• Journal of Korean Society for Quality Management
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• v.32 no.4
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• pp.265-273
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• 2004

We got the growth distance curve by spline smoothing method with observed marketing data and the growth velocity curve by the derivation of the growth distance curve. Using this growth velocity curve, we defined the several characteristic points which describe the variation of marketing data. In this paper, to specify several patterns of marketing data, we suggested characteristic function by using these characteristic points. In addition, we applied characteristic function to the seventeen brands of electric home products data.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2005.05b
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• pp.15-18
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• 2005

As a display becomes large recently, Acquisition of high luminance and Luminance uniformity is becoming difficult in the existing CCFL or EEFL backlight system. So, study for a performance enhancement has enforced. but lamp development of flat type is asked for high luminance and a luminance uniformity security in of LCD and area anger trend ultimately. In this paper, we changed a tip shape of an electrode for production by the most suitable LCD backlight surface light source, and confirmed discharge characteristic along discharge gas pressure and voltage, and confirmed electric field distribution and discharge energy characteristic through a Maxwell 2D simulation. Therefore the discharge firing voltage characteristic showed a low characteristic than a rectangular type and round type in case of electrode which used tip of a triangle type, and displayed a discharge electric current as a same voltage was low.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.12a
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• pp.35-38
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• 2006

As a display becomes large recently, Acquisition of high luminance and Luminance uniformity is becoming difficult in the existing CCFL or EEFL backlight system. So, study for a performance enhancement has enforced. but lamp development of flat type is asked for high luminance and a luminance uniformity security in of LCD and area anger trend ultimately. In this paper, we changed a tip shape of an electrode for production by the most suitable LCD backlight surface light source, and confirmed discharge characteristic along discharge gas pressure and voltage, and confirmed electric field distribution and discharge energy characteristic through a Maxwell 2D simulation. Therefore the discharge firing voltage characteristic showed a low characteristic than a rectangular type and round type in case of electrode which used tip of a triangle type, and displayed a discharge electric current as a same voltage was low.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.39 no.10
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• pp.959-965
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• 2011

A modeling and power simulation of a small UAV's electric propulsion systems is described. Each power source is modeled and simulated in Matlab/Simulink and it is compared flight test data during 4 hr 30 min with simulation results about 200 W electric propulsion system using fuel cell and battery as a main power sources. In result, it is properly simulated performance and dynamic characteristic of each electric power source. Through this, it is revealed that the simulation is available as a means of predicting power characteristic variation for electric propulsion systems of different class.

• Journal of Acupuncture Research
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• v.21 no.5
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• pp.101-111
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• 2004

Objective : Assuming that the characteristic of meridian system has been similar to this of electric potentials in human body and that measurements of electric potential at well(井穴) and sea (合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 13 patients with Lumbago due to strain and contusion(좌섬요통<挫閃腰痛>, LSC), to find out the characteristic of meridian system in patients with LSC. Methods : Electric potentials of well and sea points in the meridians in twenty one patients with the pain in the lion diagnosed as LSC were repeatedly measured by physiograph(PowerLab). Measurements of those electrical potentials were analyzed by factor analysis. Results : The electric potentials of WSBTM at the left side were divided into four factors. On the other hand those at the right side Were divided into four factors. Conclusion : In conclusion, their electrical potentials at the left and right side were factors which are different from each side. Thus electrical potentials of well and sea points might be the representative meridian to show their characteristics.

• Korean Journal of Oriental Medicine
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• v.8 no.2 s.9
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• pp.85-93
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• 2002

Objectives:Assuming that the characteristic of meridian system has been similar to that of electric potentials in human body and that measurements of electric potential at well(井穴) and sea(合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 17 patients with loin lesions, and pain of loin and lower extremities (腰脚痛, LWLE), to find out the characteristic of meridian system in patients with loin lesions. Methods:Electric potentials of well and sea points in the meridians in 17 patients with LWLE diagnosed by both CT or MRI and self view on pain at loin and lower extremities were repeatedly measured by physiograph(PowerLab). Measurements of those electrical potentials were analyzed by factor analysis. Results The electric potentials of WSBTM at the left side were divided into four factors. On the other hand those at the right side wert divided into three factors.

• Korean Journal of Oriental Medicine
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• v.9 no.1
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• pp.103-111
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• 2003

Objectives : Assuming that the characteristic of meridian system has been similar to this of electric potentials in human body and that measurements of electric potential at well(井穴) and sea(合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 16 patients with Lumbago due to the kidney deficiency(腎虛腰痛, LKD), to find out the characteristic of meridian system in patients with LKD. Methods : Electric potentials of welt and sea points in the meridians in twenty one patients with the pain in the lion diagnosed as LKD were repeatedly measured by physiograph(PowerLab). Measurements of those electrical potentials were analyzed by factor analysis. Results : The electric potentials of WSBTM at the left side were divided into five factors. On the other hand those at the right side Were divided into t1vee factors. Conclusions : In conclusion, their electrical potentials at the left and right side were four different factors search side. Thus electrical potentials of welt and sea points might be the representative meridian to show their characteristics.

• Korean Journal of Acupuncture
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• v.19 no.2
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• pp.1-12
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• 2002

Objectives : Assuming That the Characteristic of Meridian System Has Been Similar to This of Electric Potentials in Human Body and That Measurements of Electric Potential at Well and Sea Points in Branches of the Twelve Meridians Will Be Representative of Measurements of the Twelve Meridians, to Measure the Electric Potentials in Healthy Volunteers(HG), Patients Diagnosed As a Cerebral Infarction(CG), a Arrhythmia(AG), a Other Intervertebral Disc Disorder(IG), and a Joint Disorder(JG), and Then to Find Out the Characteristic of Biophysical Meridian System, Finally to Compare with the Results of the Electric Potential in Those Groups. Methods : We Selected Who HG Were Diagnosed by a Blood Test, Urine Examination and Differentiation of Syndromes by Five Viscera among Volunteers, CG by CT and Wind-Syndrome Caused by Hyperactivity of the Liver-Yang, AG by EKG, CT, and Deficiency or the Heart Blood, IG by X-ray or CT and Pain in Waist, and JG by X-ray and Knee Pain. Their Electric Potential of Well and Sea Points in the Meridians Were Measured by hysiograph. Results and Conclusions : Measurements Were Analyzed by Factor Analysis, Analysis of Variance, and Logistic Regression Model, We Obtained That Most of the Results, In Conclusion, Hold Good for the Classical Meridian Doctrine.

• Journal of Acupuncture Research
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• v.21 no.6
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• pp.111-120
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• 2004

Objective : Assuming that the characteristic of meridian system has been similar to this of electric potentials in human body and that measurements of electric potential at well(井穴) and sea (合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 13 patients with Facial Hemiparalysis (구안와사<口眼蝸斜>, FH), to find out the characteristic of meridian system in patients with AK. Methods : Electric potentials of well and sea points in the meridians in twenty one patients with the pain in the lion diagnosed as FH were repeatedly measured by physiograph(PowerLab). Measurements of those electrical potentials were analyzed by factor analysis. Results : The electric potentials of WSBTM at the left side were divided into five factors. On the other hand those at the right side Were divided into four factors. Conclusions : In conclusion, their electrical potentials at the left and right side were each other five and four factors. Thus electrical potentials of well and sea points might be the representative meridian to show their characteristics.

• Progress in Superconductivity and Cryogenics
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• v.8 no.3
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• pp.59-62
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• 2006

For electric power applications of Bi-2223/Ag superconducting tapes, a transport characteristic is important issue. A transport characteristic is strongly depends on the magnitude and direction of external time-varying magnetic field. To verify a effect of external magnetic field, we manufactured a prototype magnet and obtained transport characteristics with respect to the magnitude, the direction and the frequency of external magnetic field. The data acquired in this paper will be used as a source for the study of HTS electric power applications which is supposed to carry on.