• Asian-Australasian Journal of Animal Sciences
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• 제13권2호
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• pp.236-243
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• 2000

A number of developments have occurred over recent years that are being used commercially or have the potential to increase the milk yield and consequently the efficiency of dairy cows. Bovine growth hormone is the most widely known of several attempts that have been made to alter the metabolic endocrinology of dairy cows to increase the rate of milk secretion. The factors affecting the milk yield response to growth hormone, growth hormone-releasing factor, thyroxine and placental lactogen as well as to the immuno-neutralization of somatostatin are briefly considered. Secondly, the recent greater understanding of the mechanism by which the milk yield is increased following more frequent milking, which has resulted from the identification and characterization of the feedback inhibitor of lactation (FIL) protein, is reviewed. The identification of this protein provides new avenues of research which may lead to a reduction in the rate of decline in milk yield with advancing lactation or to undiminished milk yields despite a reduction in frequency with which the animals are milked.

• 한국소음진동공학회논문집
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• 제11권9호
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• pp.475-485
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• 2001

A study on the structural analysis of the composite laminated cylindrical shell which has simply supported boundary conditions at both ends, was performed. The results were used into the neural networks. Neural networks identify the load characteristics of the composite shells. Momentum Backpropagation which the learning rate can be varied was developed. Input patterns consist of strains at 9 side points which is divided equally. Output layers are the load characteristics. Developed program was used for the training. The training with variable learning rate was converged close to real oad characteristics. Inverse engineering can be applicable to the composite laminated cylindrical shells with developed neural networks.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.488-489
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• 2019

차량의 특징점들 사이의 간격과 그 크기의 비례율의 식으로 자동차의 차종을 식별하는 방법을 제안한다. 자동차 영상은 기본 RGB모델에서 Gray색상 모델로 변환시켜 사용한다. Canny Edge Direction을 수행하여 자동차의 배경이 되는 영상을 제거한다. 윤곽선 추출을 통하여 원하는 특징 점을 얻는다.

• 한국산업융합학회 논문집
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• 제24권1호
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• pp.1-7
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• 2021

In this paper, we presented the experimental basis for the theoretical background and robustness of the Convolutional Neural Network for object recognition based on artificial intelligence. An experimental result was performed to visualize the weighting filters and feature maps for each layer to determine what characteristics CNN is automatically generating. experimental results were presented on the trend of learning error and identification error rate by checking the relevance of the weight filter and feature map for learning error and identification error. The weighting filter and characteristic map are presented as experimental results. The automatically generated characteristic quantities presented the results of error rates for moving and rotating robustness to geometric changes.

• 한방재활의학과학회지
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• 제24권2호
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• pp.107-114
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• 2014

Objectives The purpose of this study is analyzing internal research trends of oriental obesity pattern identification in korean literature based on obesity pattern identification questionnaires, development and application of Pattern Identification System to help solve problems of future researches. Methods 6 Korean databases were searched for articles of oriental obesity pattern identification, irrespective of publication year and 13 studies were reviewed. An analytical method such as descriptive statistics and an actual number and percentage was used. Results We collected 13 studies. 4 studies were published in 2012 and 2008, the highest number of studies. 7 Clinical studies were the major research method. The Studies were classified according to the characteristics and design. 5 studies were about research of analysis and improvement of oriental obesity pattern identification questionnaire, the most number of studies. 4 studies were about research of observational studies in clinical on obesity pattern identification. 3 studies were about research of intervention studies in clinical on obesity pattern identification and 1 study was about clinical practice recommendation. Conclusions Establishment of obesity pattern identification system and its clinical application could lead to standardizing obesity pattern identification and clinical practice guideline. Applied on other diseases, obesity pattern identification system could also lead to improving treatment rate, contributing to the development of clinical practice guidelines and academic field of research.

• 한국전기전자재료학회논문지
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• 제28권5호
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• pp.320-325
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• 2015

This paper dealt with a defect identification algorithm which is based on single partial discharge (PD) pulse analysis in gas insulated structure. Four types of electrode systems such as a needle-plane, a plane-needle, a free particle and a crack inside spacer were fabricated to simulate defects in gas insulated switchgear (GIS). We measured single PD pulse by an oscilloscope with a sampling rate of 5 GS/s and a frequency bandwidth of 1 GHz. Data aquisition and signal processing were controlled by a LabVIEW program. Physical shapes of PD pulses were compared with kurtosis, skewness and time-based parameters as rising time, falling time and pulse-width. These parameters were analysed by an algorithm with a back propagation algorithm (BPA). By applying the algorithm, the identification rate was 97% for the needle-plane electrode, 96% for the plane-needle electrode, 91% for the free particle and 93% for the crack inside spacer. The results verified that the algorithm could identify the type of defects in GIS.

• Reproductive and Developmental Biology
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• 제32권2호
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• pp.127-133
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• 2008

The objective of this study was two folds: to investigate the relationship between paternal identification rate and sperm quality parameters such as motility and sperm chromatin structure assay after heterospermic insemination; to see if mutual complement between tests and development of useful technique to enhance the fertility in artificial insemination. In individual boar's fertilizing ability, 3 high fertility boars showed significantly high fertility (p<0.05) compared to 3 low fertility boars, but there was no difference in litter size between two groups. Sperm motility test in pooled and individual semen using computer assisted sperm analysis (CASA) revealed that no significant difference among boars. The high fertile boar showed tendency of low %Red (High red fluorescence/green+red fluorescence) in sperm chromatin structure assay (SCSA) but paternal identification rate from piglets did not differ after heterospermic insemination. The correlation coefficient between individual or pooled semen function test and farrowing rates were well correlated as follows: %Red with litter size (r= - 0.53, p=0.03); %Red with paternal identification rates (r=-0.51, p=0.03); paternal identification rates with litter size (r=0.57, p=0.02). These results indicate that sperm chromatin structure assay and sperm quality parameter test in pooled semen are useful method to predict and evaluate the fertilizing capacity after heterospermic insemination in boars.

• 전자공학회논문지CI
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• 제45권5호
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• pp.201-208
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• 2008

능동형 RFID 시스템은 금속재질에 취약한 수동형의 단점을 극복하는 동시에 인식거리가 길고, 인식률이 좋아 항만물류나 국방 분야에서 사용이 확대되고 있다. 하지만 동일한 표준으로 개발된 제품의 서로 간에 인식이 불가능한 사례가 보고되고 있으며, 국제적으로 정확한 평가방법 및 장치가 정립되지 않아 개발된 제품들 간의 상호 운용성 및 표준 적합성 평가에 대한 어려움이 존재한다. 본 논문에서는 능동형 RFID 시스템의 적합성 평가를 위한 에뮬레이터의 하드웨어 및 소프트웨어를 설계하고 제작하였다. 설계된 장치는 Matlab의 Simulink를 통한 시뮬레이션으로 성능을 분석하였고, 실제 능동형 RFID 태그의 표준 적합성 평가를 통해 에뮬레이터의 적용 가능성을 검증하였다.

• 한국전자파학회논문지
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• 제21권7호
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• pp.752-760
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• 2010

본 논문에서는 리더간 간섭이 EPCglobal Generation-2(Gen-2) RFID(Radio Frequency Identification) 시스템의 성능에 미치는 영향을 물리 계층과 MAC 계층을 모두 고려하여 분석하였다. 이를 위해 기존의 태그 충돌만을 고려한 Gen-2 프로토콜 성능 분석 연구에 리더간 간섭을 추가하여, 실제 UHF RFID 시스템 운용 상황과 유사한 환경에서 성능을 분석할 수 있는 모델을 제안하였다. 제안한 모델은 DTMC(Discrete Time Markov Chain) 모델에 다른 리더에 의해 발생하는 리더간 간섭 확률을 결합한 것으로, 간섭 리더의 수에 따른 QSR(Query Success Rate)와 TIS(Tag Identification Speed)의 변화를 정량적으로 분석할 수 있다. 시뮬레이션을 검증하기 위하여 이론치와 비교한 결과, 100개 이상의 태그를 갖는 경우 이론치와 차이를 보이지 않았다. 분석 결과, EPCglobal Gen-2 프로토콜에서 간섭 리더 1기당 TIS가 10 tags/sec씩 감소되는 것을 확인하였다.

• 대한치과교정학회지
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• 제49권1호
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• pp.41-48
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• 2019

Objective: This in-vivo study aimed to compare landmark identification errors in anteroposterior (AP) and posteroanterior (PA) cephalograms generated from cone-beam computed tomography (CBCT) scan data in order to examine the feasibility of using AP cephalograms in clinical settings. Methods: AP and PA cephalograms were generated from CBCT scans obtained from 25 adults. Four experienced and four inexperienced examiners were selected depending on their experience levels in analyzing frontal cephalograms. They identified six cephalometric landmarks on AP and PA cephalograms. The errors incurred in positioning the cephalometric landmarks on the AP and PA cephalograms were calculated by using the straight-line distance and the horizontal and vertical components as parameters. Results: Comparison of the landmark identification errors in CBCT-generated frontal cephalograms revealed that landmark-dependent differences were greater than experienceor projection-dependent differences. Comparisons of landmark identification errors in the horizontal and vertical directions revealed larger errors in identification of the crista galli and anterior nasal spine in the vertical direction and the menton in the horizontal direction, in comparison with the other landmarks. Comparison of landmark identification errors between the AP and PA projections in CBCT-generated images revealed a slightly higher error rate in the AP projections, with no inter-examiner differences. Statistical testing of the differences in landmark identification errors between AP and PA cephalograms showed no statistically significant differences for all landmarks. Conclusions: The reproducibility of CBCT-generated AP cephalograms is comparable to that of PA cephalograms; therefore, AP cephalograms can be generated reliably from CBCT scan data in clinical settings.