• The Korean Journal of Applied Statistics
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• v.21 no.5
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• pp.727-738
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• 2008

If a cointegrating relation is affected by important economic and political events occurred in the sample period, the assumption of the time-invariant cointegrating vector is violated, which leads to the misrep-resentation of the actual relations between the variables. From such a viewpoint, this study utilizes the recursive estimation process in testing for the stability of the long-run equilibrium of the domestic stock market system and then attempts to develop the framework for stabilizing time-variant cointegraing relations by introducing the dummy variables where the structural changes are found to exist.

• Convergence Security Journal
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• v.10 no.3
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• pp.51-60
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• 2010

The expansion of internet technology has made convenience. On the one hand various malicious code is produced. The number of malicious codes occurrence has dramadically increasing, and new or variant malicious code circulation very serious, So it is time to require analysis about malicious code. About malicious code require set criteria for judgment, malicious code taxonomy using Algorithm of weakness difficult to new or variant malicious code taxonomy but already discovered malicious code taxonomy is effective. Therefore this paper of object is various malicious code analysis besides new or variant malicious code type or form deduction using visualization of strong. Thus this paper proposes a malicious code analysis and grouping method using visualization.

• Journal of Arbitration Studies
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• v.30 no.1
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• pp.139-160
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• 2020

Shalish is a key ingredient of the dispute resolution culture in Bangladesh since a formal court system has been known to show inefficiencies, such as overburdened cases and litigation process delays. This paper investigates the main function of Shalish and examines the evolution of Shalish in the perspectives of its three variants: a community-based Shalish, a village court, and an NGO variant of Shalish in modern extensions. It was found that traditional Shalish may play a role in the dispute resolution system in modern villages. A village court is a kind of hybrid dispute resolution system combining an informal dispute resolution with a formal court system. A village court is administered by the Union Parishad without intervention from the central government. Both the Shalish and village court have the weakness of unfair verdict exercised by local elders within a community. For this reason, an NGO variant Shalish is to reflect voices of women and other lower people in the community. To this study's interpretation, a village court is a new kind of Shalish combined with a formal court system while an NGO variant Shalish is also a "new" Shalish combined with a mediation system. In this respect, core elements of Shalish tradition have not been changed although various forms of new dispute resolution systems have emerged in the modern world.

• Journal of the Korean Institute of Telematics and Electronics S
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• v.35S no.6
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• pp.9-18
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• 1998

In this paper, an equalization technique for OFDM(orthogonal frequency division multiplexing) in a time-variant multipath fading environment is described. A loss of subchannel orthogonality due to time-varying multipath fading channels leads to interchannel interference (ICI) which increases the error floor in proportion to Doppler frequency. A simple frequency-domain equalizer which can compensate the effect of ICI caused by time variation of multipath fading channel is proposed by modifying the previous frequency-domain equalization technique with taking into account only the ICI terms significantly affecting the error performance. The effectiveness of the proposed approach is demonstrated via computer simulation by applying it to OFDM systems when the multipath fading channel is slowly time variant.

• International Journal of Naval Architecture and Ocean Engineering
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• v.8 no.5
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• pp.466-474
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• 2016

The model tests results for the original lines of an 10000TEU container vessel show that the delivered power is higher and could not satisfy the requirement of energy saving effects and design targets. In this paper, the lines optimization of the 10,000 twin-skeg container vessel was carried out by parametric modeling and CFD simulations. At first, the CFD methods for twin-skeg hull form were validated by the comparison with the experimental results. Then more than one hundred parameters were adopted for the establishment of the fully parametric model. Based on the parametric model of the twin-skeg container vessel, the preliminary optimization was carried out by tight coupling of FRIENDSHIP-FRAMEWORK with potential flow of SHIPFLOW. Then several important parameters related to the after part of twin-skeg vessel were investigated by viscous flow computation. The final optimized variant PM11, which the total resistance was reduced by about 8.3% in model scale, is obtained within the constraints of general arrangement. And the model tests for variant PM11 was carried out in CSSRC, which shows that the resistance of optimized variant PM11 is decreased by about 8.6%.

• Annals of Clinical Neurophysiology
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• v.4 no.1
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• pp.60-62
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• 2002

Two separate cranial nerve variants of Guillain-Barre syndrome(GBS) have been reported. One is Miller-Fisher syndrome, the other is polyneuritis cranialis. Involvement of the extraocular muscles in variants of GBS is well recognized, but complete external and internal opthalmoplegia is rare. Optic neuritis remains the only consistent, albeit very uncommon, evidence of inflammation of central nervous system myelin in GBS. This propose that GBS is part of a spectrum of central and peripheral inflammation. This case is an unusual clinical variant who had ptosis, opthalmoplegia, areflexia, ataxia, optic neurritis, marked oropharyngeal, and neck and shoulder weakness. This combined regional from is able to misdiagnose initially as botulism or diphtheria and less so, myasthenia. So if we were consider variant from of GBS, it is possible for make a correct diagnosis more easily and treatment without delay.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.3
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• pp.915-921
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• 2012

Background: Previous studies investigating the association between TP53 Arg72Pro polymorphism and gastric cancer (GC) risk in Asian population have reported controversial results. Thus, a meta-analysis was performed. Methods: A comprehensive literature search was conducted and 17 case-control studies were finally included, involving a total of 5,990 GC cases and 6,812 controls. Subgroup analyses were performed by the sample size. Results: Meta-analysis of all 17 studies showed variant genotypes of TP53 Arg72Pro to be associated with an elevated GC risk in three genetic comparison models ($OR_{Pro\;vs.\;Arg}$=1.13, 95%CI 1.03-1.25, $P_{OR}$=0.01; $OR_{Homozygote\;comparison\;model}$=1.33, 95%CI 1.07-1.64, $P_{OR}$=0.009; $OR_{Dominant\;genetic\;model}$=1.13, 95%CI 1.05-1.22, $P_{OR}$=0.002). Besides, a more obvious association was observed after the heterogeneity was decreased (all P values less than 0.001). This association was further identified by both subgroup and sensitivity analyses. Conclusions: This meta-analysis suggests the Pro variant of TP53 Arg72Pro contributes to gastric cancer risk in Asians.

• Korean Journal of Logic
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• v.16 no.1
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• pp.1-15
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• 2013

Yang [12] investigated weakening-free fuzzy logics expanded by the delta connective $\Delta$, which can be interpreted as Baaz's projection and its generalizations. In this paper, we keep investigating such logics with an alternative delta connective $\Delta$, which can be regarded as a variant of the Baaz projection. The main difference is that although our new $\Delta$ satisfies many properties of Baaz projection, it can nether be interpreted as Baaz's projection itself nor its generalizations. For this, we first introduce several weakening-free fuzzy logics with the alternative connective $\Delta$. The algebraic structures corresponding to the systems are then defined, and their algebraic completeness is proved.

• Communications for Statistical Applications and Methods
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• v.27 no.5
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• pp.535-546
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• 2020

In genetic association studies, pleiotropy is a phenomenon where a variant or a genetic region affects multiple traits or diseases. There have been many studies identifying cross-phenotype genetic associations. But, most of statistical approaches for detection of pleiotropy are based on individual tests where a single variant association with multiple traits is tested one at a time. These approaches fail to account for relations among correlated variants. Recently, multivariate regularization methods have been proposed to detect pleiotropy in analysis of high-dimensional genomic data. However, they suffer a problem of tuning parameter selection, which often results in either too many false positives or too small true positives. In this article, we applied selection probability to multivariate regularization methods in order to identify pleiotropic variants associated with multiple phenotypes. Selection probability was applied to individual elastic-net, unified elastic-net and multi-response elastic-net regularization methods. In simulation studies, selection performance of three multivariate regularization methods was evaluated when the total number of phenotypes, the number of phenotypes associated with a variant, and correlations among phenotypes are different. We also applied the regularization methods to a wild bean dataset consisting of 169,028 variants and 17 phenotypes.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.322-325
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• 2017

C와 C++는 컴파일된 결과물의 실행 속도가 타 프로그래밍 언어로 작성된 것보다 빠르고 기존의 시스템과 호환성이 좋다는 점 등의 장점을 갖고 있기 때문에 많은 프로그래머들로부터 여전히 사랑받는 프로그래밍 언어이다. 하지만 C와 C++로 생성된 프로그램은 버퍼 오버플로 취약점과 같은 다양한 메모리 커럽션 취약점을 갖고 있기 때문에 쉽게 외부의 공격자들에게 노출된다. 따라서 사용자가 이와 같은 언어로 생성된 프로그램을 안전하게 실행하기 위해서는 시스템에 신뢰할 수 있는 방어 기법이 미리 적용되어 있어야만 한다. 본 연구에서는 메모리 커럽션 취약점을 이용한 공격을 탐지하기 위한 기법 중 하나인 Multi-variant Execution Environment (MVEE)를 소개하고, MVEE의 핵심 요소 기술인 레플리카 생성 기법들에 대하여 설명하고 비교 분석하고자 한다.