• The Transactions of the Korea Information Processing Society
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• v.4 no.6
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• pp.1576-1588
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• 1997

The AIN(Advanced Intelligent Network) employs the Intelligent Network Application Protocol(INAP) which is transparent to services and low layer telecommunication networks. In this paper, we introduce the standard structure of INAP, which has flexible structure for easy expansion as AIN evolves, and we propose a structure of INAP by defining its functional elements. Also we design, analyze the INAP for AAB(Automatic Alternative Billing) service, which is one of the target services of IN CS-1 using object-oriented methodology. We use OMT method which is modified by ObjectGEODE in the analysis phase and SDL language for design. Furthermore we simulate the INAP system to prove that the system has been correctly built and supplies the service correctly for which it was designed.

• The Journal of Information Systems
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• v.7 no.1
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• pp.181-208
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• 1998

In many literatures of model management, various schemes for representing model base schema have proposed. Ultimately, the goal is to arrive at a set of mutually supportive and synergistic methodologies and tools for the modeling problem domain and model base design. This paper focus on how best to structure and represent conceptual model of problem domain and schema of model base. Semantic concepts and modeling constructs are valuable conceptual tools for understanding the structural relationships and constraints involved in an model management environment. To this end, we reviewed the model management literature, and analyzed the constructs of modeling tools of data model management graph-based approach. Although they have good tools but most of them are not enough for the representation of structural relationships and constraints. So we wanted more powerful tools which can represent diverse constructs in a decision support modeling and model base schema design. For the design of a model base, we developed object modeling framework which uses Object Modeling Techniques (OMT). In Object Modeling Framework, model base schema are classified into conceptual schema, logical schema, and physical schema. The conceptual schema represents the user's view of problem domain, and the logical schema represents a model formatted by a particular modeling language. The schema design, this paper proposes an extension of Object Model to overcome some of the limitations exhibited by the OMT. The proposed tool, Extended Object Model(EOM) have diverse constructs for the representation of decision support problem domain and conceptual model base schema.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.13 no.1
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• pp.53-59
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• 2002

In this paper, we present design results for an orthomode transducer(OMT) to be used in multi-band antenna feeds. The OMT is realized in the form of a tapered square waveguide, where 18-20 GHz ports are placed in the taper region normal to the waveguide axis, while 30-45 GHz ports are placed in line with the waveguide axis. The reflection coefficient of each port is designed to be less than 20 dB, while the isolation between ports are greater than 15 dB. Thin septa are placed in side ports to reduce the effect of side ports on the return loss of the in-line port. The commercial software HFSS？ is used to design the whole structure.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.22 no.7
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• pp.711-719
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• 2011

A study of miniaturization of an L-band orthomode transducer(OMT) for field experiments of radar backscatter is presented in this paper. The proposed OMT is not required the additional waveguide taper structures to connect with a standard adaptor by the newly designed junction structure which bases on a waveguide taper. Total length of the OMT for L-band is about 1.2 ${\lambda}_o$(310 mm) and it's a size of 60 % of the existing OMTs. And, to increase the matching and isolation performances of each polarization, two conducting posts are inserted. The bandwidth of 420 MHz and the isolation level of about 40 dB are measured in the operating frequency. The L-band scatterometer consisting of the manufactured OMT, a horn-antenna and network analyzer(Agilent 8753E) was used STCT and 2DTST to analysis the measurement accuracy of radar backscatter. The full-polarimetric RCSs of test-target, 55 cm trihedral corner reflector, measured by the calibrated scatterometer have errors of -0.2 dB and 0.25 dB for vv-/hh-polarization, respectively. The effective isolation level is about 35.8 dB in the operating frequency. Then, the horn-antenna used to measure has the length of 300 mm, the aperture size of $450{\times}450\;mm^2$, and HPBWs of $29.5^{\circ}$ and $36.5^{\circ}$ on the principle E-/H-planes.

• Journal of the Korean Chemical Society
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• v.38 no.10
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• pp.719-725
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• 1994

Kinetic studies were carried out for substitution reaction of $cis-[Co(NH_3)_4Cl(OH_2)]^{2+}(\mu$ = 0.75) with GlyOR (R = $C_2H_5$, $CH_3$, H) in pH 5 buffer solution at $20^{\circ}C$ by UV/Vis-spectrophotometry. We obtained cis-[Co$(NH_3)_4$Cl(glyOR)]$^{2+}$ as product. The reaction turns out to be first order for Co(III) and GlyOR, respectively. The rate constants are obtained as 9.21, 11.66 and 15.33 l${\cdot}\;mol^{-1}{\cdot}sec^{-1}$ for GlyOEt, GlyOMt and GlyOH, respectively. The activation parameters $E_a,\;{\Delta}H^{\neq}\;and\;{\Delta}S^{\neq}$ for GlyOEt were obtained as 65.77, 63.35 kJ/mol and -53.51(e.u.), respectively and were obtained as 70.91, 68.50 kJ/mol and -38.42(e.u.) for GlyOMt. In case of GlyOH, respectable values of 79.72, 77.30 kJ/mol and -26.59(e.u.) were obtained. On the basis of kinetic data and the observed activation parameters, we propose that the proper mechanism involves $S_N$2 step.

• The Korean Journal of Mycology
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• v.42 no.4
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• pp.282-288
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• 2014

In this study, we attempted to isolate fungi from soybean fermented foods produced in Sunchang County and to identify Aspergillus oryzae from fungal isolates. Ten fungal isolates were identified with ${\beta}$-tubulin gene. According to the sequences of ${\beta}$-tubulin gene, ten fungal isolates were identified as A. oryzae/flavus complex. For further identification of the ten of fungal isolates, omtA gene, one gene of the aflatoxin biosynthesis gene cluster, was sequenced and the sequences were compared with those of A. oryzae and A. flavus strains from the GenBank database. In addition, identification of the ten fungal isolates was further confirmed using the PCR amplicon of norB and cypA intergenic region, in which a deletion was recognized relative to A. flavus and A. parasiticus. The amplicon size of the ten fungal isolate strains was smaller than those of A. flavus and A. parasiticus, but the same as that of the reference A. oryzae strain. These results indicated that the ten isolates should be identified as A. oryzae. The protease activity in rice koji made with 6, 13, 17, 27, 37 and 38 of strain, respectively was twice higher than that in control. The kojis made with nine of the A. oryzae isolates, respectively, did not produce aflatoxin, suggesting that the strains could possibly be used as starters for soybean products.

• Proceedings of the Korea Association of Information Systems Conference
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• 1997.10a
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• pp.197-216
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• 1997

본 연구는 의사결정지원시스템의 모델베이스 개발에 있어 개념적 스키마 설계를 위한 개념적 모델링 도구를 개발하는 것이 목적이다. 이를 위하여 본 연구에서는 개념적 모 델베이스 설계에 있어 객체모델링기법(Object Modeling Technique : OMT)에서 제시된 객 체모델의 확장을 시도한다. 또한 본 연구는 확장된 객체모델을 이용하여 특정 문제영역에서 개념적 모델링을 위한 방법을 제시하며, 확장된 객체모델이 실제문제를 얼마나 효과적으로 모델링 할 수 있는가를 보이기 위하여 정유회사의 수송문제에 적용하였다.

• Proceedings of the Korea Database Society Conference
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• 1997.10a
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• pp.463-471
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• 1997

비디오 데이타는 다양하고 방대한 양의 의미를 포함하고 있어 효율적인 내용기반 검색을 지원하기 위해서는 비디오 데이타를 기술하는 구조적이고 체계화된 형태의 메타데이타가 요구된다. 이러한 메타데이타는 검색 시 색인과 같은 역할을 수행하게 되므로 내용 기반검색의 가장 기본적이고 필수적인 데이타이다. 본 논문에서는 뉴스 응용 분야(News On Demand：NOD)를 적용한 비디오 데이터베이스 시스템의 효율적인 내용 기반 검색을 위한 메타데이타를 분류하고, Rambaugh의 OMT기법을 이용하여 메타데이타를 모델링한 후 질의 유형에 따라 모델의 접근 경로를 검사하여 모델을 검증하였다.

• 한국생물공학회:학술대회논문집
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• 2005.10a
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• pp.984-985
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• 2005

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.539-542
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• 2000

본 논문에서는 기존에 구현한 유닉스 버전 CASE(Computer Aided Software Engineering) 도구인 OODesigner를 윈도 버전으로 이식한 연구 결과에 대하여 논한다. 유닉스 버전 OODesigner는 Rumbaugh가 제안한 OMT(Object Modeling Technique) 기법을 지원하기 위해 구현되었지만 윈도 버전은 UML(Unified Modeling Language)을 지원할 수 있도록 기능이 향상되었다. 본 논문은 구현된 윈도 버전 OODesigner의 설계 문서와 구현 결과를 제시하는 것을 목적으로 한다.