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Successive Fuzzy Classification and Improved Parcellation Method for Brain Anlaysis (뇌 구조 분석을 위한 연속적인 퍼지 분할법과 구획화 방법의 개선)

  • 윤의철;황진우;김재석;김재진;김인영;권준수;김선일
    • Journal of Biomedical Engineering Research
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    • v.22 no.5
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    • pp.377-384
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    • 2001
  • Generally. there have been limitations to investigate structural brain abnormalities with MR images for psychiatric patients. such as schizophrenia. depression and autism, since the brain abnormalities of psychiatric Patients are too small to be detected easily. It has been suggested to exploit the result of size-comparison or analysis of specified Part in various brain tissues. Results of brain analysis highly depend on accuracy of the brain segmentation because it is hard to segment image that the boundary between tissues in the brain MRI is inherently value. In this Paper. we improve the quality of brain segmentation so that we increase the credit of brain analysis. In addition, we Provide the improved images for studying brain abnormalities through left-right insular volume measure using handy software tool .

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Changes in Mining Properties During Maturation of Wheat Kernel (소맥의 등숙에 따른 제분특성의 변화)

  • 김경제;장학길
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.30 no.4
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    • pp.381-387
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    • 1985
  • Development and maturation of wheat were studied with reference to the quality of grain and milling properties. 1000-kernel weight and test weight increased as the wheat matured and as the orginal moisture decreased. The time of maturity was estimated 40 days after heading. Moisture content of wheat grain had a correlation coefficient of -0.877** with 1000-kernel weight, of -0.761** with test weight, and of 0.915** with pearling index. The milling data suggest that even in the early stages of maturing, the endosperm represented at large proportion of the grain. However, milling score was relatively constant at about 40 days. Break-Reduction flour ratio was a great difference between wheat varieties. 1000-kernel weight had a high significant correlation of +0.603** with milling yield, of -0.958** with ash content, and of +0.956** with milling score.

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A Case of Bilateral Lung Volume Reduction Surgery in Severe Emphysema (심한 폐기종 환자에서의 양측성 폐용적 감축술 1예)

  • Kang, Nam-Young;Park, Jae-Seuk;Lee, Myeung-In;Ha, Dong-Yeol;Jee, Young-Koo;Lee, Kye-Young;Kim, Keun-Yeol;Seo, Pil-Weon
    • Tuberculosis and Respiratory Diseases
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    • v.45 no.3
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    • pp.630-635
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    • 1998
  • Lung volume reduction surgery, resecting the most severely affected regions of emphysema, was designed to improve quality of life for selected patients with severe emphysema We report a case of a 72 year old severe emphysema patient who received bilateral lung volume reduction surgery and showed marked improvement of quality of life and lung function.

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The Study of Variable Polarity AC Pulse MIG Arc Welding System (출력전류 극성비 변화를 가지는 펄스MIG아크용접의 특성)

  • 김태진;백주원;조상명;김철우
    • The Transactions of the Korean Institute of Power Electronics
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    • v.8 no.4
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    • pp.307-312
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    • 2003
  • Joining thin aluminum alloy is difficult using most welding techniques. Many of problems associated burn-through by the high heat input. Common welding techniques are TIG, MIG, and MIG-PULSE welding. The VP-GMAW provides more control of the heat balance in the welding arc by taking advantage of the different arc characteristics obtained with each of the two polarities. In this paper, we proposed new VP-GMAW method by control DSP 320C32, and the characteristic and experiment result-voltage, current, welding bead, penetration by this method are presented.

Vacuum Pressure Treatment of Water-Soluble Melamine Resin Impregnation for Improvement of Dimensional Stability on Softwoods (목재의 치수안정성 개선을 위한 진공가압 멜라민 수지함침처리)

  • Oh, Seung-Won;Park, Hee-Jun
    • Journal of the Korean Wood Science and Technology
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    • v.43 no.3
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    • pp.327-333
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    • 2015
  • To measure the dimensional stability of three softwoods by vacuum pressurization of water soluble melamine-formaldehyde (MF) resin impregnation process, properties of resin treated compressed woods (compregs) were measured after impregnating the water soluble MF resin into three coniferous wood species for different impregnation times and resin concentrations. As the resin concentration was higher and impregnation time was longer, coefficients of volumetric shrinkage and anti-volumetric swelling efficiency increased, but coefficients of volumetric swelling, anti-volumetric swelling efficiency and absorption decreased. Also, weight percent gain increased remarkably as the resin concentration was high, but there was no uniform relationship with impregnation time.