• Proceedings of the KAIS Fall Conference
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• 2011.05a
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• pp.77-80
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• 2011

본 논문에서는 기존의 배전계통에 신에너지전원 연계로 인하여 발생하고 있는 정상상태와 전력품질에 대한 문제점을 LabVIEW를 이용한 신에너지전원 평가 시뮬레이터를 제작하여 분석한다. 종래의 배전계통에 있어서의 전력조류는 변전소에서 선로말단을 향한 단방향이었지만, 신에너지전원이 연계된 경우에는 그 출력용량의 여부에 따라 양방향의 전력조류가 발생할 가능성이 있어, 계통운용상 여러 가지의 문제점이 야기될 수 있다. 따라서 본 논문에서는 태양광전원 연계에 따른 정상상태와 전력품질에 대한 문제점을 상세히 분석하기 위하여, 실계통의 특성을 모의한 신에너지전원 평가 시뮬레이터를 제작하였다. 그리고 이 장치를 이용하여 역률, 선로길이, 태양광발전량의 변동에 따른 계통의 다양한 운용특성시험을 수행하여 제안한 평가 시뮬레이터의 유용성을 확인하였다.

• Proceedings of the KAIS Fall Conference
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• 2011.05a
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• pp.73-76
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• 2011

최근 배전계통에 태양광전원의 전력변환장치나 비선형기기에서 발생되는 고조파는 보호계전기의 오동작 및 기기의 손실 등을 초래하여, 이에 대한 전력품질특성 해석이 필수적인 상황이다. 따라서 본 논문에서는 태양광전원이 연계되어 정상운용중인 배전계통에 미치는 전력품질 특성시험을 위하여, LabVIEW를 이용한 전력품질 평가시스템을 제작하였다. 그리고 이 장치를 통해 태양광전원 연계 시 발생하는 고조파특성을 분석하여, 제한한 평가시스템의 유용성을 확인하였다.

• Journal of the Korean Home Economics Association
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• v.39 no.12
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• pp.177-188
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• 2001

The purpose of this study is to investigate the fitness according to drafting method of the block patterns for women in Korea. The major findings of this study are as follows: 1. According to each sensory test of the frontal view, back view, side view and silhouette Block Pattern I is the best of them in summation of the sensory tests score. Block, Pattern D and I have good shape too. However the best block Pattern D shows good score in evaluation of overall fitness and silhouette. 2. Most of block patterns, which show high scores in sensory tests, are the Compromise Method taking merits of the Proportional Method and Short Measure Method among the Pattern Drafting Methods. Box-shape patterns show low score in the sensory tests. 3. Regarding to the number of measurement, the patterns of the Compromise Method using 6-8 measurements seem to be optimal. In degree of fitness, loose fit type basic patterns are better than other patterns from a viewpoint of the total satisfaction.

• Speech Sciences
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• v.14 no.3
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• pp.139-146
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• 2007

This study attempted to obtain differences as a function of Korean and Chinese in vowels. The $NasalView^{(R}}$ (Tiger Electronics Inc., Seattle, USA) was used to obtain nasalance values. Ninety eight subjects participated in this study (48 females from Korea and 48 females from China). The stimuli used in this experiment included vowel /i, a, u/. The stimuli were presented in a random order. The entire session was recorded and the average nasalance score was measured via the $NasalView^{(R)}$. The procedure took approximately 10 minutes. The results of this study showed that the difference between Korean and Chinese was significant in vowel /i, a, u/. The average nasalance scores were /i, a, u/ from highest to lowest in order in vowels. The average nasalance was higher in China than Korean in vowels.

• Journal of the korean academy of Pediatric Dentistry
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• v.6 no.1
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• pp.15-20
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• 1979

Sixty non-vital primary molars of forty six children who were patients at the Pedodontic Department of Seoul University Hospital, aged from 2 years 7 months to 9 years 1 month were performed for coronal pulp therapy. For the evaluation of non-vital pulp therapy, the author observed those teeth both clinically and roentgenographically. The results were as follows: 1. Coronal therapy of non-vital tooth can be accepted as one of the ordinary methods at the view of the save of tooth, time and simplicity. 2. The results were satisfactory 78.3% clinically and 68.3% roentgenographically. 3. The dissatisfactory signs were a) Clinical view There were dissatisfactory signs on 13 cases. (1) 2 teeth had fistulous opening. (2) 11 teeth reacted to purcussion and mobility. b) Roentgenographical view There were dissatisfactory signs on 19 cases. (1) 13 teeth showed roentgenolucency at bifurcation area. (2) 2 teeth showed pathological root resorption. (3) 4 teeth showed periodontal thickening.

• The Journal of the Korea Contents Association
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• v.10 no.6
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• pp.323-328
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• 2010

If a patient wearing arm sliding due to shoulder dislocation or fracture is impossible with abduction, the velpeau view is performed instead of superior-inferior axial projection view. However, it aggravates the patient's pain because it is difficult for the patient with dislocation or fracture to pull back the shoulders. Therefore, I suggest a new method of the 'modified velpeau view' that allows patients to lower their heads at examination. In order to investigate the easiness of fixing posture at examination and clinical utility, I conducted a study comparing the bone structures at the velpeau view and those at the modified velpeau view depending on wall-bucky and the patients' leaning forward angle ($30^{\circ},\;45^{\circ},\;60^{\circ}\;and\;75^{\circ}$), with the subjects of 20 velpeau view-prescribed patients amongst who had come to my hospital suspected of dislocation of shoulder or fracture and 30 healthy people from October of 2009 to January of 2010. Department of radiologists and orthopedics specialists evaluated the pictures for scales 0 to 5(best grade) under the given criteria. As a result of comparison in bone structures depending on wall-bucky and the leaning-forward angle in the group of healthy people, the velpeau view and the modified velpeau showed a similar diagnostic utility at $45^{\circ}$ and $60^{\circ}$. The picture evaluation result for proving diagnostic value showed that the anterior and posterior of shoulder heads and the anterior and posterior of glenoid fossa could be observed in the velpeau view; on the other hand, besides these areas acromioclavicular joint and coracoid process could be viewed in the modified velpeau view. This result verified that the modified velpeau view could replace the velpeau view for its diagnostic value as an examination method. This result, moreover, suggests that the modified velpeau view needs to be studied and improved from a variety of perspectives not only for an alternative for patients having troubles with the velpeau view position but also for clinical application of new test method for diagnosis of shoulder disorders other than dislocation of shoulder or fracture.

• Journal of the Korean Society of Costume
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• v.52 no.7
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• pp.71-85
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• 2002

The purpose of this study is (1) to research on the diverse evaluation criteria suggested in the existing literatures, selected the contents of the evaluation according to the evaluation factors, and examined whether they are appropriate for the evaluation of websites that offer Clothing and Ornament related information through reliability analysis - all to set the evaluation criteria for the websites that acquire data. In addition. (2) contents of evaluation which are deemed important by the users and developers were compared and recommended as the detailed evaluation contents according to evaluation factors. The results of this study were as follows. 1. The evaluation factors for the fashion websites that provide Clothing and Ornament related information were selected as follows: contents of the information(11 contents of evaluation), ease of use(12), screen design(10), accessibility(9), sensitive enjoyment(4), scope of information use(3), purpose(1), and target user(1). As result of reliability analysis. Cronbach's a contents of the information (0.76), ease of use (0.77), screen design (0.85), accessibility (0.81), sensitive enjoyment (0.71), and scope of information use (0.52). 2. When the level of importance for the detailed evaluation contents was examined from the user and developer point of view, recency of information. rapid speed for the websites access. fast loading of webtext and fast transmission speed topped the list as first, second and third places.

• Journal of KIISE
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• v.44 no.12
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• pp.1319-1332
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• 2017

In recent years, the number of video cameras that are used to record and broadcast live sporting events has increased, and selecting the shots with the best view from multiple cameras has been an actively researched topic. Existing approaches have assumed that the background in video is fixed. However, this paper proposes a best view selection method for cases in which the background is not fixed. In our study, an athlete of interest was recorded in video during motion with multiple cameras. Then, each frame from all cameras is analyzed for establishing rules to select the best view. The frames were selected using our system and are compared with what human viewers have indicated as being the most desirable. For the evaluation, we asked each of 20 non-specialists to pick the best and worst views. The set of the best views that were selected the most coincided with 54.5% of the frame selection using our proposed method. On the other hand, the set of views most selected as worst through human selection coincided with 9% of best view shots selected using our method, demonstrating the efficacy of our proposed method.

• Journal of radiological science and technology
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• v.39 no.4
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• pp.631-636
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• 2016

Hitherto, spatial resolution has commonly been evaluated by test patterns or phantoms built on some specific distances (from close to far) between two objects (or double targets). This evaluation method's shortcoming is that resolution is restricted to target distances of phantoms made for test. Therefore, in order to solve the problem, this study proposes and verifies a new method to efficiently test spatial resolution with a single target. For the research I used PSF and JND to propose an idea to measure spatial resolution. After that, I made experiments by commonly used phantoms to verify my new evaluation hypothesis inferred from the above method. To analyse the hypothesis, I used LabVIEW program and got a line pixel from digital image. The result was identical to my spatial-resolution hypothesis inferred from a single target. The findings of the experiment proves only a single target can be enough to relatively evaluate spatial resolution on a digital image. In other words, the limit of the traditional spatial-resolution evaluation method, based on double targets, can be overcome by my new evaluation one using a single target.

• The Journal of the Korean dental association
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• v.55 no.1
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• pp.7-20
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• 2017

The purpose of this study is to analyze the data on the medical personnel education system and license scheme and provide the basic material for an enhanced qualification system. In China, dental education reform has been underway with a view to providing an inclusive basic medical service package to the whole country by 2020. It is also estimated that the number of Korean dental medicine students in China would be fewer. And most of them desire to get a job in China after acquiring the Chinese license, suggesting little prospect of a massive inflow into Korea in the near future. In Japan, students are required to complete a clinical training program for over 1 year after receiving licenses to become an independent practitioner. But they can apply for the Korean preliminary examination without this post-graduation process. For this reason, the quality issue in license effectiveness review has been seriously discussed. It is deemed desirable to limit the Korean accreditation to Japanese graduates from the dental schools certified by the Japanese dental accreditation body.