• Korean Institute of Interior Design Journal
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• v.20 no.4
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• pp.3-10
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• 2011

In the phase of an architectural designing, the Pinakothek der Modeme in Munich is considered that it is influenced by the Altes Museum in Berlin. The critical elements were composed of the classification of Tominaka and my points of view. Two buildings were analyzed for comparison by six elements, such as, a spatial construction, an organization of plan, an organization of section, a composition of elevation, a method of construction and a composition of mass. The results of the analysis were that the design of the Pinakothek der modeme was influenced by the Altes Museum as follows: 1)the use of square and circle in the composition of plan, 2)the use of a curtain of columns and a formation of the transitional space between columns and front wall, 3)the location and function of the main stairs and the inner court, 4)the arrangement of exhibition halls, 5)the covering of dome, 6)the unification of spaces of different floors through the rotunda. This study may be helpful for any architects who make a decision of the method and the range of reference to some other building in the beginning of design.

• 한국방재학회:학술대회논문집
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• 2008.02a
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• pp.735-738
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• 2008

Various characteristics of creek were not considered in designing creek for a long time. As result of that, a lot of reverse functions have been present in creek. In this study, a presentation of creek damage was investigated and differences river form creek design standards were analyzed. The damage of creeks accounts for 37.3 percent of total damage of rivers over the last 6 years. Besides, government should spend more money in restoring creeks. Considering that maintenance rate of domestic creeks is 37 %, counterplan should be prepared to prevent the damage of creeks. There are many kinds of causes in destroyed creek round. Specially, most damage was secondary that was caused by increase of flood elevation according to decrease in conveyance, local scour around structures, and failures because of inappropriate structures such as bridge, culvert, crossbeam, and drop in creek. These destroy types are in bend area. However, current creek design standards do not suggest solutions to prevent damages. Currently, there are no standards for bridge, and appropriate hight and width of culvert. Standards for crossbeam and drop could not reflect characteristics of creek. Therefore, it is need to improve the creek design standards for appropriate design and construction. That could improve flood control and prevention of creeks.

• Earthquakes and Structures
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• v.3 no.3_4
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• pp.413-434
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• 2012

This paper presents a displacement-based seismic design method with damage control, in which the targets for the considered performance level are set as displacements and a damage distribution is proposed by the designer. The method is based on concepts of basic structural dynamics and of a reference single degree of freedom system associated to the fundamental mode with a bilinear behaviour. Based on the characteristics of this behaviour curve and on the requirements of modal spectral analysis, the stiffness and strength of the structural elements of the structure satisfying the target design displacement are calculated. The formulation of this method is presented together with the formulations of two other existing methods currently considered of practical interest. To illustrate the application of the proposed method, 5 reinforced concrete plane frames: 8, 17 and 25 storey regular, and 8 and 12 storey irregular in elevation. All frames are designed for a seismic demand defined by single earthquake record in order to compare the performances and damage distributions used as design targets with the corresponding results of the nonlinear step by step analyses of the designed structures subjected to the same seismic demand. The performances and damage distributions calculated with these analyses show a good agreement with those postulated as targets.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.699-703
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• 2004

The autopilot system targets decreasing labor, working environment, service safety security and elevation of service efficiency. Ultimate purpose is minimizing number of crew for guarantee economical efficiency of shipping service. Recently, being achieving research about Course Keeping Control, Track Keeping Control, Roll-Rudder Stabilization, Dynamic ship Positioning and Automatic Mooring Control etc. which compensate nonlinear characteristic using optimizing control technique. And application research is progressing using real ship on actual field. Relation of Rudder angle which adjusted by Steering Machine and ship-heading angle are non-linear. And, Load Condition of ship acts as non-linear element that influence to Parameter of ship. Also, because the speed of a current and direction of waves, velocity and quantity of wind etc. that id disturbance act in non-linear form, become factor who make service of shipping painfully. Therefore, service system of shipping requires robust control algorithm that can overcome nonlinearity. In this paper, Using GA algorithm,design autopilot system of ship that could overcome the non-linear factor of ship and disturbance and examined result through simulation.

• Journal of Veterinary Clinics
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• v.18 no.1
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• pp.35-43
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• 2001

Present study was undertaken in order to document early renal ultrasonographic changes of gentamicin nephrotoxicosis and to show the value of renal ultrasonography as a contributory means of early diagnosis of acute renal failure in dogs. The experimental design was a randomized complete block design with six treatments in two blocks (gentamicin-treated & saline-treated). Acute renal failure was induced by toxic dosage of gentamicin (30 mg/kg) and saline solution sham equivalent in volume to that of the toxic dosage of gentamicin (1.5-3ml). Subjective visualization of increased renal cortex was visible as homogenous echoes that were hypoechoic relative to the surrounding tissues, whereas the renal medulla was anechoic to slightly hypoechoic. After treatment, the renal cortex was hyperechoic relative to the surrounding tissue. Increased renal cortex echogenicity was associated with significant nephrotoxicosis and was superior to serum creatinine elevation in nephrotoxicosis detection. Urine GGT was superior to other clinicopathological data utilized in the diagnosis of nephrotoxicosis. Based on the above results, increased renal cortex echogenicity seemed to be of use in detecting of acute renal failure.

• Journal of the Korea Institute of Military Science and Technology
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• v.5 no.3
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• pp.62-76
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• 2002

This paper describes the design of a Coordinates Tracking algorithm for EOTS and its error analysis. EOTS stabilizes the image sensors such as FLIR, CCD TV camera, LRF/LD, and so on, tracks targets automatically, and provides navigation capability for vehicles. The Coordinates Tracking algorithm calculates the azimuth and the elevation angle of EOTS using the inertial navigation system and the attitude sensors of the vehicle, so that LOS designates the target coordinates which is generated by a Radar or an operator. In the error analysis in this paper, the unexpected behaviors of EOTS that is due to the time delay and deadbeat of the digital signals of the vehicle equipments are anticipated and the countermeasures are suggested. This algorithm is verified and the error analysis is confirmed through simulations. The application of this algorithm to EOTS will improve the operational capability by reducing the time which is required to find the target and support especially the flight in a night time flight and the poor weather condition.

• Journal of the Korea Institute of Military Science and Technology
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• v.19 no.4
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• pp.415-423
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• 2016

A TOF type LADAR is utilized for unmanned systems(UGV, UAV, USV, etc.), precision digital elevation maps, and electronic fences. Electronical and optical signal processing techniques are melted in LADAR sensor systems. In this study important factors are examined for high reliability sensor development. By considering those factors, hardwares and softwares of a test LADAR is developed and tested, We report the practical design tips, test results, and future works for better LADAR system development.

• Journal of the Korean Institute of Navigation
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• v.19 no.3
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• pp.1-10
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• 1995

The effect of the submerged high speed vessel on the ocean wave is made clear in the point of hydrodynamics view. In connection to the design of high speed ship, the flow analysis is carried out to predict the pressure distribution for drag and lift. The purpose of the research is to help the preliminary design of the economic hull form advancing under the ocean wave by estimating the resistance performance and the wave behaviour. In the present study, more efficient numerical approaches are investigated for the viscous flow analysis around a submerged NACA0012 hydrofoil with the laminar and incompressible fluid. Through the numerical simulation, it is found that the new numerical method becomes more efficient primarily due to the fact that the wave elevation is reasonably developed.

• Proceedings of the KIEE Conference
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• 2007.11c
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• pp.179-182
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• 2007

The Design and Optimization of a low-profile antenna for the Satellite Digital Audio Radio System(SDARS) using a Non-Dominated Sorting Genetic Algorithm(NSGA) is presented. a fairly omni-directional elevation gain pattern over 60 degrees < q <60 degrees are obtained. The average value of the LCP gain pattern is approximately 2 dBic. The heights of the antennas are less than 0.251. The cross polarized signal level is approximately 12 dBic less than the co-polarized signal level.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.121.3-121
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• 2001

The movement of a ship is important for DBS(Direct Broadcasting Satellite) Receiving Antenna control algorithm design on shipboard. Especially, turning of ship is essential factor to affect the angle change of azimuth and elevation. Therefore, to track the satellite stably, we need the tracking method considering turning rate of ship. In this paper, we propose an effective satellite tracking algorithm for DBS receiving antenna on shipboard. In the proposed method, when a ship is turned, it selects one of the Multi tracking modes - Normal mode, Low speed mode, Middle speed mode and High speed mode - according as turning rate to be calculated by using Gyro sensor.