• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.2 no.1
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• pp.1-9
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• 2007

Objectives : This report was performed to evaluate the effect of flexion-extension technique in Bertolotti syndrome and scoliosis. Methods : We performed the flexion-extension technique to the patient with scoliosis and Bertolotti syndrome. Results : After flexion-extension technique the result of VAS of lumbago, cobb's angle were improved significantly. Conclusions : It is suggested that flexion-extension technique might be effective for the patient with scoliosis and Bertolotti syndrome.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.2 no.1
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• pp.49-57
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• 2007

Objectives : This study was performed to evaluate the effect of Bee Venom Acupuncture Therapy on Lumbar Spinal Stenosis. Methods : The patient was diagnosed as Lumbar Spinal Stenosis through Lumbar spine MRI and treated with Bee Venom Acupuncture Therapy and so on and measured of VAS and ODI score to evaluate treatment effects. Results and Conclusions : ROM of Lumbar, Milgram test and sensory test has improved. VAS and ODI score were also decreased.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.996-999
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• 2010

Aluminium extruded panel is the most important element for sound insulation in a express train. However, comparing with the flat plate with the same weight, the extruded panel shows remarkably low sound transmission loss above the 1st local resonance frequency, which is determined by the dimension of the core structure. Preceding study showed the possibility of the improvement of sound insulation performance by properly designing the core dimension. By the proper core design, local resonance frequency shifts to higher frequency region without any reduction of bending or torsional strength and without any weight increase. Based upon this result, this study investigates in detail the design modification of the core structure of the aluminium extruded panel used in a express train under development, in aspect of sound insulation. Design result is compared with those of other developed models.

• Proceedings of the KIEE Conference
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• 1996.07c
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• pp.1907-1909
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• 1996

In this paper, ultrsonic detection properties at a premolde joint utilized in a 23kV cables are studied. In a experiment a artificial defect within a joint and a measuring system are builded for generating discharges, gathering data about a detection properties, respectively. The experiment results show that one point detection is not allowed for monitoring a global status of a joint discharges and a detection sensitivity is less than 100pC. And also the attenuation and wave speed at the material of joint insulator are obtained.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.12
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• pp.2370-2378
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• 2009

The enhanced phase angle estimation algorithm is essential to supply the power stably under synchronizing with grid source. In this paper, we are proposed the novel phase angle estimation algorithm and verified the validity of proposed method as simulation with PSIM and experiments. We sort the harmonics element using high-pass filter(HPF) that have the cut-off frequency below basic element and make reverse d-q transformation. So, it can be restored the harmonics element at stationary axis, and we can get the fundamental voltage element of AC grid. Proposed PLL method have a rapid responsibility and a large margin at controller design than conventional method because it have a small phase delay and a sufficient controller gain margin. And, it can reduce the error of voltage rms value and axis transformation according to robust PLL algorithm against the harmonic and phase unbalance.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2012.05a
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• pp.65-67
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• 2012

The butt-joint system is widely used as the method of roof composite waterproofing system. However, there is stilll no objective research about proper distance, and proper structure associated with the performance in butt-joint system. In this research, we find proper distance and proper structure in butt-joint system through tensile strength test at joint, and comparative analyze with practical construction material of composite waterproofing sheet.

• The Journal of Korea CHUNA Manual Medicine
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• v.6 no.1
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• pp.137-146
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• 2005

Objective : We got a good effect on one patient who was diagnosed Fibromyalgia. Method : We treated 1 case of Fibromyalgia with acupuncture, moxibustion, herbal medication, and iontophoresis. We measured the VAS(Visual Analog Scale) and ROM(Range of motion) of Lumbar. Results : Patient's met complain is low back pain, pain and hemiparesis of night lower limb, and Pantalgia After treatment, most symptoms decreased and ROM, ambulation improved. VAS score changed from 10 to 2 for 52 days. Conclusion : The Fibromyalgia were successfully treated by acupuncture, moxibustion, herbal medication, and iontophoresis.

• The Journal of Korea CHUNA Manual Medicine
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• v.6 no.1
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• pp.147-156
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• 2005

Objective : The objective of this study is to evaluate the treatment effect of Band training in Osteoporotic Compression Fracture. Methods : Band training, Herb medicine and Acupuncture were performed for 56days admission in a patient who had Osteoporotic Compression Fracture. Result : ROM of Lumbar, Milgram test and Dorsiflexion has improved. VAS and ODI score were also decreased.

• Proceedings of the Safety Management and Science Conference
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• 2011.04a
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• pp.67-77
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• 2011

The railroad system must ensure not only the safety of facilities but also the prevention of natural and environmental disasters. The infrastructure must be strengthened in order to prevent rail damage by natural disasters and other causes. Thus, it would be able to prevent damage due to such natural factors like heavy rain and snow fall, wind, and catastrophic earthquakes. It seems that it would be the best way to install safety facilities throughout the entire length of a route, but one would not be able to provide for the costs involved in this approach. Therefore, these facilities must be installed at selected locations that is the most vulnerable to disasters. In this paper we propose the examples of both foreign and domestic methods in order to prevent from damages caused by the above-mentioned natural disasters and others.

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2002.05a
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• pp.136-136
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• 2002