• Fire Science and Engineering
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• v.18 no.1
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• pp.42-48
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• 2004

The deterministic modeling techniques like Zone model and Field model are mainly used for thermal distribution and smoke flow at fire case in multi use facilities. While Zone model analyse fire simulation by dividing spaces by 2 section, the Field model dividing many cells. However, the difficultly follows to prove efficiency between the two models when it applys. Therefore new modeling development is required which in closes to real situation by verify number algorithm and related data for fire modeling. The paper analyses the efficiency of two different fire modeling at interior spaces of multiplex cinema theater. It is found that the zone model for average distribution and the field model for detail space phenomenon are relevant to apply. Also, Filed model is useful to the result that fire analysis and position of detector and review for smoke control system.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.04a
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• pp.42-43
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• 2013

원전 방화지역의 화재리스크는 존모델 또는 필드모델을 사용하지만 화재 시나리오 또는 현상의 고찰 없이 사용되어온 측면이 있다. 한편 PIRT 기법은 전산코드의 적합성을 평가하고 최신기술과 입력자료의 타당성을 분석하여 우선순위 등급을 선정한다. 따라서 PIRT 기법을 화재모델링 분석에 적용할 경우 화재모델링 분석방법의 개선과 결과 값의 신뢰성을 높일 수 있는 기술로 활용할 수 있다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.11a
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• pp.77-78
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• 2013

BRANZFIRE 모델은 가연성 내장재의 화재위험성을 평가하는 존모델이다. 내장재의 화염확산에 따른 화재성장모델을 공간화재에 적용하는 다실형 존모델로서 특히 ISO 9705 시험화재 시나리오 적용에 매우 유용하다. 본 연구에서는 화재성장모델에서의 화원 및 공간특성 따른 열방출비율과 화염확산 예측 인자의 영향성을 분석하였다

• Cartoon and Animation Studies
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• s.36
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• pp.19-44
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• 2014

is an animation by John Halas and Joy Batchelor, based on Animal Farm by George Orwell, screened in England, 1954. by John Halas and Joy Batchelor showed true occasions in history, such begins with Bolshevik Revolution which broke out in October of 1917, through new economic policy called NEP, monopolization of power by Stalin, and Moscow Justice as a fable. in positioned real people from Bolshevik revolution as characters as in allegory, due to its fable-nature. However, descriptions in by John Halas and Joy Batchelor differs with by George Orwell from the middle of its story. In by John Halas and John Batchelor, Snowball is killed by Napoleon, unlike in by George Orwell, which Snowball is thrown out by Napoleon. showed Stalin as Napoleon, and Trotsky as Snowball in its characters. Satire description on Stalin's reign of terrorism after Bolshevik Revolution was same in both by George Orwell and by John Halas and Joy Batchelor; however, the view on Trotsky was different with each other. Therefore, this paper is written to describe allegorical factors of Bolshevik Revolution in by John Halas and Joy Batchelor, as well as to reinterpret the value of Trotsky and Russian Revolution by researching Snowball in .

• Proceedings of the Korean Fiber Society Conference
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• 2002.04a
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• pp.77-80
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• 2002

드래프팅은 staple yarn의 생산에 있어 대단히 중요한 조작이다. 이 조작은 여러단계의 방적공정에서 반복 수행되며 각 공정에서 다음 공정에 적합하도록 두께를 가늘게 하고 집속체의 불균제를 최소화하여 제품의 품질을 결정하는데 그 중요한 역할을 한다. 지금까지 드래프트 전후의 슬라이버 상태에 관한 연구는 많이 이루어져 왔지만, 드래프트 존 내의 슬라이버의 동적거동에 대한 모델 연구는 아직 미흡한 실정이다. (중략)

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.10a
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• pp.833-834
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• 2014

This paper provides requested functions for intelligent school-zone safety management, and describes the principle design.

• Journal of KIISE:Databases
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• v.34 no.4
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• pp.315-327
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• 2007

The performance of database applications with large sets of multidimensional data depends on the performance of its access methods and the underlying disk system. In modeling the disk system, even though modem disks are manufactured with multiple physical zones, conventional access methods have been developed based on a traditional disk model with many simplifying assumptions. Thus, there is a marked lack of investigation on how to enhance the performance of access methods given a zoned disk model. The paper proposes novel zoning techniques that can be applied to any multidimensional access methods, both static and dynamic, enhancing the effective data transfer rate of underlying disk system by fully utilizing its zone characteristics. Our zoning techniques include data placement algorithms for multidimensional index structures and accompanying localized query processing algorithms for range queries. The experimental results show that our zoning techniques significantly improve the query performance.

• The Journal of Society for e-Business Studies
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• v.14 no.1
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• pp.143-160
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• 2009

In determining the performance of OLAP database applications, the structure and the effective access methods to the underlying disk system is a significant factor. In recent years, hard disks are designed with multiple physical zones where seek times and data transfer rates vary across the zones. However, there is little consideration of multi-zone disks in previous works. Instead, they assumed a traditional disk model that comes with many simplifying assumptions such as an average seek-time and a single data transfer rate. In this paper, we propose a technique storing a set of materialized views into the multi-zoned disks in OLAP environment dealing with large sets of data. We first present the disk zoning algorithm of materialized views according to the access probabilities of each views. Also, we address the problem of storing views in the dynamic environment where data are updated continuously. Finally, through experiments, we prove the performance improvement of the proposed algorithm against the conventional methods.

• Journal of the Earthquake Engineering Society of Korea
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• v.13 no.2
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• pp.29-36
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• 2009

The present study emphasizes a nonlinear model to predict the shear behaviour of reinforced concrete interior beam-column joints. To model the shear behaviour of a panel zone in the beam-column joint, a modified softened truss model theory for in-plane shear prediction was introduced. This relationship was changed to define the characteristics for the rotational spring to represent the shear deformation in the joint by an equivalent moment-rotation relationship from the joint equilibrium. The analysis model was compared with experiments on reinforced concrete interior beam-column joints that were subjected to axial and shear forces, and the current model was found to accurately predict not only the shear force but also the shear deformation in the joint.

• Proceedings of the SAREK Conference
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• 2005.11a
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• pp.45-50
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• 2005

The supply outdoor airflow rates are calculated and analyzed using a multizone network model in a high-rise residential apartment. The system parameters include parameters related to weather conditions, building conditions, operation conditions, and facility conditions. Simulations are conducted according to the method of design of experiments and analysis of variance is conducted to investigate the effects of parameters on ventilation rate. A correlation equation is derived to predict ventilation rates of the building depending on the various parameters.