• 기록학연구
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• 제46호
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• pp.189-231
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• 2015

본 연구는 국회의 설명책임성을 보장하고 국회와 관련된 당대의 역사적 사건을 기록화하기 위한 평가방법론을 마련하는 것이 목적이다. 국회의 처분지침(records schedule)인 현행 국회기록분류기준표에 따른 평가는 국회의 활동을 포괄적으로 기록화하는 것이 불가능하다. 특히 국회기록물분류기준표는 국회사무처 등 4개 소속기관 중심으로 분류체계가 설계되어 있어, 국회의원실을 포함하여 국회가 관계를 맺고 있는 다양한 외부기관과 영역의 산출물을 기록화하는 데에 근본적인 한계가 있다. 결국 국회에서 발생하는 다양한 이슈와 역사적 사건들을 현행 평가 체제하에서는 포괄적으로 기록화하기 어렵다. 이에 본 연구는 첫 번째 단계로 기관기능분석(institutional functional analysis)을 통해 기관의 설명책임성을 담보하는 평가 방법론을 제시하였다. 그러나 기관기능분석 방법론만으로 국회의 본질적 기능과 관련하여 진행되고 있는 당대의 역사적 사건 또는 사회적 사건을 총체적으로 조직화하는 것은 어렵다. 이에 기관기능분석방법론에 따라 도출된 국회의 기능 영역으로부터 당대의 사회 현상 및 역사적 사건과 관련된 기록을 거시적인 관점에서 선별하는 평가 방법론을 수립하는 주제 중심의 기록화 방법론을 설계함으로써 실제 국회에 적용 가능한 기록화 전략 모형을 설계하였다.

• 대한약침학회지
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• 제23권1호
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• pp.8-17
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• 2020

Aim of the study: The objective of this systematic review is to critically evaluate the evidence of the effectiveness and safety of external application of herbal medicines (EAHM) for acne vurgalis (AV). Methods: English, Chinese and Korean language databases were searched up to May 2018. Randomized clinical trials (RCTs) that reported the effects of EAHM for AV were included and analysed. Results: A total of 10 randomized trials with 656 AV patients were identified. A meta-analysis of two RCTs indicated that EAHM had a significant effect on improving primary outcome 'global assessment' compared with placebo (mean difference (MD) = -2.62, confidence interval (CI) = -4.84 to -0.40, p = 0.02). Furthermore, data extracted from two RCTs showed that EAHM significantly reduce primary outcome 'inflammatory lesion count of acne' (MD = -1.25, CI = -1.68 to -0.83, p < 0.00001) and 'non-inflammatory lesion count of acne' (MD = -1.32, CI = -1.75 to -0.90, p < 0.00001). No significant difference was observed between groups in secondary outcome 'sebum of skin' (MD = -0.21, CI = -0.53 to 0.11, p = 0.20) and 'patient-reported changes in symptom' (relative risk (RR) = 2.56, CI = 0.43 to 15.22, p = 0.30). No severe adverse events (AEs) were found and no treatment was stopped due to AEs of EAHM. Conclusions: EAHM seems to have affirmative effects, but quality of evidence, and non-standardized use of EAHM make our conclusion weak. Our suggestion is rigorously designed RCTs and standardization of EAHM are required in the future.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권11호
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• pp.5642-5670
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• 2017

Antivirus is an important issue to the security of virtual machine (VM). According to where the antivirus system resides, the existing approaches can be categorized into three classes: internal approach, external approach and hybrid approach. However, for the internal approach, it is susceptible to attacks and may cause antivirus storm and rollback vulnerability problems. On the other hand, for the external approach, the antivirus systems built upon virtual machine introspection (VMI) technology cannot find and prohibit viruses promptly. Although the hybrid approach performs virus scanning out of the virtual machine, it is still vulnerable to attacks since it completely depends on the agent and hooks to deliver events in the guest operating system. To solve the aforementioned problems, based on in-memory signature scanning, we propose an agentless runtime antivirus system VirtAV, which scans each piece of binary codes to execute in guest VMs on the VMM side to detect and prevent viruses. As an external approach, VirtAV does not rely on any hooks or agents in the guest OS, and exposes no attack surface to the outside world, so it guarantees the security of itself to the greatest extent. In addition, it solves the antivirus storm problem and the rollback vulnerability problem in virtualization environment. We implemented a prototype based on Qemu/KVM hypervisor and ClamAV antivirus engine. Experimental results demonstrate that VirtAV is able to detect both user-level and kernel-level virus programs inside Windows and Linux guest, no matter whether they are packed or not. From the performance aspect, the overhead of VirtAV on guest performance is acceptable. Especially, VirtAV has little impact on the performance of common desktop applications, such as video playing, web browsing and Microsoft Office series.

• 한국콘텐츠학회논문지
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• 제15권11호
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• pp.534-549
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• 2015

본 연구는 2014 오송 국제바이오 산업엑스포에 참여한 자원봉사자를 대상으로 하여 자원봉사자의 참여동기와 참여만족, 교육훈련이 참여동기와 참여만족 간에 조절효과가 있는지를 분석하여 향후 개최될 메가이벤트를 성공적으로 치러낼 수 있는 시사점을 제공하는 것이 본 연구의 목적이다. 연구결과 첫째, 참여동기 중 내적보상은 자원봉사 참여만족 6개 구성요인에 모두 통계적으로 유의한 영향을 미치는 것으로 나타났다. 둘째, 참여동기 중 외적보상은 자원봉사 참여만족 중 자기성장만족과 교류만족을 제외한 4개 구성요인에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 셋째, 내적보상과 행사업무만족 간에 교육훈련이 조절역할을 하는 것으로 나타났다. 넷째, 외적보상과 교류만족 간에 교육훈련이 조절역할을 하는 것으로 나타났다.

• Journal of Chest Surgery
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• 제13권3호
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• pp.219-228
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• 1980

The heart block and bradyarrhythmia with or without Stokes-Adams attacks are serious, usually terminal events and the immediate mortality is very high. Stimulation with an artificial pacemaker is now an accepted form of treatment in cases of Stokes-Adams syndrome in which medication in unable to produce any lasting improvement. Permanent pacemaker therapy is indicated in these circumstances. The purpose of this report is to describe the successful use of pacemaker in 3 cases of Stokes-Adams syndromes and a case of sinoatrial block with bradyarrhythmia at the Department of Thoracic and Cardiovascular Surgery, Kyungpook National University School of Medicine. Electrode catheter was passed through the right external jugular vein and attached to the endocardial surface of the right ventricle. In case 1, fixed type generator was used at first and for the case 2, 3, 4, and case 1 at second, demand type generators were used. The bipolar electrode catheters were used for the three cases and unipolar electrode catheter for case 4. The results of immediate and late period were satisfactory.

• Journal of Information Processing Systems
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• 제13권3호
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• pp.590-598
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• 2017

Recently, there has been an increase in the number of hazardous events, such as fire accidents. Monitoring systems that rely on human resources depend on people; hence, the performance of the system can be degraded when human operators are fatigued or tensed. It is easy to use fire alarm boxes; however, these are frequently activated by external factors such as temperature and humidity. We propose an approach to fire detection using an image processing technique. In this paper, we propose a fire detection method using multichannel information and gray level co-occurrence matrix (GLCM) image features. Multi-channels consist of RGB, YCbCr, and HSV color spaces. The flame color and smoke texture information are used to detect the flames and smoke, respectively. The experimental results show that the proposed method performs better than the previous method in terms of accuracy of fire detection.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2014년도 제49회 KOSCO SYMPOSIUM 초록집
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• pp.277-280
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• 2014

Global energy demand has continued to rise due to population increase and economic development. National governments and international bodies try to seek the ways to reduce the demand growth. Energy Technology Perspectives (ETP) have provided the current status of energy system, technology developments and external events that have changed ETP scenario since 2006. The status and prospects for key energy technologies of transport sector are presented. Technology portfolio for the transport sector should be needed to meet very low CO2 targets. The portfolio includes improved fuel economy of current internal combustion engine vehicles, advanced technologies such as electric and fuel-cell vehicles, advanced biofuels and demand-side management.

• 한국자동차공학회논문집
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• 제10권3호
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• pp.85-92
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• 2002

This paper presents the effects of design and operating parameters to meet the static and dynamic performances of the electro-mechanical valve(EMV) actuator which can provide more flexible controllability of valve events compared to conventional variable valve actuation devices. The model of the EMV system was also set up and applied to identify the dynamic behavior of the system. And the effects of external disturbances were also investigated such as cylinder pressure, armature neutral position and current supplying time effects and so on. Experiments were carried out to verify the model using the prototype actuator on test bench, it was found that there is a relatively good agreement between experimental data and modeling results. Also, the actuators meet the general engine speed range (over 6000rpm) and the variable valve event control for various VVT effects.

• Nuclear Engineering and Technology
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• 제38권5호
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• pp.443-448
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• 2006

The OPAL (Open Pool Australian Light-water) reactor is currently being constructed to replace HIFAR (HI-Flux Australian Reactor, commissioned in 1958) in mid-2006. HIFAR will be shutdown for decommissioning after several months of simultaneous operation with OPAL for smooth transition of operating systems and business. OPAL is a 20 MW multipurpose research reactor for radioisotope production, irradiation services and neutron beam research. The OPAL reactor uses low enriched uranium fuel in a compact core, cooled by light water and moderated by heavy water, yielding maximum thermal flux not less than $4{\times}10^{14}ncm^{-2}s^{-1}$. The reactor containment building is constructed of reinforced concrete and has been designed to protect the reactor from all external events such as seismic occurrences and impact from a hypothetical light aircraft crash. This paper describes the main elements of the reactor design and its applications.

• 한국컴퓨터산업학회논문지
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• 제4권4호
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• pp.449-454
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• 2003

본 논문에서는 USB 인터페이스를 이용한 GU 환경의 제어기를 구현해 보였다. 특히, 프론트 판넬에 취부된 외부 USB 포트의 성능 검사는 비쥬얼 C++ 검사 프로그램을 사용하여 자동적으로 실행되도록 하였다. 성능검사 프로그램은 실험 결과를 가청적 또는 가시적으로 표시함으로서 작업자의 조작을 최소화하고, 생산성을 최대화할 수 있도록 하였다. GUI 환경의 제어기는 검사 프로그램을 사용하여 표준방식 키보드, 트랙볼. 엔코더, 아날로그 퍼텐시오미터, 2개의 디스플레이장치 및 터치스크린을 제어 할 수 있다.