• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.919-921
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• 2005

본 논문은 임베디드 소프트웨어 개발자가 개발 소프트웨어의 성능 테스팅 결과를 그래픽 형태의 인터페이스를 통해 쉽고 편리하게 분석할 수 있는 성능 분석기를 제안한다. 제안하는 성능 분석기는 임베디드 소프트웨어에 대해 생성된 텍스트 기반 저수준의 성능 평가 정보를 그래픽 형태의 결과 화면으로 재구성하기 위한 API로 변형하는 정보 변환기 모듈과 API 형태의 자료구조를 이용해 성능 평가 결과를 그래픽 형태로 출력하는 레포트 생성기로 구성된다. 제안하는 그래픽 기반의 성능 분석기는 개발자나 사용자에게 그래픽 형태의 편리한 성능 분석 레포팅을 제공한다. 따라서, 임베디드 소프트웨어 개발자는 기존의 텍스트 형태의 결과를 분석하기 위한 시간과 노력을 줄일 수 있고, 즉각적이고 직관적인 결과 분석기회를 얻을 수 있어 관련 소프트웨어 개발 효율성을 높일 수 있을 것이다.

• Proceedings of the KIEE Conference
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• 1996.07b
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• pp.743-745
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• 1996

This paper presents an approach for the analysis of static voltage stability in power system. The proposed approach is based on multiple load flow calculation method using the redistribution algorithm of transmission loss, with which more realistic load flow solution can be obtained in the near of voltage collapse point. Some simulation results of the proposed approach show that the accuracy of static voltage stability analysis can be increased.

• Bulletin of the Korean Chemical Society
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• v.6 no.4
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• pp.234-238
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• 1985

The photoisomerization of 5-styryl-1,3-dimethyluracil is studied with nanosecond laser flash photolysis technique at room temperature. The laser flash photolysis of E-isomer produces the transient absorption spectrum regarded as the triplet-triplet absorption, but the transient absorption of Z-isomer does not show the typical decay curve, probably due to the facile photocyclization reaction during the laser flash photolysis. Using the energy transfer method on nanosecond laser spectroscopy, the energy of the lowest triplet state for E isomer is estimated to lie between 41.8 and 47 kcal/mol. The triplet lifetime for E-isomer obtained from the decay curve of the transient absorption is ca. 93ns. The $S_1 → T_1$ intersystem crossing of E-isomer on direct excitation is relatively inefficient at room temperature supporting the singlet mechanism for direct photoisomerization.

• Annual Conference of KIPS
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• 2023.11a
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• pp.998-999
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• 2023

본 논문에서는 스마트 홈 기반 노약자 응급상황 탐지 및 대응 시스템을 설계하였다. 2 개의 레이다 센서를 활용하여 센서 데이터를 분석하고 분류하며, 사용자의 상태를 취침, 외출, 응급상황 총 3 가지 경우로 식별한다. AWS 서버의 데이터베이스를 통해 응급상황 및 낙상 감지 이력을 축적하여 맞춤형 서비스를 제공한다. 어플리케이션을 통해 응급상황 자동 신고 접수와 센서 오작동시 자동 신고 접수 수동 취소 기능을 제공하는 응급상황 탐지 및 대응 시스템을 소개한다.

• Journal of Acupuncture Research
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• v.25 no.1
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• pp.1-14
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• 2008

Objectives : Delayed neuronal death(DND) of pyramidal neuronsin the CA1 regions of the hippocampus has been extensively studied following global brain ischemia, whereas little is known about DND in this highly vulnerable brain region after focal brain ischemia. The aim of the present study was to investigate the effect of Gastrodiae Elata(GA) pharmacopuncture on hippocampal neuronal apoptosis in rats with focal brain ischemic injury. Materials and methods : The neuroprotective effects of water extracts of GA were investigated in middle cerebral artery occlusion(MCAo) of Sprague-Dawley(SD) rats. Seventy-five healthy SD ratswere randomly divided into five groups following MCAo : control group with focal ischemia, saline injection group, pharmacopuncture group GA-1($0.0007mg/m{\ell}/g$), pharmacopuncture group GA-2($0.00035mg/m{\ell}/g$), pharmacopuncture group GA-3($0.00014mg/m{\ell}/g$). Results : The intensity of mGluR5 increased in the GA-1 group. The intensity of Bax and the Bax/Bcl-2 ratio decreased in the GA-1 group. The intensity of Bcl-2 increased in all the GA groups. The density of neurons stained by Cresyl violet and ChAT increased in the GA-1 group. Conclusions : Our study suggests that GA pharmacopuncture at $GB_{20}$ showed anti-apoptotic and neuroprotective effects on cholinergic neuronsin focal cerebral ischemia caused by stroke in SD rats.

• Progress in Superconductivity and Cryogenics
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• v.25 no.3
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• pp.38-42
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• 2023

The evaluation of no-insulation (NI) high-temperature superconducting (HTS) typically uses the lumped equivalent circuit (LEC) model. Constant parameters in the NI HTS LEC model accurately predict voltage and central magnetic field at currents below the critical current. However, it is difficult to find constant circuit parameters that simultaneously satisfy the measured voltage and magnetic field under overcurrent conditions. Recent research highlights changes in contact resistance during transient conditions, which may impact power loss estimation in NI HTS coils. Therefore, we confirm the influence of contact resistance changes on loss calculation in the transient state for NI HTS coil. To achieve this, we introduce a measurement data analysis method based on the LEC model and compare it with the LEC model using constant circuit parameters.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.12a
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• pp.47-47
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• 2020

In this study, we aimed to study carnation italian ringspot virus (CIRV) in Erigeron annuus (L.) Pers. in Bonghwa County, Korea. The collected samples showed mosaic and malformation symptoms. To identify the virus species, we performed high-throughput sequencing, reverse transcription polymerase chain reaction, and cloning. The virus was confirmed to be an unreported species, and therefore we performed genome sequencing of the samples. The complete genome was 4,746 nucleotides in length. The CIRV contained five open reading frames (ORFs), and it showed the typical features of members of the genus Tombusvirus. Phylogenetic analyses revealed that ClRV isolates had the highest nucleotide identities with the CZ isolate (95.89%) from Korea. In recent years, these viruses have sporadically been reported in floral scent and medicinal plants. This research found the first natural host infected with CIRV, and provides baseline information to determine the correlation between weeds and crops.

• Journal of Acupuncture Research
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• v.21 no.5
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• pp.163-177
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• 2004

Objectives : The purpose of this report is to use more Traction treatment clinically by comparing th Improvement of Low Back Pain and Sciatica between Common treatment Group and Common treatment with Traction treatment. Methods : This study was carried out on 40 patients with Low Back Pain and Sciatica who were hospitalized in Dongshin Univ. Oriental Hospital from January, 2003 to May, 2004. Group A of 20 patients were taken both common treatment and Traction treatment. And Group B of 20 patients were only taken common treatment. And at discharge day, we checked and compared VAS(Visual Analogue Scale) and ODI(Oswestry disability index) out of these two groups. SPSS(Statistical Program for Social Science) for Window was used for a statistical analysis and the independent T-test was performed to gauge the improvement of VAS(Visual Analogue Scale) and ODI(Oswestry disability index) out of these two groups, in which case, value of P below 0.05 is considered as useful. Results : The result of the VAS(Visual Analogue Scale) and ODI(Oswestry disability index) of comparison analysis between two groups at discharge day, shows that the improvement of Low Back Pain and Sciatica in cmmon treatment with Traction treatment Group is more effective than that in Common treatment.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.4A
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• pp.259-270
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• 2005

This paper proposes a mathematical model to analyze call-and packet-level performance of the TD-CDMA/TDD system which could serve a flexible radio resource management against multi-type heterogeneous and asymmetrical traffic conditions. On call-level analysis, the mathematical model based on queueing theory performs multi-dimensional operations using random vectors or matrices to consider multiple types of traffic and also deal with asymmetrical up- and down-direction transmissions separately. Employing the mathematical model, we obtain rail blocking probability for each type of traffic and also the optimum switching-point with the smallest call flocking probability. And on packet-level analysis, employing a non-prioritized queueing scheme between circuit and packet calls, we solve 2-dimensional random vector problem composed of the queue length for packets and the number of circuit calls being served. Finally, packet-level performance is analyzed in terms of the packet loss probability and the buffer size required under mixed-traffic conditions of multiple types of circuit and packet calls.

• Journal of Acupuncture Research
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• v.23 no.4
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• pp.27-38
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• 2006

Objectives : The aim of the present study was to evaluate Yandorak for the wide inflection and establishment of a diagnostic system. Methods : We analyzed the measurement value of Yandorak on fifty one patients with idiopathic facial paralysis and eighty four healthy persons from April 1, 2005 to March 1, 2006 by using Yangdorak(YDRAK-94N, Sord Medicom Co., Korea). Statistical analysis was performed using the SPSS 11.0 for Windows, Mann-Whitney test for the comparisons followed side(Right and Left), sex, palsy localization in Idiopathic facial paralysis and normal group and one-way ANOVA(Kruskal Wallis) for the comparisons followed age. p < .05 was considered significant statistically. Results The difference of the electric current value of all meridian except Bladder(BL) of normal group on both side extremity was not significant statistically, Electric current value of all meridian except Gall-Bladder(GB) was more higher in idiopathic facial paralysis group than in normal group. The measurement value of Yandorak followed sex and palsy localization were not significant statistically. Conclusion : It is suggested that the measurement value of six Hand Yang & Eum channel, Liver Meridian of Foot Gworeum(厥陰) and Stomach Meridian of Foot Yangmyeong(陽明) is more higher in idiopathic facial paralysis group than in normal group.