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한창수,김용구,이낙우,김 탁,김해중,김 현,조숙행 대한생물치료정신의학회 2001 생물치료정신의학 Vol.7 No.1
To investigate the relationship between premenstrual mood changes and anxiety, and mood symptoms in the perinatal period , questionaire survey was carried out. There was no significant correlation between premenstrual symptom scale value and Edinburgh postpartum depression scale value. And theme was no relationship between premenstrual symptom scale value and state anxiety inventory scale value in the perinatal period. This findings suggest that premenstrual mood changes are not directly correlated with mood changes in the perinatal period.
조용원,안응섭,이재강,김일환 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.A
Counters for various kinds of bank notes require high-speed distinctive point extraction and recognition for notes. In this paper we propose a new point extraction and data extraction method from specific parts of a bank note representing the same color. The recognition algorithm uses a back-propagation neural network that has coordinate data input. The proposed algorithm is designed to minimize recognition time.
Kim, Min-gu,Kim, Yong-Ho,Kim, Hong-Lae,Park, Chul Woo,Joe, Yun-Haeng,Hwang, Jungho,Kim, Yong-Jun IOP 2010 JOURNAL OF MICROMECHANICS AND MICROENGINEERING - Vol.20 No.3
<P>Wall loss is a major cause of deteriorating performance and reliability in air-based miniaturized analytical devices and it can cause unexpected changes in structures and operational conditions. Therefore, there is a great demand for the reduction of the wall loss on airborne particle processing chips. This paper demonstrates a wall loss reduction technique using an electrodynamic disturbance. The proposed technique is applied to a serpentine microchannel for a feasibility test, and then it is applied to a virtual impactor, which is an inertial airborne particle classifier. An electrodynamic disturbance is generated by applying ac electric potentials to an interdigitated electrode pair integrated at the bottom of the microchannel. In the serpentine microchannel, the application of electric potentials from 0 to 3 kV at 1 kHz caused the wall loss to decrease exponentially as a function of the aerodynamic diameter. When the electric potential was 3 kV, the wall loss decreased by 17.2 ± 1.8% for particles with a 0.96 µm diameter. In the virtual impactor, the wall loss curve at 1 kV and 1 kHz had an estimated maximum reduction of 11.6% compared to the wall loss curve at 0 V. Furthermore, the collection efficiency curves approached the ideal cut-off curve as the applied electric potential was increased from 0 to 1 kV.</P>
Sung Yong Park,Dae Hee Kim,Han Bum Joe,Ji Young Yoo,Jin Soo Kim,Min Kang,Yong Woo Hong 대한마취통증의학회 2012 Korean Journal of Anesthesiology Vol.62 No.5
Background: During beating heart surgery, the accuracy of cardiac output (CO) measurement techniques may be influenced by several factors. This study was conducted to analyze the clinical agreement among stat CO mode (SCO), continuous CO mode (CCO), arterial pressure waveform-based CO estimation (APCO), and transesophageal Doppler ultrasound technique (UCCO) according to the vessel anastomosis sites. Methods: This study was prospectively performed in 25 patients who would be undergoing elective OPCAB. Hemodynamic variables were recorded at the following time points: during left anterior descending (LAD) anastomosis at 1 min and 5 min; during obtuse marginal (OM) anastomosis at 1 min and 5 min: and during right coronary artery (RCA) anastomosis at 1 min and 5 min. The variables measured including the SCO, CCO, APCO, and UCCO. Results: CO measurement techniques showed different correlations according to vessel anastomosis site. However, the percent error observed was higher than the value of 30% postulated by the criteria of Critchley and Critchley during all study periods for all CO measurement techniques. Conclusions: In the beating heart procedure, SCO, CCO and APCO showed different correlations according to the vessel anastomosis sites and did not agree with UCCO. CO values from the various measurement techniques should be interpreted with caution during OPCAB. Background: During beating heart surgery, the accuracy of cardiac output (CO) measurement techniques may be influenced by several factors. This study was conducted to analyze the clinical agreement among stat CO mode (SCO), continuous CO mode (CCO), arterial pressure waveform-based CO estimation (APCO), and transesophageal Doppler ultrasound technique (UCCO) according to the vessel anastomosis sites. Methods: This study was prospectively performed in 25 patients who would be undergoing elective OPCAB. Hemodynamic variables were recorded at the following time points: during left anterior descending (LAD) anastomosis at 1 min and 5 min; during obtuse marginal (OM) anastomosis at 1 min and 5 min: and during right coronary artery (RCA) anastomosis at 1 min and 5 min. The variables measured including the SCO, CCO, APCO, and UCCO. Results: CO measurement techniques showed different correlations according to vessel anastomosis site. However, the percent error observed was higher than the value of 30% postulated by the criteria of Critchley and Critchley during all study periods for all CO measurement techniques. Conclusions: In the beating heart procedure, SCO, CCO and APCO showed different correlations according to the vessel anastomosis sites and did not agree with UCCO. CO values from the various measurement techniques should be interpreted with caution during OPCAB.