• 한방안이비인후피부과학회지
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• 제14권2호
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• pp.1-8
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• 2001

We know paranasal sinusitis is one of the most common disease in the field of otolaryngology. Especially in the case of chronic paranasal sinusitis, patient is sufferred from recurrence. So we prescribed Bojungikgitang(補中益氣湯) to the patients who were suffered from chronic paranasal sinusitis, and we witness some noticeable improvement. Here are the findings of my experience 1. The addition and subtraction temperament drugs of Bojungikgitang(補中益氣湯加減方) are effective to the patient of chronic and feeble paranasal sinusitis by the effect of removing wind(祛風), unnecessary metabolite(祛痰), and draining pus(排膿) and strengthening digestive organs(健碑) and enriching the lung yin(益肺陰) and alleviation of pain(止痛). 2. In the symptom of chronic paranasal siunutitis, nasal obstruction, postnasal drip, sputum, headache were quick to disappear, and dysosmia, internasal polyp, etc got better slower. 3. The most quick improvement appeared within two weeks and most symptoms improved within one month, and disappeared within two months.

• 한국생산제조학회지
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• 제19권4호
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• pp.548-552
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• 2010

The air suction filter of the power plant decrease the dust and impurities of suction air that reduce the life and efficiency of the boiler. The suction efficiency of the air filter falls with the dust and impurities when the time of use comes to be long. Therefore, the various contaminant of the filter must remove periodically. This paper presents a developed quick exhaust valve to use in the thermo-electric power plant. to removing contaminants on the filter, the blowing is done shortly by air pressure. The Air flowed out to the out side from the inside of the filter. The performance test of the developed valve is done by making a test-bench according to JIS and KS standards. The efficiency is found higher than the existing related valve.

• 한국위성정보통신학회논문지
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• 제11권2호
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• pp.29-35
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• 2016

High-availability seamless redundancy (HSR) 은 두 개의 복제된 프레임을 각각의 경로로 전송하여 거의'0'시간에 고장을 복구하는 실시간 고장 허용 프로토콜이다. 그러므로 HSR은 스마트 그리드 통신과 같은 첨단 실시간 네트워크에 사용이 가능하다. 그러나 HSR 프로토콜은 고장 복구를 위해 생성되는 불필요한 트래픽이 목적지 노드가 포함되지 않은 하부 네트워크에도 지속적으로 순환하는 주요 단점이 있으며, 이는 네트워크의 트래픽 성능을 저하시키고, 네트워크의 활용 자원을 감소시키는 원인이 된다. 이러한 단점을 보완하기 위해, 효율적인 두 가지 알고리즘, Quick Removing (QR) 과 Port Locking (PL) 이 발표된 바 있다. 본 논문은 QR과 PL을 결합한 새로운 알고리즘, QRPL의 구현 가능성 및 그 성능을 수학적으로 해석 제시하고 시뮬레이션으로 확인하였다. 그 결과 다수의 하위 ring이 연결된 HSR 네트워크에서 유니캐스트 트래픽을 적용시, 표준 HSR, QR, 또는 PL 알고리즘을 개별로 사용하는 것보다, QRPL 알고리즘을 사용하는 경우 성능이 크게 향상됨을 확인하였다.

• Journal of Communications and Networks
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• 제14권6호
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• pp.653-661
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• 2012

High-availability seamless redundancy (HSR) is a redundancy protocol for Ethernet networks that provides two frame copies for each frame sent. Each copy will pass through separate physical paths, pursuing zero fault recovery time. This means that even in the case of a node or a link failure, there is no stoppage of network operations whatsoever. HSR is a potential candidate for the communications of a smart grid, but its main drawback is the unnecessary traffic created due to the duplicated copies of each sent frame, which are generated and circulated inside the network. This downside will degrade network performance and might cause network congestion or even stoppage. In this paper, we present two approaches to solve the above-mentioned problem. The first approach is called quick removing (QR), and is suited to ring or connected ring topologies. The idea is to remove the duplicated frame copies from the network when all the nodes have received one copy of the sent frame and begin to receive the second copy. Therefore, the forwarding of those frame copies until they reach the source node, as occurs in standard HSR, is not needed in QR. Our example shows a traffic reduction of 37.5%compared to the standard HSR protocol. The second approach is called the virtual ring (VRing), which divides any closed-loop HSR network into several VRings. Each VRing will circulate the traffic of a corresponding group of nodes within it. Therefore, the traffic in that group will not affect any of the other network links or nodes, which results in an enhancement of traffic performance. For our sample network, the VRing approach shows a network traffic reduction in the range of 67.7 to 48.4%in a healthy network case and 89.7 to 44.8%in a faulty network case, compared to standard HSR.

• 한방안이비인후피부과학회지
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• 제14권1호
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• pp.66-75
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• 2001

Acne is a chronic, inflammatory disorder that mainly affects teenagers and young adults. The disease has many causes, blocking hair follicle or sebaceous gland. Acne is not life threatening, but quality of a patient is compromised. Therefore, the patient needs an active treatment. With this in mind, I witnessed some noticeable improvement among the patients by prescribing Myunposan(面疱散). Here are the findings of my experience. 1. Out of acne patients who visited Oriental Medicine Hospital of Kyung-Won University(暻園大學校서울韓方病院) during September 2000 - December 2000, 8 patients whose prognosis is dramatic were subjects. 2. Myunposan(面疱散) deems effective in removing wind(祛風), unnecessary metabolite(祛痰), heat(淸熱), and draining pus(排膿), and preventing evil effects(解毒). 3. In the case of those 8 success stories as a result of taking Myunposan(面疱散), in the order of redness, pain, iching, and fever, symptoms were quick to disappear, and papula, pustula, etc got better albeit slower. 4. Depending on general symptoms, oriental medicine and acupuncture treatment on top of taking Myunposan(面疱散), symptoms were even quicker to go away and improved.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제18권2호
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• pp.143-156
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• 2014

This paper aims to give a quick view on denoising without comprehensive details. Denoising can be understood as removing unwanted parts in signals and images. Noise incorporates intrinsic random fluctuations in the data. Since noise is ubiquitous, denoising methods and models are diverse. Starting from what noise means, we briefly discuss a denoising model as maximum a posteriori estimation and relate it with a variational form or energy model. After that we present a few major branches in image and signal processing; filtering, shrinkage or thresholding, regularization and data adapted methods, although it may not be a general way of classifying denoising methods.

• 로봇학회논문지
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• 제15권3호
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• pp.248-255
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• 2020

This paper introduces a Feedback Linearization (FL) controller to eliminate the gyro effect on a quadrotor UAV. In order to control the attitude of the quadrotor, the second model equation was differentiated to the 4-th order to induce the control input to be revealed, and then a new control input was derived based on the attitude transformation equation with a gyro effect. For the initial quick posture control of the quadrotor, the existing yaw control was replaced with a separate controller. The simulation was conducted with an experiment in which FL control to remove the gyro effect was applied to the quadrotor and an experiment without removing the gyro effect, from the experimental results, the maximum error seen in each axial direction of the quadrotor was x = 0.22 m, y = 0.20 m, z = 0.16 m. Through the proposed method, the effect of the FL controller for controlling the gyro effect of the quadrotor was confirmed.

• 한국수산과학회지
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• 제53권3호
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• pp.326-333
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• 2020

To develop a value-added individually quick frozen (IQF) intermediate product from cultured sea mussel Mytilus edulis, we prepared IQF half-shelled roasted sea mussels (HRM) and IQF half-shelled boiled sea mussels (HBM). The processing conditions and quality metrics of the mussels were examined. The HRM and HBM were produced by washing and removing the byssus of raw sea mussels, followed by electric roasting or boiling. The roasted or boiled sea mussels were half-shelled, lightly washed with 3% saline water, rapidly frozen for 2 hours at -35℃, glazed, and packaged with a plastic film bag. The HRM and HBM had volatile basic nitrogen contents of 11.5 and 12.6 mg/100 g, and amino nitrogen contents of 607.9 and 534.2 mg/100 g, respectively. The HRM and HBM had hardness values of 4.31 and 2.99 kg/㎠, shearing force values of 992.2 and 507.7 g, free drip values of 8.9% and 10.2%, and expressible drip values of 7.0% and 8.1%, respectively. The free amino acid contents of the HRM and HBM were 763.1 and 560.7 mg/100 g, respectively. These results demonstrate that HRM have superior qualities compared to HBM and can serve as high-end shellfish when cooked.

• 한국항해학회지
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• 제22권4호
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• pp.59-67
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• 1998

A quick and automatic detection with no harm to the goods is very important task for improving quality control, process control and labour reduction. In real fields of industry, defect detection is mostly accomplished by skillful workers. A narrow band eliminating spatial filter having characteristics of removing the specified spatial frequency is developed by the author, and it is proved that the filter has an excellent ability for on-line and real time detection of surface defect. By the way,. this spatial filter shows a ripple phenominum in filtering characteristics. So, it is necessary to remove the ripple component for the improvement of filter gain, moreover efficiency of defect detection. The spatial filtering method has a remarkable feature which means that it is able to set up weighting function for its own sake, and which can to obtain the best signal relating to the purpose of the measurement. Hence, having an eye on such feature, theoretical analysis is carried out at first for optimal design of narrow band eliminating spatial filter, and secondly, on the basis of above results spatial filter is manufactured, and finally advanced effectiveness of spatial filter is evaluated experimentally.

• 헤리티지:역사와 과학
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• 제50권3호
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• pp.88-109
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• 2017

현재 비가역성 재료로 알려져 있는 Paraloid b-72의 제거방법으로는 대상재질의 종류에 따라 차이는 있지만 유기용매 및 가열 방식을 이용한 방법들이 일반적으로 사용되었으나, 흙벽화에 적용시키는 문제는 처리방법의 한계성과 손상위험 때문에 지금까지 적용되지 못하였고, 제거 효율 또한 검증되지 못하였다. 이에 따라 본 연구에서는 흙벽화에 사용된 Paraloid b-72를 가장 안전하게 제거할 수 있는 방법을 모색하였으며, 가장 효율적일 것으로 판단되는 습포방식을 적용하여 실험하였다. Paraloid b-72에 대한 용해성이 확인된 용해제들을 흡착제인 활성탄소섬유와 Methyl Cellulose에 적용시켜 동일한 크기와 조건으로 제작된 흙벽화 시료표면에 일정시간 흡착용출 시킨 후 제거하여 안정성과 제거효과를 비교하였으며, 이를 통해 과거 Paraloid b-72로 보존처리 되었던 금산사 미륵전 벽화 및 다른 벽화 문화재에 대한 적용가능성을 확인하고자 하였다. 실험결과, 흡착제인 활성탄소섬유와 Xylene을 단독 또는 빠른 기화성을 가진 다른 용해제와 혼합하여 적용하였을 때 효과적이고, 그 중 Acetone:Xylene(1:1wt%)이 가장 안정적임을 알 수 있었다. 이 결과는 향후 진행될 수 있는 금산사 미륵전 벽화의 Paraloid b-72 제거와 그밖의 다른 벽화 문화재의 원형복원을 위한 기초자료로 활용될 수 있을 것으로 본다.