• 대한불안의학회지
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• 제3권2호
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• pp.77-90
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• 2007

In this special article, we presented the organization of the work group, basic principles of the algorithm, future plan and methods for developing a treatment algorithm for panic disorder in Korea. The psychiatrist work group from the Korean Association of Anxiety Disorders began to develop a treatment algorithm designed to improve the management of Korean patients with panic disorder by incorporating better evaluation techniques and treatment procedures. We have reviewed the treatment guidelines and algorithms for panic disorder published thus far, including the Practice Guideline for the Treatment of Patients with Panic Disorder established by the American Psychiatric Association, the Management of Anxiety (Panic Disorder, with or without Agoraphobia, and Generalized Anxiety Disorder) in Adults in Primary, Secondary and Community Care established by the National Institute for Clinical Excellence, and the Clinical Practice Guidelines established by the Canadian Psychiatric Association. We developed the basic materials to be used in the treatment algorithm for the management of panic disorder in Korea. Therefore, in this special article, we intro-duce the goal of the algorithm and the details of the algorithm development.

• 대한두개안면성형외과학회지
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• 제12권1호
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• pp.1-5
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• 2011

Purpose: The management of frontal sinus fractures and frontal sinus outflow tract (=FSOT) injuries is controversial. Traditional treatments include frontal sinus obliteration with a variety of material grafts, which all employ complicated algorithms for treatment planning. A simplified algorithm aiming for frontal sinus ventilation, however, can be achieved through the advanced technology of image guided endoscopic surgery and instruments. The authors explain this simplified treatment algorithm of frontal sinus fractures. Methods: The authors reviewed articles on the management of frontal sinus fractures. Results: Complicated treatment planning algorithms of frontal sinus fractures aiming for obliteration were replaced with a simplified algorithm aiming for ventilation of the frontal sinus. Conclusion: The authors suggest that a simplified algorithm can replace the complicated algorithms in selective cases.

• 대한방사선치료학회지
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• 제24권2호
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• pp.137-147
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• 2012

목 적: 알고리즘에 따른 치료계획의 영향을 분석하고 실제 치료계획을 수립할 때 고려사항을 적용하고, 나아가 최선의 치료계획을 수립하는 프로토콜을 제시하고자 한다. 대상 및 방법: 치료계획 시스템은 이클립스 10.0 (Eclipse 10.0, Varian, USA)이다. 선량계산의 알고리즘은 PBC (Pencil Beam Convolution)와 AAA (Anisotropic Analytical Algorithm)을 각각 적용하였고, 세기 조절 방사선 치료(IMRT)를 위한 최적화(Optimization) 알고리즘은 DVO (Dose Volume Optimizer 10.0.28), VMAT을 위한 최적화 알고리즘은 PRO II (Progressive Resolution Optimizer V 8.9.17)와 PRO III (Progressive Resolution Optimizer V 10.0.28)을 사용하였다. 실험을 위한 팬텀은 치료계획시스템에서 가상으로 만들었으며, $30{\times}30{\times}30$ cm의 규격에 밀도가 균일한 것(HU: 0)과 중간에 공기(HU: -1,000)로 가정되는 물질이 삽입한 된 비균질 팬텀으로 설정하였다. 실험은 먼저 팬텀(Phantom) 계획을 실시하여 일반적인 치료계획의 특징을 분석하고 그 내용을 토대로 실제 임상적용 할 치료계획을 수립하였다. 결 과: 균일한 밀도 팬텀에서 6 MV, 10 cm PDD (Percentage Depth Dose)는 PBC와 AAA는 모두 65.2%로 유사한 값을 나타냈지만, 비균질 팬텀에서 PDD는 저밀도 물질을 만나기 전까진 유사한 PDD 값을 보이다가 공기 영역에서 다른 선량곡선을 보여주고, 투과한 후에는 PDD 10 cm은 각각 75%, 73%이었다. 동일한 MU의 3차원 치료계획에서 보면, AAA 치료계획이 폐가 포함된 영역에서 저 선량으로 나타났다. 기관지와 폐의 영역이 포함된 경추 치료 환자의 2차원 대향 2문조사 치료계획을 15 MV을 이용하여 설계하였을 때, Conformity Index (ICRU 62)는 PBC 계산에서 0.95, AAA에서 0.93이었다. IMRT 치료계획은 DVO에서 보여지는 DVH가 선량계산 DVH와 동일하게 나타났다. 하지만 AAA으로 선량계산을 하였을 때는 DVO에서 조건을 만족하는 결과가 선량계산에서는 선량부족으로 나타났다. PRO II을 이용한 VMAT 치료계획은 최적화 할 때는 만족스런 결과를 얻었지만, 선량계산을 실시하였을 때는 저밀도 영역이 선량 부족으로 나타났다. 하지만 PRO III에서 같은 조건을 1회 더 최적화함으로써 최적화 결과와 선량계산 결과가 유사하였다. 결 론: 본 연구에서는 선량계산 알고리즘의 옳고 그름을 판단하지 않는다. 알고리즘이 나타내는 선량 분포의 특성을 분석하고, 특히 최적화가 필요한 IMRT나 VMAT 치료계획에서 최적화 알고리즘의 요인도 치료계획을 수립할 때 고려함으로써 최적의 치료계획을 위한 방법을 제시하고자 한다.

• 상하수도학회지
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• 제18권4호
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• pp.453-460
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• 2004

The objective of this research is to develop the water quality management model to achieve the water quality goal and the minimization of the waste load abatement cost. Most of existing water quality management model can calculate BOD and DO. In addition to those variables, N and P are included in the management model of this study. With a genetic algorithm, calculation results from the mathematical water quality model can be used directly in this management model. Developed management model using genetic algorithm was applicated for the Youngsan River basin. To verify the management model, water quality and pollution source of the Youngsan River had been investigated. Treatment types and optimum treatment costs of the existing and planned WWTPs in the baisn were calculated from the model. The results of genetic algorithm indicate that Kwangju and Naju WWTP have to do the advanced treatment to achieve the water quality goal about BOD, DO and TP. Total annual treatment cost including the upgrade cost of existing WWTPs in the Youngsan River basin was about 50.3 billion Won.

• KEPCO Journal on Electric Power and Energy
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• 제7권1호
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• pp.73-77
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• 2021

As the big data analysis technologies has been developed worldwide, the importance of asset management for electric power facilities based data analysis is increasing. It is essential to secure quality of data that will determine the performance of the RISK evaluation algorithm for asset management. To improve reliability of asset management, asset data must be preprocessed. In particular, the process of cleaning dirty data is required, and it is also urgent to develop an algorithm to reduce time and improve accuracy for data treatment. In this paper, the result of the development of an automatic cleaning algorithm specialized in overhead transmission asset data is presented. A data cleaning algorithm was developed to enable data clean by analyzing quality and overall pattern of raw data.

• 대한의용생체공학회:의공학회지
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• 제13권1호
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• pp.19-24
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• 1992

Lineacgrams are diagnostic films taken using X-ray from the linear accelerator with the patient in the treatment position to assure that the treatment is being delivered in accordance with the treatment prescription. But the image quality of the lineacgram is so bad because of the high X-ray energy. This paper presents a new algorithm that enhances the image of lineacgram. Thls algorithm calculates optimal threshold value which is used for segmentation of lineacgram using co-occurrence matrix and enhances the image Inside and outside treatment area preserving treatments boundary.

• 한국컴퓨터정보학회논문지
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• 제10권4호
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• pp.87-92
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• 2005

본 연구는 레이저빔을 제어하기 위한 전자 셔터의 디지털 I/O 인터페이스와 온도 제어 알고리즘을 개발함으로써 레이저 치료 시 열적 피이드 백을 통한 치료의 가능성을 보여 주었다. 전자셔터는 이러한 전자셔터 구동 인터페이스와 제어 알고리즘의 개발로 경제성은 물론 어느 일정한 범위에서 온도를 자동제어 하도록 설계하였다. 방사선 치료, 고주파 치료 또는 약물치료 등에 의하여 정상세포까지 죽이는 현 치료방법의 문제점을 개선함으로써 어느 일정한 온도 범위에서의 레이저 빔 치료에 의한 환자의 국부적 치료의 가능성을 제시하였다.

• Membrane and Water Treatment
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• 제9권5호
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• pp.363-371
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• 2018

In this work, it was investigated the usability of artificial bee colony (ABC) and genetic algorithm (GA) in modeling adsorption of Co(II) onto drinking water treatment sludge (DWTS). DWTS, obtained as inevitable byproduct at the end of drinking water treatment stages, was used as an adsorbent without any physical or chemical pre-treatment in the adsorption experiments. Firstly, DWTS was characterized employing various analytical procedures such as elemental, FT-IR, SEM-EDS, XRD, XRF and TGA/DTA analysis. Then, adsorption experiments were carried out in a batch system and DWTS's Co(II) removal potential was modelled via ABC and GA methods considering the effects of certain experimental parameters (initial pH, contact time, initial Co(II) concentration, DWTS dosage) called as the input parameters. The accuracy of ABC and GA method was determined and these methods were applied to four different functions: quadratic, exponential, linear and power. Some statistical indices (sum square error, root mean square error, mean absolute error, average relative error, and determination coefficient) were used to evaluate the performance of these models. The ABC and GA method with quadratic forms obtained better prediction. As a result, it was shown ABC and GA can be used optimization of the regression function coefficients in modeling adsorption experiments.

• 대한두개안면성형외과학회지
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• 제14권2호
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• pp.81-88
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• 2013

Background: To suggest the need of more aggressive reduction techniques than closed reduction (CR) technique in nasal fracture treatment, we identified the usefulness of algorithm oriented treatment of nasal fracture that includes indirect open reduction (IOR) and external fixation (EF) as well as the CR. Methods: We compared the clinical course of the group A (n=128) where only the CR was performed regardless of the pattern of the nasal fracture and the group B (n=127) where algorithm oriented treatment including IOR and EF as well as CR was performed depending on the pattern of nasal fracture. And the degree of postoperative pain after CR and IOR technique was compared through the dose of analgesics and pain scores. Results: More than 80% of patients were satisfied the result of reduction in both group A and B. Good contour of nasal bone after reduction was showed 71% of group A and 81% of group B without significant difference. Minor (p>0.05) and major (p<0.05) deformity after reduction were less occurred in the group B than group A. Postoperatively, the dose of analgesics was significantly lower after IOR technique than CR technique (53 mg vs. 142 mg) (p<0.05). Conclusion: Algorithm oriented treatment of nasal fracture including IOR and EF as well as CR reduce major deformity after reduction than treatment of CR alone. It is useful to perform the more aggressive reduction techniques such as IOR and EF according to the pattern of fracture in treatment of nasal fracture.

• Journal of the Korean Physical Society
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• 제73권10호
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• pp.1571-1576
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• 2018

We developed and evaluated an algorithm to calculate the target radiation dose in cancer patients by measuring the transmitted dose during 3D conformal radiation treatment (3D-CRT) treatment. The patient target doses were calculated from the transit dose, which was measured using a glass dosimeter positioned 150 cm from the source. The accuracy of the transit dose algorithm was evaluated using a solid water phantom for five patient treatment plans. We performed transit dose-based patient dose verification during the actual treatment of 34 patients who underwent 3D-CRT. These included 17 patients with breast cancer, 11 with pelvic cancer, and 6 with other cancers. In the solid water phantom study, the difference between the transit dosimetry algorithm with the treatment planning system (TPS) and the measurement was $-0.10{\pm}1.93%$. In the clinical study, this difference was $0.94{\pm}4.13%$ for the patients with 17 breast cancers, $-0.11{\pm}3.50%$ for the eight with rectal cancer, $0.51{\pm}5.10%$ for the four with bone cancer, and $0.91{\pm}3.69%$ for the other five. These results suggest that transit-dosimetry-based in-room patient dose verification is a useful application for 3D-CRT. We expect that this technique will be widely applicable for patient safety in the treatment room through improvements in the transit dosimetry algorithm for complicated treatment techniques (including intensity modulated radiation therapy (IMRT) or volumetric modulated arc therapy (VMAT).