• 한국식품영양과학회지
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• 제36권1호
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• pp.124-130
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• 2007

본 연구에서는 한식당에 대한 외국인 고객의 가격민감성을 측정하였으며, 그 결과 한식당 유형별로 가격민감성이 다르게 측정되어 가격이 각 외식업체의 제품과 서비스의 품질과 가치를 특징짓는 것으로 나타났다. 이에 따라 소비자의 서로 다른 요구에 의해 준거 가격이 복잡해지며, 소비자의 구매 목적에 따라서도 영향을 미치는 것을 알 수 있었다. 특히, 외국인 국적별로 가격민감성을 비교한 결과, 각 세분 시장별로 가격민감성에 차이를 나타냈는데, 전반적으로 일본인이 다른 세분시장에 비해 가격에 민감한 경향을 보이는 것으로 측정되었다. 이러한 가격민감성측정 모델은 다른 타겟 시장의 민감성과 각각의 수용가격범위를 측정할 수 있으므로, 외식업체 운영자들은 어떤 시장이 얼마의 최소한의 가격으로 구매 행동을 하지 않으며, 어떤 시장에 그 가격에 맞는 가치를 제공하도록 노력을 기울일 것인지 파악해야 한다. 또한 가격과 품질사이의 단순한 상관관계에 의해서만 소비자들의 행동을 설명하기 엔 너무 많은 변수들과 상황이 존재하고 있다. 따라서 구매 동기,사회적 환경 등의 요인, 시간제한, 계절적 효과, 물리적 환경, 구매 주체, 분위기 등의 상황적 변수들이 가격 민감 행동과 상호 작용 가능한 잠재적 요인들이므로 가격민감성과의 상관관계 분석도 가능할 것이다. 그러나 가격은 동질적인 제품 또는 동질적인 상황에서 소비되는 제품과 서비스에 대해서는 그 중요성이 떨어지고, 브랜드가 품질의 지각과 가치의 지각, 그리고 구매의도에도 긍정적인 영향을 미치게 되므로 외식기업들은 궁극적으로 이러한 순간에 다른 브랜드와 차별화 될 수 있는 한식 브랜드 요인들을 강조하여 경쟁적인 이익과 이윤을 증가시켜야 함을 잊지 말아야 할 것이다. 이와 함께 소비자의 기호와 욕구를 충족시킬 수 있는 가격과 가치 부여만이 고객 만족과 재 방문, 나아가 충성 고객을 이끌 수 있으며, 외식기업의 이를 활용한 가격전략 수립이 우선되어야 한다.

• 한국대기환경학회지
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• 제26권2호
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• pp.161-176
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• 2010

We examined high ozone episodes observed during the intensive measurement periods (11 May~21 June and 30 July~11 August 2009) in the Gulf of Gwangyang. During that period, there were a few events (or days) in which 1 hr averaged ozone concentrations were greater than 100 ppbv. The analysis of ozone budget and photochemical characteristics related to the ozone production was carried out using a photochemical box model. Ozone sensitivity to $NO_x$ and VOCs was also examined in the study area during the measurement period. Diurnal variation of ozone during the episodes was similar to that of odd hydrogen radicals ($HO_2,CH_3O_2$, and $RO_2$), suggesting significant correlation with photochemical production of ozone during the episodes. In general, ozone concentration in the study area during the measurement period was sensitive to VOCs, whereas ozone was sensitive to $NO_x$ under certain conditions. Ozone sensitivity assessment using a radical budget analysis and $NO_x$/VOCs-control strategy was consistent with that using indicator species ($H_2O_2/HNO_3$ ratio).

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1987년도 한국자동제어학술회의논문집; 한국과학기술대학, 충남; 16-17 Oct. 1987
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• pp.174-178
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• 1987

In the design of reference model based STC (self-tuning controllers), parameters of the controllers are determined not from the true plant but from the estimated model. In this paper, we suggest a power spectrum estimation method for visualling the sensitivity of the closed loop system without knowing the explicit original plant.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 춘계학술대회 논문집
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• pp.96-100
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• 1997

The shadow moire is one of the optical techniques which is able to give contour lines of an object with respect to a master grating plane. The moire patterns are issued from the superposition of a master grating and its shadow projected on the surface of an object. In case of the classical shadow moire method, the sensitivity was a few tenths millimeters. generally, it is difficult to use a phase shift method in shadow moire because it is impossible to obtain uniform phase shifts on the whole field. But in this study we use the fact that if the depth of object is much less than the distance between the observer and the master grating, and the object is displaced perpendicularly to the grating plane, phase shifts are almost uniform. Finally we obtained a better resolution by using a phase shift procedure and applied the phase shifting shadow moire to three dimensional shape measurement.

• 대한기계학회논문집A
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• 제24권5호
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• pp.1271-1280
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• 2000

A sensor placement technique to identify structural parameter was developed. Experimental results must be acquired to identify unknown dynamic characteristics of a targeting structure for the comparison between analytical model and real structure. If the experimental environment was not equipped itself properly, it can be happened that some valuable information are distorted or ill-condition can be occurred. In this work the index to determine exciting points was derived from the criterion of maximizing parameter sensitivity matrix and that to choose measurement points was from that of preserving the invariant of sensitivity matrix. This idea was applied to a compressor hull structure to verify its performance. The result shows that the selection of measurement and excitation points using suggested criteria improve the ill-conditioning problem of inverse type problems such , as model updating.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2003년도 봄 학술발표회 논문집
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• pp.388-399
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• 2003

Light losses in optical fibers are investigated by a fiber optic OTDR (Optical Time Domain Reflectometry) sensor system to develop fiber optic probes for structural strain measurement. The sensing fibers are manufactured 3 kinds of fibers: one is single mode fiber, and second is multimode fiber, and the third is low-cladding-index fiber. Fiber bending tests are performed to determine the strain sensitivity according to the strain of gage length of optical fibers. In the result of this experiments, the strain sensitivity of the single mode fiber was shown the highest value than others. The fiber optic strain probe was manufactured to verify the feasibility of the structural strain measurement. In this test, the fiber optic strain probe of the OTDR sensor could be easily made by the single mode fiber.

• 소음진동
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• 제2권2호
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• pp.99-106
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• 1992

The complex Young's modulus of a viscoelastic material can be obtained as a function of frequency from the measurements of relative motion between the two ends of a bar-type specimen. Non-resonance method is usually used to obtain the complex Young's modulus over wide range of frequency including resonance points, while in resonance method information at resonance frequencies only is used. However, the complex Young's modulus obtained by the non-resonance method is often unreliable in the anti-resonance frequency regions because of the measurement noise problems. In this study, the effects of the random measurement errors on estimating the complex Young's modulus are studied in the aspect of sensitivity, and how to obtain the reliable frequency region for a given measurement error level is shown. The usable frequency regions in determining the complex Young's modulus are represented by a non-dimensional parameter formed with the wave length and specimen length.

• 전력전자학회논문지
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• 제25권3호
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• pp.162-170
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• 2020

In this paper, we report our study of the current measuring technique by implementing a pick-up coil in the PCB pattern instead of the current measuring sensor in a power converter using a WBG device. The proposed PCB pattern coil structure has a higher mutual inductance value than the conventional pattern by constructing the coil using the multi layer board. It has high sensitivity and is configured without additional process outside the PCB. In the current measurement, the integrator is measured by integrating the coil at the back end and the current waveform measured using proposed pick-up coil is confirmed by comparing it with the original current waveform through DPT simulation.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 춘계학술대회 논문집
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• pp.283-286
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• 2002

In fiber optic sensor, the error of the measurement is influenced by the surface roughness of the target and surroundings, especially the outside light. To reduce or modify this error, the sensitivity of the fiber optic sensor and the noise change by the surface roughness of the target should be known. The purpose of this paper is to observe the sensitivity of the fiber optic sensor and the noise according to the surface roughness of the target.

• 소음진동
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• 제9권6호
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• pp.1152-1156
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• 1999

In this study, a fiber optic air-backed mandrel hydrophone has been constructed and performance of acoustic signal detection has been measured. The hydrophone is based on a Mach-Zehnder interferometer with 35 m of sensing fiber. The sensitivity is measured up to -128 dB re rad/$\mu$ Pa in range from 1.4 kHz to5 kHz. A system with this design of hydrophone may be applied to detect low frequency underwater acoustic signals.