• Aerospace Engineering and Technology
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• v.6 no.1
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• pp.29-34
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• 2007

On the stage of combustor development process, many aerodynamic and combustion characteristics are found out not by only ideal design concept but by only useful tests which are top confidentiality of technically advanced engine development companies, RR and GE, etc. In this study, test techniques of one of that company are analysed and described about some unique tests for test low emission combustors.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2004.11a
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• pp.176-179
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• 2004

Arthroscopy of the stiff elbow joint is a technically difficult procedure because of the decreased joint space of the elbow joint. even to experienced surgeons. Problems encountered include limited access of instrument to the intra-articular ,pace and an increased risk of cartilage injury in the contracted elbow joint. This study describes a novel transarticular approach for elbow arthroscopy that allow, the safe and effective creation of the proximal medial and lateral portals.

• Proceedings of the Korea Contents Association Conference
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• 2004.11a
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• pp.84-90
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• 2004

NPR style makes it possible that 3D animation images can be used as an art direction by escaping from the cold and realistic image. And these expression methode are developed technically and, many kinds of animation styles are being created by directing various 2D materials and lighting system.

• Journal of the Korean Operations Research and Management Science Society
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• v.22 no.4
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• pp.183-219
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• 1997

In this research, the intensity of solar energy, which was injected to the different angle plane every hour day by day, was technically documented and quantitatively analyzed through actual observations. In order to group every days into days with similar intensity, graph was drawn with respect to time for every dary and each area value under the curve was calculated. Then, the search for grouped days having similar intensity curve patterns was carried out. In order to maximize the efficiency of solar energy systems, the optimum incident angle of absorber plate was derived.

• Journal of the Korean Professional Engineers Association
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• v.42 no.1
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• pp.49-53
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• 2009

Wind energy development and wind farm construction request multi-disciplinary study and coordination to pursuit economically and technically feasible project that may deliver a viable business model. This paper is to provide the study and coordination procedure with key management factors about the wind energy resource assessment and engineering design for EPC(Engineering, Procurement and Construction) contract for the successful business development.

• Communications of the Korean Mathematical Society
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• v.10 no.1
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• pp.251-259
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• 1995

In 1952, British physiologists Hodgkin and Huxley [4] derived a model that describes the conduction of the nervous impulse in the optical nerve of a squid. The mathematical analysis of the Hodgkin-Huxley equations is technically very difficult, because of the complicated nonlinear functions in the equations. In the early 1960's FitzHugh and Nagumo [2], [9] derived a simpler formulation which retains most of the qualitative features of the original system, and yet is more amenable to analytical manipulations.

• Journal of Communications and Networks
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• v.8 no.2
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• pp.163-168
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• 2006

This paper presents one possible approach for liberalization of the radio spectrum based around spectrum usage rights (SURs) which are technology and usage neutral. This is challenging technically because of the complexity of defining rights which are flexible and technology-neutral while retaining sufficient safeguards against interference. The work presented here is part of an ongoing process of defining and testing SURs. Of com is currently considering SURs, though is not committed to implementing them at this stage, and will issue further discussion documents on this area in due course.

• Proceedings of the KSR Conference
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• 2003.10b
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• pp.111-116
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• 2003

The Permanent Way consisting of rails and sleeper laid on ballast is a technically and economically viable solution. After two decades of targeted research and development activities Slab Track turned out to be a reasonable option on special fields. Slab Track proves that especially under extreme condition and loads - they reliably help stability and a long service life of track. Technical and experimental solution of slab track are particularly underlined. This paper presents a few Results of the experiments of SFRC slab tracks under fatigue load.

• Journal of Energy Engineering
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• v.2 no.2
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• pp.231-236
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• 1993

The feasibility of Magnetohydrodynamic(MHD) Ship Propulsion using Superconduction Magnets is reviewed in light of relent advances in high-temperature superconducting. The propulsion using a screw propeller in the noise reduction has it's own limitation. The epochal noiseless MHD propulsion method which does not have this disadvantage is studying nowadays. The subject of a marine MHD as propulsion has been examined before and was found to be interesting because of relatively low magnetic flux densities. It is demonstrated that the MHD propulsion is technically interesting with high magnetic flux density. The development of large-scale magnets using the high-temperature superconductor now under development could make it practical to construct submersibles for high-speed and silent operation.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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• 2000.02a
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• pp.125-127
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• 2000

In this study, we performed long lange power transmission expansion planning for conceptual design of HTS power cable in Seoul area. Since the HTS power cable has the high power transmission density and low loss characteristics in comparison with conventional power cables, the HTS power cable is introduced between the downtown and the suburbs in the future system in order to verify the feasibility of the HTS power transmission cables technically and to encourage the research activity in the area.