• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 1999.11a
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• pp.252-259
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• 1999

This paper describes the development of cluster-aware application that provides advanced services such as automatic failover, faster error recovery, easy administration and scalability in clustering environment. For These, total system architecture and algorithm are proposed. For the verification this paper, socket application and cluster resource DLL, administration DLL for the application are implemented and tested. Using the microsoft cluster server, The individual failed services was relocated from one server to another. The result shows that allows applications on the original server to continue running, unaffected tv the failed service.

• The Korean Journal of Pain
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• v.24 no.1
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• pp.44-47
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• 2011

We report a case of failed epidural anesthesia despite successful identification of the epidural space, loss of resistance technique, hanging drop method and drip infusion. This case evaluated the use of computed tomography to confirm epidural catheter position, which showed the catheter accidentally positioned at the T2 lamina. Because epidural anesthesia can even after successful procedure using standardized techniques such as loss of resistance, we recommend performing the procedure under fluoroscopic guidance to improve success rate and patient safety.

• The Korean Journal of Pain
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• v.26 no.2
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• pp.199-202
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• 2013

Epiduroscopic laser discectomy and neural decompression (ELND) is known as an effective treatment for intractable lumbar pain and radiating pain which develop after lumbar surgery, as well as for herniation of the intervertebral disk and spinal stenosis. However, various complications occur due to the invasiveness of this procedure and epidural adhesion, and rarely, cranial nerve damage can occur due to increased intracranial pressure. Here, the authors report case in which double vision occurred after epiduroscopic laser discectomy and neural decompression in a patient with failed back surgery syndrome (FBSS).

• Acta Via Serica
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• v.5 no.1
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• pp.121-152
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• 2020

The article is a critical examination of the political developments in Armenia since the 'Velvet Revolution' of April-May 2018, when, on the wave of massive protests against the ruling regime, new young forces came to power raising amongst broad segments of population enormous enthusiasm and hopes about radical reforms that would lead to profound transformations in the political and socio-economic spheres. It contains a thorough analysis of underlying political processes in the country in an attempt to answer a number of topical questions, so important to get a deeper understanding of the situation in Armenia and in the South Caucasus region. Based on the analysis of the new authorities' performance against the acknowledged benchmarks and standards of democracy consolidation, such as: separation of powers, independence of the judiciary, good governance, transitional justice the author comes to the conclusion that they failed to achieve any breakthrough in the above-mentioned fields. On the contrary, as demonstrated by concrete examples, what occurred in Armenia was not a revolution but a mere regime change under the leadership of Prime Minister Pashinyan, who gradually has concentrated in his hands executive, legislative, and quasi-totality of the judicial branch of power.

• Journal of the Korean Society of Industry Convergence
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• v.24 no.6_1
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• pp.659-667
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• 2021

This paper develops the theory for a novel fault-tolerant, permanent magnet biased, 4-active-pole, double plane, homopolar magnetic bearing. The Lagrange Multiplier optimization with equality constraints is utilized to calculate the optimal distribution matrices for the failed bearing. If any of the 4 coils fail, the remaining three coil currents change via a novel distribution matrix such that the same opposing pole, C-core type, control fluxes as those of the un-failed bearing are produced. Magnetic flux coupling in the magnetic bearing core and the optimal current distribution helps to produce the same c-core fluxes as those of unfailed bearing even if one coil suddenly fails. Thus the magnetic forces and the load capacity of the bearing remain invariant throughout the failure event. It is shown that the control fluxes to each active pole planes are successfully isolated. A numerical example is provided to illustrate the new theory.

• Journal of the Korean Arthroscopy Society
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• v.10 no.1
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• pp.17-22
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• 2006

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2009.03a
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• pp.116-117
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• 2009

• Proceedings of the Korean Nuclear Society Conference
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• 2005.05a
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• pp.299-300
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• 2005

• Journal of Contemporary Eastern Asia
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• v.10 no.2
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• pp.41-46
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• 2011

• Proceedings of the Korean Nuclear Society Conference
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• 2003.10a
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• pp.237.1-237.1
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• 2003