• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2006.04a
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• pp.139-144
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• 2006

Forest fire is due to difficulty in approaching the forest fire at the time of forest fire and quite a long of time required for post-fire investigation, accurate analysis of damages to the forest area caused by forest fire is difficult to obtain. Recently, In attempt to overcome such difficulty, many researches are using satellite images. Nevertheless, it is not easy for everyone to obtain the satellite image data, and additional researches in order to verify accuracy of such data are also required. Therefore, in this study for satellite image to about damages to the forest areas caused by forest fire using tile selected two data of spectral reflectance of the vegetation, gained by using a spectrometer. That is we wished to search about mistake that is apt to happen by one time eyesight observation by analyzing two datas that is used spectral radiometer 3 months and 6 months later and gets.

• Journal of the korean Society of Automotive Engineers
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• v.4 no.3
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• pp.48-55
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• 1982

In the present the strain gauge type torque transducers consist of solid shaft as sensor, slip ring, brush and bridge circuit as detecting circuit. So in the case of measuring the low-capacity torque, the error caused by technical mistake in mounting stain gauge on the small sensor and especially by contact resistance between slip ring and brush takes place more than the large sensor. Therefore in this study constant voltage in order to have no effect of contact resistance is supplied to the hollow shaft and Schrobron Bridge Circuit. Through the experiment good results were obtained as follows; linearity, hysterisis and zero drift as static characteristics is within 1% F.S respectively. Also when loading, zero drift is about 2% F.S.

• MALSORI
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• no.51
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• pp.17-37
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• 2004

The purpose of this dissertation is to make the general korean speakers to learn the standard pronunciations. But it is in existence that the obstructions of the command of the standard pronunciations. They are the mistake in the education course on the korean pronunciations, the teacher's capability and the mass communications's duplicity. To overcome this obstructions, we must concentrate our efforts on the propagation of the standard pronunciations. To propagate of the standard pronunciations we can take a several method. These are the presentation of the pronunciation mistakes, audio-visual teaching, the presentation of the pronunciation principles and the use of the korean dictionary. The standard pronunciations are different from the pronunciations of the general korean speakers in many respects. So we can't make an accurate estimate of the pronunciation's changes. No one knows what will happen in the future about the korean pronunciations. But we must teach the standard pronunciations to the general korean speakers. The standard pronunciations are offically valid in the present time.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.05a
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• pp.395-398
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• 2002

This study is to examine the safety by analizing the hardness of bed and the characteristic of vibration to improve basic efficiency of machine-tool of drill-cell which is a high line center. The mistake of existing design was shown through the analysis of 3-D and structure. The purpose of this paper is to draw up a plan to improve performance and to propose the design method through finding out the optimum by analyzing dynamic property of structure in a quantity-way by CAE for a quantity-analogy of dynamic property in design steps.

• Korean Journal of Digital Imaging in Medicine
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• v.11 no.1
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• pp.43-50
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• 2009

Geometry calculation Using Abdominal internal organ image from traditional laparoscopy or robotic surgery system we can make depth informations through measured 3D structure informations is very helpful to doctors, depth information is mare useful then others that use traditional laparoscopy or robotic surgery system to many doctors. however, traditional method are incomplete. less experienced doctors make much mare prohability of mistake. Hence, 3D information of organ is very helpful to the less experienced doctors. it will be greate role of reducing medical accidents and surgical time. We can get 3D informations using geometrical calculation method in robotic surgical system. also suggested method is needed in traditional surgical method without the need to create a new system, finally, We can get 3D information from traditional system without any new system, it take advantage in cost and create high efficiency. mare information will provided to many doctors.

• Journal of The Korean Society of Agricultural Engineers
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• v.46 no.5
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• pp.55-60
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• 2004

This study was performed to evaluate the early estimation of compressive strength of concrete using mineral admixture by refrigeration curing method. It was a method of early decision for the property of concrete after the curing age 28days through the refrigeration curing at $-18{\pm}3^{\circ}$ for five hours. The test result was fixed connection between the curing age 28days and 31hours by the compressive strength test through the standard curing and refrigeration curing. Accordingly, it can be reduced the mistake of construction work by forecasting the property of concrete through the refrigeration curing.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.5
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• pp.1027-1032
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• 2012

Importance of security is emphasized along with development of local area network such as NFC, Bluetooth, WiFi etc., but research that is worth watching eagerly up to now is not gone. This paper proposed SSEN algorithm for security elevation of approximation communication network. Proposed SSEN algorithm is algorithm that special cryptographic function creates own key without necessity. Also, SSEN achieving certification function additionally, did so that can have more than performance about the processing speed and mistake of service voluntarily.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.2015-2016
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• 2011

Detection of data cleaning bed of because method of communication uses AODV(Ad hoc On-demand Distance Vector) Zig-Bee communication though communication method is important being separated by several part structurally data monitor ring do it way to understand be. Although data that detect in transmitter will get into several kinds, data of each senses is detected by 4 - 20 mA conclusively and remainder data is consisted of temperature data. That is measured in transmitter in mast baud via conversion relation to do monitorring norm of data being decided to PC mistake of measured value so that can do control between enforcement compose. Speak that can manage equipment of cleaning bed by number of persons who write if detect data detection in wide cleaning bed through Zig-Bee communication and is easy because also administration of data consists of real time.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2002.10a
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• pp.57-60
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• 2002

Developed power off automatic stanch that keep floodgate upper stream water level changelessly for curtailment of operation by manpower and electricity lead-in equal early investment expense that manual system floodgate and electric motion floodgate have. Human strength does not need in floodgate operation as that power off automatic floodgate open and close floodgate automatically by buoyancy and also, another thing power does not need. Before establish floodgate, effect that get to waterway when behaves repair calculation of correct waterway and decide size of floodgate accordingly and establish floodgate must do examination analysis fussily. power off automatic floodgate night soil that get between countermeasure is the urgentest low-down in reply because can do mistake in operation by phenomenon and so on about water resources by different plate shape change through a model experiment examine closely need to.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.8
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• pp.99-103
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• 2009

This paper presents equipment that can exchange watt-hour meters without outage for customers, It is simpler than other methods to avoid outage during exchange. Furthermore, it has protective function to ensure customer's facility from engineer mistake. Because of good point mentioned above, it can improve efficiency and safety. Adopting developed equipment can ensure continuous electric power supply to customers.