• Proceedings of the Korean Information Science Society Conference
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• 2007.10b
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• pp.226-231
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• 2007

최근 비즈니스 프로세스가 복잡해짐에 따라, 비즈니스 프로세스를 설계 한 후 실행하는 과정에서 예상치 못한 문제들이 발생할 가능성 또한 높아지고 있다. 예상치 못한 문제의 발생은 막대한 비용 및 인적자원의 손실을 초래하기 때문에, 설계 된 비즈니스 프로세스는 엔진에 의해 실행되기 전에 다양한 방법으로 검증을 받아야 한다. 본 논문은, BPMN으로 설계된 비즈니스 프로세스의 컨트롤 플로우(Control Flow)에 대한 이상현상 중 데드락과 동기화의 부족에 대한 검증을 목적으로 한다. 데드락과 동기화의 부족은 Split 게이트웨이와 Join 게이트웨이의 종류에 따른 의미적 차이에 의해 발생한다. 본 논문에서는 비즈니스 프로세스를 방향성 그래프로 변환함으로써 Split 게이트웨이와 쌍을 이루는 Join 게이트웨이를 찾을 것을 제안하며, 찾아낸 (Split,Join)쌍은 컨트롤 플로우 검증 테이블을 이용하여 이상현상을 검증한다.

• Journal of Radiation Industry
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• v.4 no.4
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• pp.391-395
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• 2010

The characteristics for pollutant transport in tidal influenced area was investigated using tidal wave hydraulic scale model. Hydraulic scale model was composed of the tidal generator, attenuation area and channel. Also, wave height, current meter and conductivity meter were used with the measured instruments in hydraulic scale model. NaCl with a tracer was used to evaluate the advection phenomena under the different velocity profiles. The arrival time of the maximum concentration in the condition of the relatively fast velocity was measured about 30 seconds faster than ones in the conditions of low velocity. The measured concentrations of the tracer were shown in the detection points of the flow direction consecutively.

• Bulletin of the Korean Chemical Society
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• v.20 no.12
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• pp.1483-1486
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• 1999

The contents of pentachlorophenol (PCP) and 2,3,5,6-tetrachlorophenol (TeCP) in textile products are regulated for safety. Since an organic solvent such as 2-methoxyethanol is needed to extract chlorinated phenols from textile samples, nonaqueous capillary electrophoresis has been applied to achieve the separation of PCP and isomers of TeCP. The run buffer was 100 mM Tris/acetate in methanol whose pH was adjusted to 8.0. All of the analytes were negatively charged at pH 8.0 and their electrophoretic velocities were higher than the electroosmotic flow of the methanol buffer. A reverse voltage of -20 kV was applied along a 27-cm fused silica capillary with ID of 50 μm, and PCP and 3 TeCP isomers were separated based on the difference in $pK_a$ values in less than 4 min. The limits of detection (S/N = 3) were about 0.02 μM. By varying pH of the methanol run buffer, $pK_a$ values of the 4 chlorinated phenols were also estimated.

• Proceedings of the Korea Society for Simulation Conference
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• 2003.11a
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• pp.201-206
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• 2003

In clinical practice, CT Angiography is a powerful technique for the visualziation of blood flow in arterial vessels throughout the body. However CT Angiography images of blood vessels anywhere in the body may be fuzzy if the patient moves during the exam. In this paper, we propose a novel technique for removing global motion artifacts in the 3D space. The proposed methods are based on the two key ideas as follows. First, the method involves the extraction of a set of feature points by using a 3D edge detection technique based on image gradient of the mask volume where enhanced vessels cannot be expected to appear, Second, the corresponding set of feature points in the contrast volume are determined by correlation-based registration. The proposed method has been successfully applied to pre- and post-contrast CTA brain dataset. Since the registration for motion correction estimates correlation between feature points extracted from skull area in mask and contrast volume, it offers an accelerated technique to accurately visualize blood vessels of the brain.

• Annual Conference of KIPS
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• 2012.11a
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• pp.488-491
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• 2012

최근 카메라 센서 및 알고리즘의 발달로 엔터테인먼트 목적의 영상 시스템을 비롯한 공정 기술, 교육 및 의료 등 다양한 목적의 영상 시스템이 개발 되고 있다. 또한 범죄 예방, 사고 상황 인식을 위한 감시 영상 시스템의 연구도 활발히 진행되고 있다. 본 논문에서는 이상 상황 인식을 위한 지능형 교통 시스템에 대해 제안하고자 한다. 제안하는 시스템은 크게 학습 과정과 이상 상황 인식 과정으로 나누어진다. 학습 과정에서는 CCTV와 같은 정적인 카메라에서 촬영된 도로 교통 영상에서 이동 객체의 특징을 추출하고 이를 추적하여 특징 벡터를 구성한다. 구성된 특징 벡터들은 클러스터링 기법을 통해 장면을 모델링하는데 이용되며 최종적으로 이 모델을 이용해 실시간으로 도로 교통 영상에서 이상 상황을 인식할 수 있게 된다. 실험을 통한 성능 평가를 통해 시스템의 우수함을 확인 하였다.

• Journal of Oral Medicine and Pain
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• v.43 no.4
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• pp.99-111
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• 2018

$Sj{\ddot{o}}gren^{\prime}s$ syndrome (SjS) is a common autoimmune disorder characterized by lymphocytic infiltration in the salivary and lacrimal glands, resulting in severe dry mouth or eyes. As a result, most of SjS patients suffer from oral dryness and can visit the department of oral medicine with or without diagnosis of SjS. Therefore, oral medicine specialists should know clues, which may indicate the diagnosis of SjS from the clinical and laboratory investigations. By the recent SjS criteria, SjS can be diagnosed by focus score, ocular staining, Schirmer's test, unstimulated whole saliva flow rate, and anti-SSA/Ro antibodies. The aim of this article is to review the diagnostic criteria, clinical investigation, and basic aspect related to SjS and to make oral medicine specialists play an important role in the detection of emerging SjS.

• Bulletin of the Korean Chemical Society
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• v.16 no.3
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• pp.221-226
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• 1995

A method for determining nitrate in post treatment chromium plating solutions with PVC-based nitrate-selective electrodes is described. PVC-based nitrate-selective membranes which contain TDMANO3 ion-exchanger in PVC/NPOE, PVC/DOA or PVC/DBP matrices, and a commercially available Corning electrode (No. 476134) have been compared in respect of their detection limits, response slopes, selectivities at various pHs, and dynamic response to the hydrochromate ion in basic condition. The PVC/DBP/TDMANO3 membrane electrode was chosen as the ISE detector for the determination of nitrate in the presence of hydrochromate interference. The amount of nitrate in real post treatment chromium plating solution could be determined successfully with this electrode in both static and flow-injection measurements when the sample was properly diluted with an alkaline buffer.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.101.2-102
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• 2003

Baicalein (5,6,7-trihydroxyflavone), a flavonoid originated from the root of Chinese medicinal herb Scutellaria baicalensis, has been shown to exert anti-inflammatory and antioxidant effects and hepatic stellate cells play an important role in the pathogenesis or hepatic fibrosis. In this study, we investigated apoptosis stimulation by baicalein in activated rat hepatic stellate cells (T-HSC/C1-6). Transformed rat hepatic stellate cells (T-HSC/C1-6) were treated with baicalein(100uM, 70uM, 40uM). Apoptosis was determined by detection of DNA fragmentation in gel electrophoresis, morphological alternations by flow cytometry and quantification of phosphatidylserine externalization by Annexin V labeling. (omitted)

• ETRI Journal
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• v.44 no.3
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• pp.512-523
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• 2022

Random delay countermeasures introduce random delays into the execution flow to break the synchronization and increase the complexity of the side channel attack. A novel method for attacking devices with random delay countermeasures has been proposed by using a maximal overlap discrete wavelet transform (MODWT)-based power trace alignment algorithm. Firstly, the random delay in the power traces is sensitized using MODWT to the captured power traces. Secondly, it is detected using the proposed random delay detection algorithm. Thirdly, random delays are removed by circular shifting in the wavelet domain, and finally, the power analysis attack is successfully mounted in the wavelet domain. Experimental validation of the proposed method with the National Institute of Standards and Technology certified Advanced Encryption Standard-128 cryptographic algorithm and the SAKURA-G platform showed a 7.5× reduction in measurements to disclosure and a 3.14× improvement in maximum correlation value when compared with similar works in the literature.

• KEPCO Journal on Electric Power and Energy
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• v.7 no.2
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• pp.309-316
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• 2021

For the detection of the state of charge in VRFB-ESS, the analyses of UV-Visible spectrometry and the measurements of potential between the anolyte and catholyte were used in parallel. This paper includes the production of 4-valant ion from VOSO4 powder, 3- and 5-valant ions from electrochemical charge of 4-valant ion and 2-valant ion from 3-valant ion. It also includes the analyses of these valance ions and unknown electrolyte at any time using UV-Visible spectrometry. Through the analyses of the valance ions in samples, the SOCs of the samples at any charge-discharge times were verified.