• Title/Summary/Keyword: complex measure

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Consumer Aggression in Online Distribution of the Game; Motivation of Negative Consumer Behaviors

  • Eikjoe KIM;Jongwoo LEE
    • Journal of Distribution Science
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    • v.22 no.8
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    • pp.125-135
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    • 2024
  • Purpose: This paper aims to reveal similarities and differences in behaviors in negative consumer-brand relationships. Thus, we focused on consumer motivation which includes intensity and direction of behaviors. The motivation for negative customer behavior has been discussed in the context of brand hate, but there is only limited research that has tried to measure it using quantitative methods. We are trying to measure customers' motivation in negative consumer-brand relationships and reveal the relationship between in-field customers' negative behaviors. Research design, data, and methodology: We adopt Reactive-Proactive aggression to measure the motivation of customers' behaviors in a negative consumer-brand relationship. Also, to reveal the relationship between in-field behavior and customer aggression, we survey Korean game communities to reactive-proactive aggression and behaviors, whether they participate, in each observed behavior during the serial negative consumer movements that occurred in the Korean game industry. As a methodology, we run multinomial logistic regression. Results: We observed 9 behaviors in this case, and we found that reactive-proactive aggression is related to participation and motivation of these behaviors. Conclusions: We suggest the potential of reactive-proactive aggression as motivation for customers' complex negative behaviors. Based on this potential, we hope reactive-proactive aggression could be used to reveal similarities and differences in behaviors in negative consumer-brand relationships.

Dynamics of RNA Bacteriophage MS2 Observed with a Long-Lifetime Metal-Ligand Complex

  • Kang, Jung Sook;Yoon, Ji Hye
    • Journal of Photoscience
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    • v.11 no.1
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    • pp.35-40
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    • 2004
  • [Ru(2,2'-bipyridine)$_2$(4,4'-dicarboxy-2,2'-bipyridine)]$^{2+}$(RuBDc) is a very photostable probe that possesses favorable photophysical properties including long lifetime, high quantum yield, large Stokes' shift, and highly polarized emission. To evaluate the usefulness of this luminophore (RuBDc) for studying macromolecular dynamics, its intensity and anisotropy decays when conjugated to RNA bacteriophage MS2 were examined using frequency-domain fluorometry with a high-intensity, blue light-emitting diode (LED) as the modulated light source. The intensity decays were best fit by a sum of two exponentials, and the mean intensity decay time was 442.2 ns. The anisotropy decay data showed a single rotational correlation time (2334.9 ns), which is typical for a spherical molecule. The use of RuBDc enabled us to measure the rotational correlation time up to several microseconds. These results indicate that RuBDc can be useful for studying rotational diffusion of biological macromolecules.s.

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Experimental study of axial slit wall effect on Taylor-Couette flow (슬릿이 있는 Taylor-Couette 유동의 실험적 연구)

  • Lee, Sang-Hyuk;Kim, Hyoung-Bum
    • Proceedings of the KSME Conference
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    • 2007.05b
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    • pp.3183-3186
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    • 2007
  • Taylor-Couette flow may appear when the angular velocity is different between two concentric rotating cylinders. This kind of Taylor-vortex flow can be easily seen in lots of engineering problems. In general the geometries of rotating cylinders are generally complex in these cases. In this study, we investigated Taylor-Couette flow when the outer cylinder has the slit along the annulus. The radius ratio and aspect ratio of the experimental model used was 0.825 and 48, respectively. The depth of slits is 5mm and total 18 slits are azimuthally located along the inner wall of outer cylinder. We used PIV method to measure the flow and applied index matching method to resolve the complex geometry effect. The results show the model with slit has no stable wavy vortex region above Re=143.

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Microwave Rectangular Waveguide Measurement of the Engine Oil Dielectric Constant (초고주파 구형도파로를 이용한 엔진 오일의 유전율 측정)

  • Kim, Ki-Hoon;Kim, Young-Ju
    • Tribology and Lubricants
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    • v.27 no.3
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    • pp.156-161
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    • 2011
  • The rectangular waveguide technique can be used to measure the complex permittivity of dielectric material of various thickness and cross section. This paper presents the analysis system of engine oil permittivity at which deterioration of engine oil is measured at the X-band(8-12.5 GHz). The middle of the rectangular waveguide has engine oil case and is connected with VNA(Vector Network Analyzer) for the measurement of the transmission$(S_{21})$ and reflection$(S_11)$ and then the permittivity is extracted. The deterioration of engine oil is proved by the comparison with both the extracted data and reference data. As the additional research, This paper suggest that an accurate permittivity is considered by not only the wave guide length but the air gap between oil case and the waveguide.

Measurement Of The Engine Oil Relative Dielectric Constant With Respect To Capacitive Prove Dimension (정전용량 프로브 크기에 대한 엔진오일 상대 유전율 측정)

  • Kim, Ki-Hoon;Kim, Young-Ju
    • Tribology and Lubricants
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    • v.27 no.4
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    • pp.209-212
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    • 2011
  • The capacitive application(prove) can be used to measure the complex permittivity of dielectric material of various thickness and cross section. This paper presents that we designed the analysis system of engine oil permittivity to know the relation between the engine oil deterioration and the prove dimension. Each of the dimension of capacitive prove is changed and then electric capacity is measured by LCR {Inductance(L), Capacitance (C), and Resistance (R)} meter. The engine oil permittivity has extracted in the prove measurement. As the additional research, this paper suggest the best of the prove dimension for the permittivity measurement.

Linear instability or buckling problems for mechanical and coupled thermomechanical extreme conditions

  • Ibrahimbegovic, Adnan;Hajdo, Emina;Dolarevic, Samir
    • Coupled systems mechanics
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    • v.2 no.4
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    • pp.349-374
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    • 2013
  • In this work we propose a novel procedure for direct computation of buckling loads for extreme mechanical or thermomechanical conditions. The procedure efficiency is built upon the von Karmann strain measure providing the special format of the tangent stiffness matrix, leading to a general linear eigenvalue problem for critical load multiplier estimates. The proposal is illustrated on a number of validation examples, along with more complex examples of interest for practical applications. The comparison is also made against a more complex computational procedure based upon the finite strain elasticity, as well as against a more refined model using the frame elements. All these results confirm a very satisfying performance of the proposed methodology.

A XML Schema Matching based on Fuzzy Similarity Measure

  • Kim, Chang-Suk;Sim, Kwee-Bo
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.1482-1485
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    • 2005
  • An equivalent schema matching among several different source schemas is very important for information integration or mining on the XML based World Wide Web. Finding most similar source schema corresponding mediated schema is a major bottleneck because of the arbitrary nesting property and hierarchical structures of XML DTD schemas. It is complex and both very labor intensive and error prune job. In this paper, we present the first complex matching of XML schema, i.e. XML DTD, inlining two dimensional DTD graph into flat feature values. The proposed method captures not only schematic information but also integrity constraints information of DTD to match different structured DTD. We show the integrity constraints based hierarchical schema matching is more semantic than the schema matching only to use schematic information and stored data.

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Experimental study on the transfer in pulse tube (맥동관 내부의 열전달에 관한 실험적 연구)

  • 김민규;남관우;정상권;장호일;정은수
    • Progress in Superconductivity and Cryogenics
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    • v.2 no.1
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    • pp.45-50
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    • 2000
  • The present study has been conducted to observe the heat transfer under pulsating pressure and oscillating flow. The experimental apparatus was fabricated to measure the gas temperature, the wall temperature. the pressure and the instantaneous heat flux inside the pulse tube. The measured gas temperature and heat flux must be calibarated to compensate their finite time constant in the oscillating flow conditious. The experiment was performed from 1 Hz to 5 Hz. The phase difference between the instantaneous heat flux and the gas-wall temperature difference was clearly observed. The experimental heat fluxes were compared to the theroretical correlations such as Complex Nusselt Number Model(CNNM) and Variable Coefficient Model(CVM). The heat flux predisted by CNNM was always greater than that of VCM. The experiment confirmed the valisity of the VCM for the instantaneous heat flux under the pulsating pressure and oscillating flow in the warm end of the pulse tube.

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A theoretical calculation and measurements for Radar Cross Section of a moving complex metal target (복잡한 형태를 갖고 운동중인 금속제물체의 Radar Cross Section)

  • 진연강;윤현보
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.8 no.6
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    • pp.33-41
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    • 1971
  • This paper presents a theoretical calculation and measurements for the RCS(Radar Cross Scetion) value of a moving complex target, a small metal aircraft. The front view of aircraft on the drawing is divided in to several simple models to calculate its RCS value by the relative phase nlethod and the random phase method at the given frequency. The aircraft, cessna 305, inbounded from 170$^{\circ}$ to X international airport, is searched by radar with the wave length of 11cm to measure its miximum range which is necessary to determine the RCS value. The measured data are found to be similar to the theoretical values.

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Fabrication of Mixed Langmuir-Blodgett Ultra Thin Films with(N-eicosyl pyridinium)-TCNQ(1:2) Complex and Aracltidic acid ((N-eicosyl pyridinium)-TCNQ (1 : 2) 착체와 Arachidic acid의 혼합 Langmuir-Blodgett 초박막 제작)

  • Shon, Byoung-Chung;Jeong, Soon-Wook;Hwang, Kyo-Hyun
    • Journal of the Korean Applied Science and Technology
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    • v.7 no.1
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    • pp.77-80
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    • 1990
  • Using $CdCl_2$ buffer solution as subphase for LB films deposition, it was achieved successively to fabricate the Y-type mixed LB films of (N-eicosyl pyridinium)-TCNQ(1:2) complex and arachidic acid. By measure of U.V spectra and capacitance, deposition status was confirmed. Electrical conductivity was measured on a perpendicular direction of the LB films and in consequence of calculated was average $2.5\;{\times}\;10^{-13}$ - $2\;{\times}\;10^{-14}$ S/cm.