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Construction of a Pilot Headbox System and Pressure Monitoring Apparatus for the Development of High Speed Hydraulic Headboxes

  • Youn, Hye-Jung;Lee, Hak-Lae
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.35 no.5
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    • pp.37-45
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    • 2003
  • To investigate the influence of the design and operating parameters of the headbox on hydrodynamics, a pilot headbox system and pressure monitoring apparatus were constructed. The pilot headbox system consisted of a circulating water reservoir, centrifugal pump, distributor, turbulence generator and slice. The distributor was designed to function as a pressure attenuator. Flow rate to the headbox and MD and CD velocity profiles in the slice zone were monitored using an ultrasonic flowmeter and Pitot tubes, respectively. As the distance from the step diffusor increased, evener CD velocity profile was observed. Wall effect increased with the increase of the velocity. Flow stability in the headbox was evaluated by injecting a dye at the outlet of the distributor. Application of theoretical analysis based on CFD in designing headboxes is briefly discussed.

A Case Report of Taeyangbyeong Nausea Patient with Soshiho-tang (『상한론(傷寒論)』 대양병(大陽病) 96조(條)에 근거한 소시호탕(小柴胡湯)을 투여하여 호전된 욕지기 치험 1례)

  • Lee, Lae-Chun;Lee, Ja-Bok
    • 대한상한금궤의학회지
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    • v.5 no.1
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    • pp.53-59
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    • 2013
  • Objective : This study aims to explain the effect of Soshiho-tang on an nausea which a Taeyangbyeong patient has. Methods : This is a case report on a male patient who has been suffering from nausea which is accompained by anger. According to Diagnostic system based on Shanghanlun provisions, Soshiho-tang was provided for four weeks. Results : After a series of Soshiho-tang treatments, the patient's symptoms and result improved. Conclusions : This case study showed an effectiveness of using Soshiho-tang according to Diagnostic system based on Shanghanlun provisions on nausea.

Implementation of Network System for Bio-physical signal Communication

  • Kim, Jeong Lae;Kang, Jeong Jin;Rothwell, Edward J.
    • International Journal of Advanced Culture Technology
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    • v.1 no.1
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    • pp.1-5
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    • 2013
  • This network system for home care realized communication by the bio-physical signal, to convey physical rhythm. Four function of displacement had point of a Vision, Somatosensory, Vestibular and CNS. Bio-physical signal was decided to design a maximum points and minimum points with 0.01unit in reference level. Bio-physical signal was checked to compound physical condition of body posture for sensory organ. There detected a measurement of Vision, Somatosensory, Vestibular, CNS and BMI. The service of network system of home can be used to support a health care system for health assistant in health care center. It will expect to manage a physical parameter for network communication.

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Rapidly Progressive Osteonecrosis of the Humeral Head after Arthroscopic Bankart and Rotator Cuff Repair in a 66-Year Old Woman: A Case Report

  • Cho, Hyun IK;Cho, Hyung Lae;Hwang, Tae Hyok;Wang, Tae Hyun;Cho, Hong
    • Clinics in Shoulder and Elbow
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    • v.18 no.3
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    • pp.167-171
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    • 2015
  • Humeral head chondrolysis has been widely reported as a devastating complication after arthroscopic shoulder surgery; however little is known about post-arthroscopic humeral head osteonecrosis. We experienced a 66-year-old female patient with rapidly progressive osteonecrosis of the humeral head only seven months after arthroscopic Bankart and rotator cuff repair. The patient had no systemic risk factors for osteonecrosis. A satisfactory result was achieved with reverse total shoulder arthroplasty for severe humeral head destruction and an irreparable massive rotator cuff tear. Shoulder surgeons should be aware of such severe complication, perform routine radiographs, and pay close attention to the presence of constant pain or loss of motion after arthroscopic shoulder surgery.

Polymaleimide Copolymers with Norbornane units for Polymeric Optical Waveguides

  • Park, Ki-Hong;Kim, Won-Lae;Lee, Chul-Joo;Han, Kwan-Soo;Han, Hak-Soo
    • Journal of Photoscience
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    • v.9 no.1
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    • pp.23-28
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    • 2002
  • In order to obtain thermal-stable, low birefringent, and low optical loss waveguiding materials, we synthesized several fluorinated poly (maleimide-co-glycidylmethacrylate)s using a pentafluorophenylmaleimide (PEM) and two kinds of methacrylate derivatives as comonomers and glycidylmethacrylate as a crosslinker. One comonomer is a linear fluorinated methacrylate (HFBM) and another is a bulky norbornane-derived methacrylate (NMMA). These copolymers could be self-crosslinked by heating due to epoxy groups of glycidylmethacrylates. As a maleimide contents increased to 50 mol%, these copolymers showed high decomposition temperatures of above 300$^{\circ}C$. The refractive index could be precisely controlled by the variation of PFM/HFBA or PFM/NMMA feed ratio in the range of 1.410∼1.508 at 643 nm. The copolymers had very low birefringence in the range of 1∼5${\times}$10$\^$-4/.

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CONSTRUCTION OF A PILOT HEADBOX SYSTEM AND PRESSURE MONITORING APPARATUS FOR THE DEVELOPMENT OF HIGH SPEED HYDAULIC HEADBOXES

  • Youn, Hye-Jung;Lee, Hak-Lae
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 1999.04b
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    • pp.381-385
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    • 1999
  • To investigate the influence of the design and operating parameters of the headbox on hydrodynamics, a pilot headbox system and pressure monitoring apparatus were constructed. The pilot headbox system consisted of a circulating water reservoir, centrifugal pump, distributor, step diffusor and slice. The distributor was designed to function as a pressure attenuator. Flow rate to the headbox and MD and CD velocity profiles in the slice zone were monitored using an ultrasonic flowmeter and Pitot tubes, respectively. As the distance from the step diffusor increased, evener CD velocity profile was observed. Wall effect increased with the increase of the velocity. Flow stability in the headbox was evaluated by injecting a dye at the outlet of the distributor. Application of theoretical analysis based on CFD in designing headboxes is briefly discussed.

A Study of the Method of Statistical Factors Analysis from Old Oriental Medical Records in Korea (고전 임상의학의 통계적 요인 추출방안에 관한 연구)

  • Park, Gil-Ha;Park, Chan-Seok;Park, Lae-Su;Lee, Jeong-Hwa;Ahn, Sang-Woo
    • Korean Journal of Oriental Medicine
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    • v.13 no.3
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    • pp.45-51
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    • 2007
  • This Study is to propose the method about statistical factor from the old oriental medical record in Korea. This Study reviews the statistical analysis recently published in the old oriental medical books which are in the Research Report by the Korea Institute of Oriental Medicine at 2007. The results reveal a disease factors, prescription factors.medicines factors, population factors and historical factors by the statistics. The results show that the old oriental medical record for a information system need the interpreting with a information analysts, a statistics analysts and an oriental medical doctors.

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THE CHARACTERISTICS OF OUTPUT FOR INVERTER TYPE X-RAY GENERATOR

  • Lim, Hong-Woo;Han, Euam-Yong;Baek, Hyung-Lae;Lee, Seong-Kil
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.431-435
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    • 1998
  • This paper deals with the output characteristics of resonant PWM inverter type X-ray generators connected to different DC power units i.e. a single phase full bridge rectifier, a three phase full bridge rectifier and a power storage unit(PSU). The quality of X-ray beam depend on the pulsation waveforms of DC voltage supplied to the X-ray tulbe. In a X-ray generator, the waveforme of DC output voltage can be affected from hramonic distortion of DC input power. When a tube voltage waveform is distorded, the property of X-ray beam such as reproducibility, direcibility and doesage can be reduced. Therefore, we compared DC output waveforms and doesages with three thpe of DC power units and show the experimental results in this paper

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A Spatial Regularization of LDA for Face Recognition

  • Park, Lae-Jeong
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.10 no.2
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    • pp.95-100
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    • 2010
  • This paper proposes a new spatial regularization of Fisher linear discriminant analysis (LDA) to reduce the overfitting due to small size sample (SSS) problem in face recognition. Many regularized LDAs have been proposed to alleviate the overfitting by regularizing an estimate of the within-class scatter matrix. Spatial regularization methods have been suggested that make the discriminant vectors spatially smooth, leading to mitigation of the overfitting. As a generalized version of the spatially regularized LDA, the proposed regularized LDA utilizes the non-uniformity of spatial correlation structures in face images in adding a spatial smoothness constraint into an LDA framework. The region-dependent spatial regularization is advantageous for capturing the non-flat spatial correlation structure within face image as well as obtaining a spatially smooth projection of LDA. Experimental results on public face databases such as ORL and CMU PIE show that the proposed regularized LDA performs well especially when the number of training images per individual is quite small, compared with other regularized LDAs.

The Calcaneus Fracture of Joint Depression Type with Lateral Subtalar Dislocation (A Case Report) (외측 거골하 탈구를 동반한 관절 함몰형 종골 골절(1예 보고))

  • Lee, Seung-Yong;Kim, Gab-Lae;Ban, Tae-Seo;Kang, Jung-Woo
    • Journal of Korean Foot and Ankle Society
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    • v.13 no.1
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    • pp.106-108
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    • 2009
  • Calcaneus fracture with a subtalar dislocation are extremely rare. A case of a joint depression type calcaneus fracture with a lateral dislocation of the calcaneal posterior facet and tuberosity is presented. We treated it with open reduction and internal fixation with Steinmann pins and K-wires through limited posterior approach and obtained satisfactory radiographic and clinical outcome.

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