• Proceedings of the IEEK Conference
• /
• 2008.06a
• /
• pp.173-174
• /
• 2008

In this paper, we study IEEE 802.16 network for IP subnet aspects and propose optimized subnet model in accordance with IEEE 802.16 network in the point of mobility.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2009.04a
• /
• pp.456-458
• /
• 2009

소프트웨어의 크기가 커지고 복잡도가 증가함에 따라 소프트웨어 품질의 중요성은 점점 증대되고 있다. 소프트웨어의 품질 향상을 위해 소프트웨어 개발 조직은 테스트와 동료검토와 같이 제품 품질 향상을 위한 노력과 CMMI(Capability Maturity Model Integration), 소프트웨어프로세스 품질인증 기준과 같은 프로세스 품질 향상 노력을 하고 있다. 그러나 이러한 소프트웨어 분야의 품질 관리의 노력과 효과에 소요되는 품질비용에 대한 연구는 제조업이나 건설업 등 타 분야에 비해 부족한 실정이다. 본 연구에서는 소프트웨어 프로세스 개선을 위한 모델인 CMMI의 성숙도 레벨에 기반하여, K사의 품질비용관리 방안 적용 결과를 바탕으로 CMMI 성숙도 각 레벨마다 소프트웨어 개발 조직이 품질비용을 관리를 위한 목적과 활동으로 정의된 품질비용 관리 모델의 개발을 연구하였다.

• 한국정보통신설비학회:학술대회논문집
• /
• 2005.08a
• /
• pp.27-29
• /
• 2005

본 논문은 유무선 IP단말기에 다양한 컨텐츠를 제공하는 푸시 서비스 제공 솔루션을 설계하고, 이를 이용하는 네 가지 응용서비스 모델을 제시함으로써 IP-PBX/IP-Centrex와 같은 기업용 통신 솔루션[1]과 연계하여 신규 서비스를 제공할 수 있는 방안을 제시한다.

• ETRI Journal
• /
• v.24 no.4
• /
• pp.299-310
• /
• 2002

This paper describes an integrated network management framework for providing point-to-multipoint reservation service (PMRS) in an ATM network. There are two major issues confronting the network service provider in relation to this service: one is to rapidly confirm the acceptability of the subscriber's reservation at subscription time, and the other is to punctually activate the reserved point-to-multipoint service. To meet these requirements, we developed a service provision model (SPM) and a network resource model of a bandwidth allocation timetable (BATT). We propose a point-to-multipoint routing algorithm composed of ordering and backtracking procedures, which can find the best branch point under the complex network topology and can add more destinations to the existing point-to-multipoint route. We demonstrate the feasibility of the SPM, the BATT, and the point-to-multipoint routing algorithm by implementing our schemes and analyzing their performance under the operational ATM network of KT(Korea Telecom).

• Communications for Statistical Applications and Methods
• /
• v.22 no.2
• /
• pp.201-207
• /
• 2015

Support vector machine (SVM) is a well known kernel-trick supervised learning tool. This study proposes a working scheme for kernel-trick regression and classification (KtRC) as a SVM alternative. KtRC fits the model on a number of random subsamples and selects the best model. Empirical examples and a simulation study indicate that KtRC's performance is comparable to SVM.

• Proceedings of the Korean Society of Tobacco Science Conference
• /
• 2004.10a
• /
• pp.18-18
• /
• 2004

• Journal of the Korea Institute of Military Science and Technology
• /
• v.9 no.1 s.24
• /
• pp.135-143
• /
• 2006

This paper describes a requirement architecture modeling for the front end of KT-1 export version requirement definition processes to construct SDS(system development specification). The requirement definition process is a highly conceptual process that is difficult to carry out. This paper focuses on how to perform the KT-1 export version requirements definition process including the integration of process, methods and tools for the front-end activity of requirements definition process. This requirement model is structured in four segments, including requirement layering, requirement categorization, life cycle stakeholder and requirement definition process using Computer-Aided Systems Engineering tool(CORE).

• Journal of the Korean Society of Tobacco Science
• /
• v.27 no.2
• /
• pp.163-170
• /
• 2005

A theoretical model for predicting the capability curve of cellulose acetate filter is derived. The pressure drop is expressed as a function of the filter dimensions, the tow fiber characteristics, the filter weight, the fluid flow rate, and a filter fiber factor. Where, the filter fiber factor is affected by the distribution of the tow fibers within the filter, the relative orientations of the tow fibers, and their cross-sectional shapes. The minimum and maximum fraction of solids in capability curves determined from experimental data. Also, the filter fiber factor is expressed as a function of the filter length, tow fiber length, and tow fiber diameter. Capability curves predicted by the suggested model in this work correspond well with capability curves by experimental data.

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
• /
• 2012.07a
• /
• pp.70-74
• /
• 2012

• Korean Journal of Medicinal Crop Science
• /
• v.27 no.3
• /
• pp.218-231
• /
• 2019

Background: We recently reported that Salvia plebeia R. Br. extracts suppress leukotriene production and effectively inhibit the airway inflammatory response by modulating inflammatory chemokine and cytokine expression. Here, we investigated the synergistic airway anti-inflammation effect of Salvia plebeia and Panax ginseng (Korean red ginseng, KRG) that has been used to treat various immune diseases such as asthma. Methods and Results: To evaluate the synergistic airway anti-inflammatory effect of Salvia plebeia and KRG, we measured the inhibitory effect of monotheraphy with either or co-theraphy with both on leukotriene and reactive oxygen species (ROS) production. Using coal a combustion, fly ash, and diesel exhaust particle (CFD)-induced respiratory disease mouse model, we found that co-theraphy synergistically suppressed airway inflammatory signs such as alveolar wall thickness and collagen fibers deposition, and decreased the number of total cell, $CD11b^+Gr-1^+$ cells, and inflammatory cytokines (IL17A, TNF, MIP-2 and CXCL-1) in bronchoalveolar lavage (BAL) fluid. Conclusions: We confirmed respiratory protection as a therapeutic effect of the Salbia plebeia-KRG 3 : 1 complex (KGC-03-PS) via anti-tracheal muscle contraction and expectorant animal studies using a CFD-induced respiratory disease mouse model.