with human beings and nature.

• 품질경영학회지
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• 제37권2호
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• pp.58-67
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• 2009

Customer Satisfaction Management(CSM) is becoming more common and the importance of measuring the CS Index(CSI) is getting higher and higher. Furthermore, the existing CSI have many problems in view of the link between enterprise result and those indecision, which could not explain the links clearly. Therefore, NPS(Net Promoter Score) index have been developed by Fred Reichheld and the NPS shows up rapidly and attract attention. In this paper, we provide conceptual frameworks on the links among the latent variables(total CSI, elementary CS and the referral) and propose more effective and practical index between CSI and the "would recommend" index through testing the Structural Equation Model(SEM) on "CSI${\leftrightarrow}$would recommend${\leftrightarrow}$referral".

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2009년도 추계학술대회
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• pp.80-88
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• 2009

As well as the development of the measurement of service quality, various kinds of service measurements are also being developed. Especially the mobile telecommunication service being representative to the mobile telecommunication company would be the mostly developed area. Its development can be understood along with the development of the telecommunication companies as well as cellular companies, not only the service alone. It is a differentiated phenomenon in the current research, such as the organic influence between the service quality and product. Of course there are such products placed on sale and enjoyed the common service, but at present there is another case that the product is on the market exclusively with the mobile company in here. This paper make a suggestion about process to improve how to make a new product include of customers view. So. This paper was using the QFD and AHP.