• 한국산학기술학회논문지
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• 제11권12호
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• pp.5097-5106
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• 2010

보증 시스템의 '학습'모듈과 '우선순위' 등을 포함된 두 가지 기능을 이용하여 의사결정시스템을 개발을 할 수 있다. 본 논문은 품질보증 시스템과 신경망 학습기능을 이용한 위험분석 방법을 보여준다. 분석 방법은 신경 네트워크뿐만 아니라, 계층 분석방법을 사용하여 경고 기준에 우선순위를 할당을 위해 적용되었다. 따라서 보증 시스템, AHP 모듈 및 신경 네트워크 시스템의 세 가지 구성 요소와 함께 통합 시스템 구축을 가능하게 한다. 사례 연구에 제공되는 자동차 회사에서 사용되는 보증 시스템 내에 많은 요인을 이용해 정확한 판단의 "경고 / 검출"을 향상시키고자 한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1355-1360
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• 2005

In this paper, we approach the problem of image filter design automation using a kind of intrinsic evolvable hardware architecture. For the purpose of implementing the intrinsic evolution process in a common FPGA chip and evolving a complicated digital circuit system-image filter, the design automation system employs the reconfigurable circuit architecture as the reconfigurable component of the EHW. The reconfigurable circuit architecture is inspired by the Cartesian Genetic Programming and the functional level evolution. To increase the speed of the hardware evolution, the whole evolvable hardware system which consists of evolution algorithm unit, fitness value calculation unit and reconfigurable unit are implemented by a commercial FPGA chip. The Celoxica RC1000 card which is fitted with a Xilinx Virtex xcv2000E FPGA chip is employed as the experiment platform. As the result, we conclude the terms of the synthesis report of the image filter design automation system and hardware evolution speed in the Celoxica RC1000 card. The evolved image filter is also compared with the conventional image filter form the point of filtered image quality.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.327-333
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• 2020

Corporate social responsibility is an inevitable trend in the global context. It is the responsibility of the organizations to the community and society to ensure the fairness of the interests of stakeholders. This is an issue that deserves attention, not in the national or regional level, but as a global issue. The purpose of article is to examine the effect of corporate governance on corporate social responsibility disclosure of 155 samples of 31 Vietnamese commercial banks from 2015 to 2019. The data of this study is employing time-series data and used the ordinary least squares to test the model. The results show that there are three factors that positively affect corporate social responsibility disclosure, namely, board size, foreign members of board, and audit committee. Thereby, the article proposes that board of director in Vietnamese commercial banks needs to raise awareness about corporate social responsibility, and the Central bank of Vietnam should monitor the disclosure of information regularly with severe sanctions on commercial banks that do not comply with the regulations of corporate social responsibility disclosure. This contributes to improving the information quality of the banking sector to meet the trend of international economic integration.

• 센서학회지
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• 제30권6호
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• pp.451-455
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• 2021

Porous copper bromide (CuBr) films are highly advantageous for detecting ammonia (NH₃). The fabrication of porous CuBr films requires complex high-temperature processes or multistep processes. Herein, we report the uncomplicated preparation of porous CuBr films by a spin-coating method and the films' excellent NH₃ sensing properties. The porous films were prepared by spin-coating 100, 150, and 200 mM CuBr solutions, and then dried in a vacuum oven for 2 h. All the films showed a high NH₃ response; in particular, the film prepared using a 100 mM CuBr solution showed an extremely high response (resistance ratio = 852) to 5 ppm NH₃. The film also showed fast response and recovery times, 272 s and 10 s respectively, even at room temperature. The outstanding NH₃ sensing characteristics were explained in relation to the porosity and thickness of the prepared films. The high-performance NH₃ sensors used in this study can be used for both indoor air quality and environmental monitoring applications.

• 한국컴퓨터정보학회논문지
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• 제19권12호
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• pp.369-384
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• 2014

우리나라 영재교육은 2002년 시작된 이후 이제 교육지원체계가 확립되었고, 양적 측면에서 충분한 성장을 이루었다. 반면에 교육의 질적인 측면에서는 미흡한 점이 있다는 보고가 많다. 즉, 대부분의 영재교육이 선행학습에 의한 단순 지식확대 위주로 이루어진다는 것이다. 영재 교육의 질을 높이기 위해서는 간학문적 원리와 현상을 문제해결에 적용할 수 있는 비판적 사고력 및 창의력 배양 교육이 되어야 한다. 이 연구에서는 통합교육 개념에 근거하여 AND/OR/XOR 등의 기본 논리 연산이 컴퓨터의 세포 역할을 하게 되는 과정을 탐구하는 융합형 교수 학습 자료를 설계하고 개발하였다. 설문 조사 결과 기존의 다른 학습 주제보다 학생들의 만족도(유익성, 이해도, 흥미도)가 크게 높은 것으로 평가되어 설계 취지에 부합된 것으로 나타났다.

• 한국언론정보학보
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• 제47권
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• pp.23-49
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• 2009

본 연구의 목적은 매스미디어의 위기 타개 및 개혁을 위한 규범이론의 내용과 범위를 제안하는 것이다. 이를 위하여, 허친스 보고서와 함께 허친스 보고서를 사상적 토대로 한 기존의 사회적 책임이론 관련 논의를 검토하여 한계점 및 시사점을 살펴보았다. 허친스 보고서는 매스미디어의 책임과 어카운터빌리티를 도덕적 법적 의무로 제시하였으며 미디어와 시민의 상호 협력관계 속에서 적극적 자유 이행이 가능하다고 보았다. 하지만, 사회적 책임이론에서 미디어의 책임은 어카운터빌리티에 관한 논의가 결여된 채, '기능', '자율적 윤리', '자율규제'를 중심으로 논의되어 소극적 자유로서의 한계를 노출해왔다. 따라서 자율규제나 기능주의적 접근에 의한 미디어의 사회적 책임 논의를 미디어 어카운터빌리티를 기반으로 한 적극적 자유 개념으로 확장할 필요가 있다. 그리고 사회적 토론과 합의를 거쳐 사회적 책임의 내용과 범위를 도출해 내야 한다. 허친스 보고서가 권고한 미디어카운터빌리티는 매스미디어가 시민사회와의 상호 커뮤니케이션을 통해서 '사회적 자율규제'를 실천하기 위한 민주적 방안으로서, 그리고 사회적 책임이론에 내재되어 있는 한계 극복을 위해 유용하다. 따라서 다원적 미디어 시스템 하에서 미디어 환경 개선과 신뢰 회복을 도모하기 위해서는 각각의 미디어 특성에 걸맞은 사회적 책임 그리고 어카운터빌리티의 내용 및 범위를 명확히 하기 위해 논의를 확장해야 한다.

• 한국산학기술학회논문지
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• 제18권11호
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• pp.637-643
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• 2017

본 연구는 기업설명회(Investor Relations; IR) 개최기업의 회계이익의 질을 검증하였다. 이를 위해 회계이익-과세소득 차이 변동성(Book-Tax Difference Variability) 정보를 회계이익의 질 대리변수(proxy)로 활용하여 실증분석을 실시하였다. 연구표본은 2011년부터 2016년까지의 12월 결산 유가증권 상장기업 중 금융업을 제외한 2,106개 기업연도이다. 실증분석 결과는 다음과 같다. 기업설명회 개최여부 및 개최횟수는 모두 회계이익-과세소득 차이 변동성과 음(-)의 관련성을 나타냈다. 또한 연구결과의강건성을 위해 기업설명회를 개최한 연구표본만을 대상으로 한 추가분석에서도 기업설명회 개최여부 및 개최횟수는 회계이익-과세소득 차이 변동성과 음(-)의 관련성을 나타냈다. 따라서 본 연구에 의하면 기업설명회를 개최하거나 더 자주 개최하는 기업일수록 회계이익의 질이 높을 것으로 기대할 수 있다. 본 연구는 기업설명회 개최기업의 회계이익의 질을 회계이익-과세소득 차이 변동성 정보를 통해 검증함으로써, 기업설명회 관련 선행연구를 확장하였다. 또한 본 연구가 건전한 자본시장의 발전에 도움이 되기를 기대한다.

• 한국의료질향상학회지
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• 제22권2호
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• pp.43-73
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• 2016

Purpose: The aims of this study were to assess the presence of core patient safety practices in Korean hospitals and assess the differences in reporting and learning systems of patient safety, infrastructure, and safe practices by hospital characteristics. Methods: The authors developed a questionnaire including 39 items of patient safety staffing, health information system, reporting system, and event-specific prevention practices. The survey was conducted online or e-mail with 407 tertiary, general and specialty hospitals. Results: About 90% of hospitals answered the self-reporting system of patient safety related events is established. More than 90% of hospitals applied incidence monitoring or root cause analysis on healthcare-associated infection, in-facility pressure ulcers and falls, but only 60% did on surgery/procedure related events. More than 50% of the hospitals did not adopted present on admission (POA) indicators. One hundred (80.0%) hospitals had a department of patient safety and/or quality and only 52.8% of hospitals had a patient safety officer (PSO). While 82.4% of hospitals used electronic medical records (EMRs), only 53% of these hospitals adopted clinical decision support function. Infrastructure for patient safety except EMRs was well established in training, high-level and large hospitals. Most hospitals implemented prevention practices of adverse drug events, in-facility pressure ulcers and falls (94.4-100.0%). But prevention practices of surgery/procedure related events had relatively low adoption rate (59.2-92.8%). Majority of prevention practices for patient safety events were also implemented with a relatively modest increase in resources allocated. Conclusion: The hospital-based reporting and learning system, EMRs, and core evidence-based prevention practices were implemented well in high-level and large hospitals. But POA indicator and PSO were not adopted in more than half of surveyed hospitals and implementation of prevention practices for specific event had low. To support and monitor progress in hospital's patient safety effort, national-level safety practices set is needed.

• Journal of Communications and Networks
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• 제9권4호
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• pp.446-456
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• 2007

Increased access to broadband networks has led to a fast-growing demand for voice and video over IP(VVoIP) applications such as Internet telephony(VoIP), videoconferencing, and IP television(IPTV). For pro-active troubleshooting of VVoIP performance bottlenecks that manifest to end-users as performance impairments such as video frame freezing and voice dropouts, network operators cannot rely on actual end-users to report their subjective quality of experience(QoE). Hence, automated and objective techniques that provide real-time or online VVoIP QoE estimates are vital. Objective techniques developed to-date estimate VVoIP QoE by performing frame-to-frame peak-signal-to-noise ratio(PSNR) comparisons of the original video sequence and the reconstructed video sequence obtained from the sender-side and receiver-side, respectively. Since processing such video sequences is time consuming and computationally intensive, existing objective techniques cannot provide online VVoIP QoE. In this paper, we present a novel framework that can provide online estimates of VVoIP QoE on network paths without end-user involvement and without requiring any video sequences. The framework features the "GAP-model", which is an offline model of QoE expressed as a function of measurable network factors such as bandwidth, delay, jitter, and loss. Using the GAP-model, our online framework can produce VVoIP QoE estimates in terms of "Good", "Acceptable", or "Poor"(GAP) grades of perceptual quality solely from the online measured network conditions.

• 대한통합의학회지
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• 제11권2호
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• pp.231-242
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• 2023

Purpose : This study aimed to identify ways to improve the quality of physical therapy research and ultimately review the current situation to improve evidence-based decision-making in physical therapy. Methods : For better evidence-based decision-making in physical therapy, researchers should review the quality assessment of articles in more detail and report their findings for valid and appropriate level of evidence and strength of recommendations. The level of evidence affects how well the findings are derived from well-designed literature. The evaluation of the evidence focuses primarily on the study design and the degree of bias that may compromise the validity of the findings. The final recommendation is based on a combination of the study design and literature quality. To uncover gems of information in each paper, a risk of bias assessment should be performed after the literature has been initially selected. Results : Researchers should consider the complexity of the intervention, appropriate grouping, and calculation of effect sizes for the intervention. Researchers conducting systematic reviews should provide a detailed description of the quality assessment performed and present a detailed analysis of their interpretation of the results. The results of systematic reviews and meta-analyses should be interpreted with caution and include a risk of bias assessment. Guidelines for the level of evidence and strength of recommendations should be developed and utilized more broadly to improve reporting practices in physical therapy. Conclusion : Researchers should be knowledgeable about the strengths and limitations of each study design and methodology. In the future, researchers will also need to improve their ability to critically evaluate their findings, given the potential for their results to influence clinical practice.