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      • Sean O'Casey 작품에 나타난 여성의 이미지 : Dublin Trilogy를 중심으로 Dublin Trilogy

        조영창 배화여자대학 1999 培花論叢 Vol.18 No.-

        This paper is to analyse how Sean O'Casey depicts the image of women in his works, especially in Dublin Trilogy. He conceives that reality is distorted and corrupted because of men's stupid ideas and acts, contrary to women's ability to perceive reality per se. O'Casey tried to seek effective ways to effect social correction and proffer a new vision by satirizing and exposing the reality in his works. Accordingly, the consistent theme of his works is poignant criticism of men's stupidty. The aim of his criticism of men's stupidity is by exposing various froms of their foolishness which results in physical and spiritual destruction of the Irish society as well as innocent women and children, to present his vision of a better society. He tells us that the construction of a better society requires positive and active attitudes women characters have shown us in Dublin Trilogy. O'Casey greatly enhances the image of women by delineating women's sense of reality and brave acts while criticizing men's unrealistic behavior based on absurd ideas such as patriotism and nationalism. He also makes women characters assert their own moral views and dismantle the ideology of women that they should be dependent, obedient, domestic and weak to some degree. By portraying women's realistic behavior and moral views in Dublin Trilogy, O'Casey suggests that man's nature and women's nature are not two separate opposing things. Therefore, only when they are integrated dialectically, organically and harmoniously, he propounds, new meaningful order of society can be established.

      • 시퀀셜 루프 필터를 이용한 비트 동기 방식

        조영창,정종혁,강상욱 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)

        본 논문에서는 주파수 도약 방식 시스템에 적합하도록 새롭게 고안한 비트 동기 방식을 제안한다. 제안한 비트 동기 방식은 에러 심볼 검출기를 새로이 고안하여 이를 기존의 시퀀셜 루프 필터와 결합한 새로운 ADPLL 방식이다. 홉 뮤트 잡음과 임펄스 잡음등과 같은 잡음 구간에서는 비트 추적을 억제함으로써 시퀀셜 루프 필터의 성능을 향상시키고, 주파수 도약 시스템에서의 동기 확률을 개선시켰다. 제안된 비트 동기 방식은 기존의 방식과 비교하여, 위상 오류와 비트 누락 특성에서 성능이 개선됨을 모의실험을 통하여 보였다.

      • KCI등재

        실시간 위험환경 관리를 위한 센서 모듈시스템 연구

        조영창,권기진,정종혁,김민수 한국전기전자학회 2018 전기전자학회논문지 Vol.22 No.4

        본 연구에서는 산업현장, 지하시설물의 밀폐공간에서 유해가스 및 생체신호를 동시에 검출이 가능한 휴대형 검출시스템을개발하였다. 개발된 시스템은 가스검출용 센서모듈, 패치형 1채널 소형 ECG 센서, 3축가속도 검출센서용 모듈 및 통계분석용 시스템이다. 시스템모듈의 성능을 검증하기 위해 디지털해상도, 생체신호증폭도, 출력전압 및 초소형모듈의 크기로 평가하였다. 개발된 시스템의 성능결과 디지털해상도는 300(rps), 신호증폭이득은 500dB이상 성능을 가졌고, 심전도 모듈은50mm×10mm×10mm로 제작되어 패치형으로 활용도를 높일 수 있다. 본 연구의 휴대용 가스검출기 및 패치용 심전도, 가속도검출기는 산업현장작업자의 실시간 감시용 IoT 기반 관리시스템으로 활용한다면 가치가 높을 것으로 생각된다. In this study, a portable detection system was developed that can detect harmful gas and signals simultaneously in anenclosed space of industrial sites and underground facilities. The developed system is a sensor module for gas detection,a patch type 1 channel small ECG sensor, a module for three-axial acceleration detection sensor, and a system forstatistics. In order to verify the performance of the system modules, the digital resolution, signal frequency, outputvoltage, and ultra-small modules were evaluated. As a result of the performance of the developed system, the digitalresolution was 300 (rps) and the signal amplification gain was 500 dB or more, and the ECG module was manufacturedwith 50mm×10mm×10mm to increase patch utilization. It is believed that the product of this research will be valuable ifit is used as an IoT-based management system for real-time monitoring of industrial workers.

      • KCI등재
      • KCI등재

        Comparison of Characteristics of P-Wave Detection in ECG with Wireless Patch Electrodes

        조영창,윤정오,김민수 한국산업정보학회 2014 한국산업정보학회논문지 Vol.19 No.1

        P-wave characteristic in the human electrocardiogram (ECG) is important in the diagnosis of atrial conduction pathology. In this paper, we measured an ECG signal from patient with cardiovascular disease using one lead ECG electrode system which is based on the wireless cardiac monitoring system. And we detected a P-wave in ECG signal using the complex-valued continuous wavelet transforms (CWT) according to two kinds of patch type electrodes such as an existing narrow patch type electrode and the improved wide patch type electrode presented in this paper. Also, we compared the characteristics in detecting the P-wave in terms of the magnitude and the width of P-waves. From the results of comparison we found that the width and the magnitude of P-wave detected using the wide patch type electrode is improved to be interpreted easier compared to those using the narrow patch type electrode. Furthermore, we have also proven that the complex-valued CWT can be used as a robust detector for P-wave in ECG signal analysis.

      • Callicarpa rubella for. angustata C. P’ei shows anti-inflammatory effects by blocking p38 activation in murine macrophages

        조영창,천재희,조사연 한국구조생물학회 2014 Biodesign Vol.2 No.3

        Many attempts have been made to develop anti-inflammatory drugs by using natural products because natural productshave been traditionally used to cure severe inflammatory diseases. In this study, we investigated the anti-inflammatoryeffects and the molecular mechanisms underlying these effects in murine macrophages by using an ethanol extract ofCallicarpa rubella for. angustata C. P`ei (ECR). We found that ECR treatment significantly inhibited lipopolysaccharide(LPS)-stimulated nitric oxide (NO) production in macrophages and downregulated mRNA and protein expression levelsof inducible nitric oxide synthase (iNOS). However, ECR did not modulate cyclooxygenase-2 (COX-2) expression at bothmRNA and protein levels. Among the inflammatory cytokines, interleukin (IL)-1β production was reduced by ECR treatmentwhereas the level of IL-6 and tumor necrosis factor (TNF)-α was independent of ECR treatment. Western blot analysisrevealed that ECR notably reduced the phosphorylation of p38 but had no effect on the activation of nuclear factor kappaB (NF-κB) and other mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase (ERK) andc-Jun N-terminal kinase (JNK). These results imply that ECR exerts anti-inflammatory effects via selective inhibition of theproduction of inflammatory mediators including iNOS and IL-1β by inactivating p38.

      • 컴퓨터 비젼을 이용한 모니터 화면검사 시스템의 개발

        조영창 경운대학교 산업기술연구소 2000 産業技術硏究論文誌 Vol.3 No.1(A)

        There are many monitor manufacturing firms not equipped with automatic checking system in their final process. And the check is based on the human perception, so the automatic checking system is needed for the consistency and the accuracy of the checking process to elevate the productivity and the quality. As the performance of computer systems and the vision systems has been increased, the cost for the system is reduced and their applicable algorithms have been developed. In this study we develop monitor checking system which is low-cost, fast, and easy to adopt int he small-scaled manufacturing firms. The system is based on the computer vision techniques, and is equipped with the GUI interface and checking functions. Monitor checking system developed in this study can be used in the final checking process thereby we expect the effects both on the efficiency of production and on the reduction of the cost for the facility investments.

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