• Structural Engineering and Mechanics
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• v.6 no.3
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• pp.245-257
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• 1998

This paper present an analysis which may be used to obtain a rational design of a system of inclined piles used in preventing downhill creep of unsaturated clay formations. It uses two simple and relatively easy to measure parameters (an estimate of the maximum downhill creep together with a knowledge of the depth of the so called active zone) to calculate the required section size and the optimal spacing (pitch) of the piles for a desired efficiency of the system as a whole. Design charts are provided to facilitate the process.

• Transactions of The Korea Fluid Power Systems Society
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• v.6 no.4
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• pp.16-23
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• 2009

The major system of an agricultural shuttle power-shift tractor is the transmission, using power-shift. Because the shifting performance depends on the hydraulic control system, the most important aspect of the optimization is the design of the hydraulic control system. This study was conducted to develop the simulation model of hydraulic control system for the shuttle power-shift transmission by using Easy5 software. Bench test was conducted to verify the simulation. Also, the design parameters which influence the pressure modulation characteristics were investigated.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.171-174
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• 1998

A class of non-parametric detectors based on quantized m-dimensional noise sample space is introduced. Due to assuming the nongaussian noise as a channel model, it is not easy to design the detector through estimating the unknown functional form of noise; instead equiprobably partitioning m-dimensional noise into a finite number of regions, using a VQ and quantiles obtained by RMSA algorithm is used in this paper to design detectors. To show the comparison of performance between single sample detector and system suggested here, Monte-Carlo simulations were used. The effect of signal pulse shape on the receiver performance is analyzed too.

• Journal of Advanced Marine Engineering and Technology
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• v.9 no.4
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• pp.339-347
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• 1985

Precise measurement of flowrate is considered as an important measuring factor in mechanical and chemical experiment. Although there are many methods to measure flowrate, Float type flowmeter is widely used because of its easy attachment to piping and high measuring precision. To design the precise float type flowmeter, much design information such as tapered-tube dimensions, float size, float shape and float material is required. In this paper, fundamental design theory for float type flowmeter according to the given flowrate range is suggested and compensation coefficients of volumetric and weight flowrate for water, R-113 and air are calculated.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.347-348
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• 2012

An approach to design and analyze an RCD snubber for flyback converters will be introduced. The resonance coordinate provides an easy way to understand the transient period of the switch turn-off and helps to design and analyze the RCD snubber easily. An example of analyzing RCD snubber losses for 40W prototype will be given and experimented to show the effectiveness of the suggested method.

• Journal of Digital Convergence
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• v.16 no.11
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• pp.303-312
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• 2018

The purpose of this study is to design the easy payment service research model and to find the influencing effect on the intention for the reuse of easy payment service by analysing the factors such as the social influence, the promotion condition, the security and the convenience as UTAUT model has. Also the research model employs the trust and the user satisfaction as parameters. The result shows that even though people feel the trust due to the convenience by the social influence, it has a negative influence on the user satisfaction if the risk recognized in the easy payment service and the weakness in the security are anticipated. The results of this study are academically meaningful as they established the research model for the easy payment service and the theoretical basis of the easy payment service area; they have provided the various practical implications.

• Journal of Korean Society for Quality Management
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• v.27 no.3
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• pp.67-78
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• 1999

In parameter design introduced by Taguchi, we analyze a performance measure, so called SN ratio. The SN ratio is a function of the expected loss due to the variation of quality characteristic. In this paper, an easy way for developing performance measures is presented, which can be used to control several quality characteristics simultaneously in parameter design. To develop such multivariate performance measures, the transformation method of the expected loss and combining techniques are employed. And the analysis of real empirical data for an application of the proposed method is also presented.

• Proceedings of the Korea Concrete Institute Conference
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• 2000.10a
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• pp.223-228
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• 2000

The principle objective of this study is to make an integrated development environment with an expert system for designing RC retaining walls. The program has several advantages over conventional design tools and characteristics of functions. It is easy to use and to obtain the technical reports with minor efforts. Various possible design alternatives can be compared, then the most optimal design can be selected in terms of construction cost and structural safety.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.24 no.62
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• pp.69-77
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• 2001

A current design trend of a vending machine is pursuing easy manufacturing and large capacity of holding cans. Therefore this study aims to ergonomically redesign vending machine and to analyze the motion of awkward posture to take out cans. Using Vision 3000 system, after investigating which motion can affect users, a new ergonomically designed vending machine, which was based on anthropometric data and guideline for control panel and exit of cans. New design shows a significantly improved usability and less stress. With new ergonomically designed vending machine at figure 3 can give a benefit for both users and manufactures.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.529-535
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• 2008

Recently a rolling stock has been requiring more convenience facilities for passenger as well as satisfied the basic functions. The convenience facilities design take into consideration safety factor, convenience and easy accessible for disable passenger. In a point of view, convenience facilities should be considered and designed as well as related safety. This paper describes points to be considered on design with related to convenience facilities and safety factor of Diesel Multiple Unit for Intercity through the IRISH DMU.