• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2007.05a
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• pp.105-108
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• 2007

These days, a cultural life level is improved through the industrialization and information-oriented age. It is becoming Emotional. Especially, people spend most of time in the office space. The office space is the place where they usually have mental activity and Inter-communication with others. So people who work in the office space need to apply not only convenience and public welfare but also comfortablespace. Moreover, This study analyzes color of a office space and materials, and accept from efficiency and an economic design. And will present direction of a color plan to be able to feel the sensitivity design that accepted from functionality and decoration.

• Proceedings of the IEEK Conference
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• 1999.11a
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• pp.83-86
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• 1999

In this paper, a serially concatenated space-time code (SCSTC) with bandwidth efficiency and high data rate is studied. The suggested SCSTC is composed of space-time code, the convolutional code and Interleaver. The SCSTC has a very high BER performance than the conventional space-time code. The BER performance of the suggested SCSTC can be proven by using computer simulation through the iterative decoding method. The first decoder uses Symbol-MAP algorithm and the second decoder uses Bit-MAP algorithm for decoding tile information bits. The simulation results show the performance of the suggested SCSTC is better than the conventional Space-Time Code.

• The Journal of the Korean dental association
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• v.48 no.12
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• pp.868-879
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• 2010

Adjunctive orthodontic therapy may be required to create appropriate space, to address misalignment and tooth size discrepancy for better function and esthetics. The desired interproximal alveolar contour and gingival embrasure form can be developed during treatment. Various applications of temporary anchorage devices for pre-prosthetic tooth movement allowed clinicians to achieve high efficiency, shorter treatment time, and less discomfort of patient. Biomechanical considerations for the periodontal status of the affected teeth are required to successfully control the vertical and horizontal space. Hence, the interdisciplinary approaches have an essential role in maximizing the favorable treatment outcome. In particular, pivotal Clinical decisions such as whether to open or close the space should be made by consensus of the involved dentists. This article presents the orthodontic treatment approaches for prosthodontic works including mesiodistal and vertical space regaining specially for cases of unrestored teeth over an extended period of time.

• Journal of the Korean Institute of Educational Facilities
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• v.23 no.5
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• pp.3-10
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• 2016

The purpose of this study is to provide a basis for planning of school foodservice facilities to operate with hygiene and efficiency corresponding a decrease of the number of students. This study analyzes the composition of space for foodservice facilities categorizing by the functions which are preparation area, cooking area, cleaning area, storage, and worker's room on elementary, middle and high school in Seoul Metropolitan city since 2009 that the Seoul School Health Promotion Center published a manual for school foodservice facilities. The calculation can be a basis for school planners and the general schools to use available area in each school and can manage the school usage plan appropriately. The number of students in each school has been regarded as the space planning element, but the number of students would considered with using the specific area and time.

• Journal of information and communication convergence engineering
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• v.8 no.4
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• pp.411-415
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• 2010

Conventional Augmented Reality has used data gloves or markers for smooth interaction between objects and background. This causes inconvenience of use and lower immersion. To build up immersion in Augmented Reality, additional input devices must be removed. For this purpose, accurate recognition of space coordinates is needed even with no attachment of markers. This paper proposes a method to create virtual space coordinates for interaction without wearing additional input devices so as to improve immersion in Augmented Reality. The acquired image was projected to 2D space and vanishing lines were extracted to calculate the virtual space coordinates. Then the sizes of the inserted objects were varied in accordance with the size of the virtual coordinates area based on the image projected onto the 2D coordinates. This resulted in improved immersion. This method can increase the efficiency of object creation by excluding the use of a 3D modeler for creation of 3D objects.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1065-1068
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• 2009

The current study introduces a new color space applicable to next-generation media such as UHDTV and 3D-TV systems that are in the middle of development. Display referred approach was taken into account rather than scene referred approach for deriving a new RGB-primary set forming the new color space. The reproducible color range generated by the newly suggested RGB-primary set encompasses almost entire real-world surface colors with a very good efficiency.

• 한국전산유체공학회:학술대회논문집
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• 2009.04a
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• pp.347-354
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• 2009

Plate Heat Exchnager(PHE) has recently become widely adopted for cogeneration systems owing to its small installation space and high thermal efficiency. The gap between plates can be changed depending on its assemble type, i.e. gasket or blazing. The gap is known to affect thermal efficiency and working pressure drop in PHE with complicated geometrical features. Numerical simulation techniques have been developed to deal with PHE with complex configuration of chevron plates. The present study is aiming at identifying the gap effect on pressure drop and thermal efficiency of the PHE. The numerical simulation results show that the gap has relatively large effects on working pressure drop than thermal efficiency in performance of PHE.

• Journal of the Korean Society for Library and Information Science
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• v.36 no.3
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• pp.275-286
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• 2002

This paper estimates the relative efficiency of 29 university libraries in Seoul by data envelopment analysis. We employed library space, staff and book collection as inputs, and book circulation and reader visits as outputs. The result shows that average efficiency score is 0.5248 and only 3 libraries are efficient. Inefficiency is estimated to be 47.52%. Reorganization may be necessary in order to achieve greater efficiency.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.1716-1721
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• 2011

The Public Address and Passenger Information System of Rolling Stock should be able to perform automatic announcements in connection with TCMS(Train Control and Monitoring System), common announcements and emergency announcements for safe operation and the passengers. CCTV(Closed Circuit Television) System also should be able to watch passenger compartment for safety. Those equipments are very important thing for train service and safety. but the installation of equipment is restricted by space, weight, modulation. therefore, Passenger Information Intergrated System(PIIS) is required to consider economical efficiency, technical trend, expansion and space insufficiency. and system based on IP network has to be considered as new PIIS. so PIIS could meet economical efficiency and expansion. and it could go further and share network with TCMS and others.

• International Journal of Aeronautical and Space Sciences
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• v.17 no.3
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• pp.315-323
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• 2016

This paper deals with experimental investigation of active flow control via synthetic jets using an unmanned combat air vehicle (UCAV) planform. Fourteen arrays of synthetic jets, mounted along both leading edges, were fully or partially activated to increase aerodynamic efficiency and reduce pitch-up moment. The measurements were carried out using a six-component external balance, a pressure scanner, and tuft flow visualization. It was observed that aerodynamic efficiency (L/D) and pitching moment were clearly affected by the location of jets. In particular, inboard and outboard actuation could effectively increase L/D. Moreover, inboard actuation showed a reduction in the pitch-up, even more than that generated by the full actuation. These results suggest that inboard actuation not only effectively increases L/D but also reduces the pitch-up using only a few actuators.