• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제35권6호
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• pp.442-450
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• 2009

Purpose: Simultaneous implantation has been traditionally limited to patients with at least 5 mm of residual bone to ensure that the implant is completely stabilized. This is considered to be one of the most critical factors for primary implant stability and parallelism and, subsequently osseointegration. Recently, improved initial implant stability is provided by advancement of surgical techniques, implant designs and surface treatments. This has led surgeons to extending simultaneous treatment option to patients with below 4 mm of residual bone height, despite the lack of much data. The purpose of this study was to retrospectively evaluate and compare the status of implants which are installed by delayed and simultaneous methods. Material and methods: The subjects were patients(121 patients, 278 implants) who had been operated with sinus lifting from 2003 to 2007 in Sun Dental Hospital. Lateral window approach with autograft and xenograft(1:1 ratio) were carried out for all sinus lifting. 4 types of implant were used. The mean follow up period was 26.3 months(19 - 58 months) in delayed group, and 22.8 months(18 - 43 months) in simultaneous group. Results: The survival rate of implant restoration of this study was 98.2% in delayed group and 91.7% in simultaneous group. In simultaneous group, wide-platform type implants showed 100% survival rate. The total average of marginal bone loss in radiographs was $0.96\;{\pm}\;0.29\;mm$ in delayed group and $1.02\;{\pm}\;0.31\;mm$ in simultaneous group. Conclusion: Simultaneous implantation with sinus lifting(below 4mm of residual bone height) could be predictable treatment.

• 한국가시화정보학회:학술대회논문집
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• 한국가시화정보학회 2005년도 추계학술대회 논문집
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• pp.93-98
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• 2005

CT 스캔 데이터를 이용하여 호흡기의 컴퓨터 모델을 얻고, RP 를 이용하여 고형 모형으로 정교한 호흡기 유로 모형을 제작하였고, 호흡을 정확하게 모사하는 펌프를 만들었다. 사람의 호흡에 관한 생리적 테이터를 이용하여 캠을 제작하고 대형 피스톤 펌프를 만들어 사람의 호흡을 정확하게 모사하였다. 이를 이용하여 생리적 주기를 갖는 호흡기 내 유동에 대항 PIV 결과를 획득하였다. 최초로 정확한 기하학적 형상 및 입구와 출구 조건 하에서 인후부와 기관 내의 공기 유동장의 테이터베이스를 확보하였으므로, 향후 기존의 단순화된 모델을 이용한 실험적 수치해석적 결과들을 검정하는데 활용될 것이며 호흡기 질환의 진단과 치료에 기여할 수 있는 생리학적 병리학적 데이터를 제공할 수 있으리라 생각된다. 또한 공해 물질, 유독 물질, 흡입 약품 등의 호흡기 내 흡착 현상 규명 등에도 활용될 수 있을 것으로 보인다.

• 한국항행학회논문지
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• 제17권1호
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• pp.98-106
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• 2013

본 논문에서는 다시점 카메라 환경에서 비디오 압축 도메인의 이동체 검출 및 추적 방법을 제안한다. 비디오 압축 비트열로부터 추출된 움직임 벡터와 블록 모드를 기반으로 이동블록 검증 및 라벨링, 이웃 blob 결합 알고리즘을 제안한다. 또한, 단일시점 및 다시점 환경에서 이동체의 일시 정지, 교차, 겹침시에도 지속적인 추적이 가능한 일정 시간 구간내 이동체 정보 갱신 기법을 제안한다. 기준 카메라 화면에 나타나지 않는 이동체는 다른 카메라 화면의 이동체 위치로부터 기준 카메라 화면상 좌표로 변환하여 참조하였다. 제안 기법의 성능은 부호기의 움직임 벡터 정밀도에 의존적인데, 두 대의 카메라 환경에서 H.264 JM15.1 압축 비트열로부터 복호화 없이 평균 89%와 84%의 검출률과 추적률을 보였다. 또한, 물체의 일시 정지, 교차, 겹침시에도 지속적인 이동체 검출 및 추적이 가능하며, 단일시점 환경에 비해 다시점 환경에서 평균 6%의 검출률과 7%의 추적률 개선을 확인할 수 있었다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 춘계학술대회
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• pp.280-283
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• 2007

The first grid-connected, building-integrated transparent amorphous silicon photovoltaic installation has been operated since October 2004 in Yongin, Korea. The 2.2kWp transparent PV system was applied to the facade of entrance hall in newly constructed KOLON E&C R&D building. The PV module is a nominal 0.98m ${\times}$ 0.95m, 10% transparent, laminated, amorphous(a-Si) thin-film device rated at 44 Wp per module. To demonstrate the architectural features of thin film PV technologies for daylighting application, transparent PV modules are attached to the building envelope with the form of single glazed window and special point glazing(SPG) frames. Besides power generation, the 10% transmittance of a-Si PV module provides very smooth natural daylight to the entrance hall without any special shading devices for whole year. The installation is fully instrumented and is continuously monitored in order to allow the performance assessment of amorphous silicon PV operating at the prevailing conditions. This paper presents measured power performance data from the first 12 months of operation. For the first year, annual average system specific yield was just 486.4kWh/kWp/year which is almost half of typical amorphous silicon PV output under the best angle and orientation. It should be caused by building orientation and self-shading of adjacent mass. Besides annual power output, various statistical analysis was performed to identify the characteristics of transparent thin film PV system.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권10호
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• pp.3490-3507
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• 2014

License plate detection (LPD) is one of the most important aspects of an automatic license plate recognition system. Although there have been some successful license plate recognition (LPR) methods in past decades, it is still a challenging problem because of the diversity of plate formats and outdoor illumination conditions in image acquisition. Because the accurate detection of license plates under different conditions directly affects overall recognition system accuracy, different methods have been developed for LPD systems. In this paper, we propose a license plate detection method that is rapid and robust against variation, especially variations in illumination conditions. Taking the aspects of accuracy and speed into consideration, the proposed system consists of two stages. For each stage, Haar-like features are used to compute and select features from license plate images and a cascade classifier based on the concatenation of classifiers where each classifier is trained by an AdaBoost algorithm is used to classify parts of an image within a search window as either license plate or non-license plate. And it is followed by connected component analysis (CCA) for eliminating false positives. The two stages use different image preprocessing blocks: image preprocessing without adaptive thresholding for the first stage and image preprocessing with adaptive thresholding for the second stage. The method is faster and more accurate than most existing methods used in LPD. Experimental results demonstrate that the LPD rate is 98.38% and the average computational time is 54.64 ms.

• 대한물리치료과학회지
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• 제7권2호
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• pp.579-595
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• 2000

The purposes of this study were to compare pelvic tilt before and after manipulation of sacroiliac joint in 31 low back pain patients (11 males, 20 females) with sacroiliac joint dysfunction. The sacroiliac joint of patients was manipulated on the side of anterior pelvic tilt, using the technique described by Stoddard (1962) and Greenmann (1996). I used this technique because it usually eliminated sacroiliac joint dysfunction in one treatment session. SPSS for window computer system was used to analyze the data. Also t-test was performed for comparison of pelvic tilt angle before and after manipulation, and Pearson product-moment correlation analysis was performed for intratester reliability for measurements of pelvic tilt angle before and after manipulation. The result were as follows: 1. Intratester reliability was good for measures of pelvic tilt (r=.98). 2. The pelvic tilt after manipulation was significantly decreased (mean=$3.40^{\circ}$) compared with the pelvic tilt before manipulation (p=.001). All subjects showed asymmetrical right versus left pelvic tilt before manipulation. 40% of subjects showed decreased asymmetrical right versus left pelvic tilt after manipulation, and 60% of subjects showed symmetrical right versus left pelvic tilt after manipulation. I think that pelvic tilt asymmetry with hypomobility due to loss of joint play could be symmetrized by manipulation or mobilization, but pelvic tilt asymmetry with unilateral pelvic muscle shortening could not be symmetrized by manipulation or mobilization without relaxation and stretching of shortened muscles.

• 대한수의학회지
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• 제42권4호
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• pp.485-493
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• 2002

The purpose of this study was to develope a computer program to help with gross diagnosis of protein-energy balance and feeding management practice and with the prediction about the risk possibility of productive disease such as reproductive and metabolic disorders by evaluating fat, protein, and milk urea nitrogen (MUN) from individual cow milk in dairy herd Somatic cell counts also represent the condition of udder health. The principal flow charts of this program was to check on herd management, sampling the composite milk, analysis the milk composition, conversion of data from milking equipment to program, input and analysis of data in program, and report. This program is compatible with window 95/98 system. The major analytical elements of this program were presented as; the profile of herd lactation curve analysis of the test-day milk production level, the distribution of somatic cell count, the fat to protein ratio to evaluate body energy balance, and the interpretation of dietary protein-energy balance by milk protein and MUN contents for individual cows. This program using milk fat, protein, MUN, and somatic cell counts will serve as a monitoring tool for the protein-energy balance and the feeding management practice, and for distribution of mastitis in individual cows. It will also be used to manage the nutritional and reproductive disorders and mastitis at the farm level.

• 전기전자학회논문지
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• 제2권1호
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• pp.150-159
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• 1998

본 논문은 필기체 한글의 특징을 추출한 후 이를 신경망을 이용하여 인식하였다. 한글의 특징 추출을 위해 $5{\times}5$ 윈도우 방법을 사용하였는데, 이는 $3{\times}3$ 윈도우 방법을 수정한 것이다. 추출된 특징을 이진화 코드로 변환하여 신경망의 입력으로 사용하며, 백프로퍼게이션 알고리즘으로 학습시켰다. 수직 모음, 수평모음, 자음 인식을 위한 3개의 신경망을 각각 구성하였고, 결과를 비교하기 위하여 3가지 학습 방법을 사용하였다. 3가지 학습 방법은 고정 코드 방법, 학습 코드 방법 I, 학습 코드 방법 II이고 학습 코드 방법 II가 가장 좋은 결과를 보였다. 이 경우 수직 모음과 수평 모음은 100%의 인식률을, 자음은 93.75%의 인식 결과를 보였다.

• 지역사회간호학회지
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• 제15권1호
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• pp.102-109
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• 2004

Purpose: The purpose of this study was to confirm a structural model for health promotion for industrial workers. Methods: Data was collected by questionnaires from 294 industrial workers at a food manufacturing factory. The data collected were analyzed through SAS 8.1 and Window LISREL 8.12a. Results: 1. The result of the test showed that the measurement of fitness was $x^2$=(삭제) 443.35, $x^2$/df 5.3415, GFI .86, AGFI .75, RMR .060, NFI .95, NNFI .93, CN 77.58, and those other than NFI and NNFI did not well fit into the practical data. 2. 15 out of 29 paths in a constructed model were statistically significant. 3. The measurements for total fitness in the modified model were $x^2$= (삭제) 146.51, $x^2$/df 1.8546, GFI .95, AGFI .91, RMR .042, NFI .98, NNFI .99, CN 223.44, all of which showed fitness in good shape to the practical data. 4. The result of the study for the modified model indicated that perceived self efficacy had the most significant direct effect on health promotion behaviors, and self esteem, perceived benefits of action, interpersonal influences, commitment to a plan of action were important factors having influences on them. Conclusion: The derived model in this study is considered appropriate in explaining and predicting health promoting behavior of industrial workers. Therefore, it can effectively be used as a reference model for further studies and suggested implication in nursing practice.

• 정보처리학회논문지B
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• 제10B권2호
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• pp.213-218
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• 2003

본 논문에서는 음성으로 동작하는 십자말 게임을 구현하였다. 십자말 게임에 사용되는 문제의 배열은 본 논문에서 제안한 CAA(Cross Array Algorithm)에 의해 생성된다. CAA는 영역별 사전을 이용하여 십자말 배열을 매번 랜덤하게 자동으로 생성한다. CAA에 의한 배열 생성을 위해 본 논문에서는 7개 영역에 대한 사전을 구축하였다. 구현된 십자말 게임은 마우스나 키보드뿐만 아니라 음성으로 동작하도록 설계되었다. 음성에 의한 인터페이스는 음성인식 및 합성 기술이 사용되었으며, 사용자에게 보다 편리한 기능을 제공한다. CAA의 성능평가는 십자말 배열을 생성하는데 소요되는 연산시간의 측정과, 십자말 배열의 단어 생성율을 측정함으로써 수행되었다. CAA의 성능 평가 결과, 모든 창에 대하여 연산시간은 약 10ms 내외였으며, 단어 생성율은 약 50%를 보였다. 또한, 음성인식 실험 결과는 각 창의 크기가 "$7{\times}7$, "$9{\times}9$", "$11{\times}11$"일 때, 각각 98.5%, 97.6%, 96.2%의 인식률을 보였다., 97.6%, 96.2%의 인식률을 보였다.