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Development of the Scale to Measure the Logistics Service Quality (물류서비스품질의 측정을 위한 척도개발에 관한 연구)

  • Kang, Gi-Du;Ahn, Seung-Ho;Chai, Myung-Ki
    • Journal of Korean Society for Quality Management
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    • v.36 no.2
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    • pp.45-58
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    • 2008
  • The importance of quality logistics service to the enterprises has kept growing considering the fierce competitions. It also asks for the sound definition and the scale explaining the construct of logistics service quality. The current study attempted to identify the construct of logistics service quality and develop the scale to measure it. Various qualitative and quantitative methodologies have been employed in order to provide the solid theoretical and psychometrical foundation of the proposed scale. In so doing, the conceptual definition of Logistics Service quality has been proposed and the 127-item scale measuring the construct of logistics service quality has been developed and found to be reliable and valid.

The Characteristics of Painted Coating on Aluminum Sheet by Sending Conditions (알루미늄 판재의 센딩조건에 따른 도장특성 평가)

  • Yoon, Han-Ki;Choi, Seok-In;Lee, Jong-Ho
    • Journal of Ocean Engineering and Technology
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    • v.25 no.1
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    • pp.44-48
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    • 2011
  • Researchers suggested painted coating characteristics of aluminum sheet by various sending condition. Painted coating is used to protect the surface of the blocks from the interior and exterior. It is also used to enhance the value of automobiles and ship materials. This process makes the materials surface for protection and elegance. Although analysis of the roughness and critical scratch load of painted coating is important, the effects of this material have not progressed much. In this study, the characteristics of painted coating in the other conditions of the polished aluminum sheet were investigated. The results of both various conditions and initial roughness values were almost similar to final values after painted coating.

Glioblastoma Mimicking Herpes Simplex Encephalitis

  • Nam, Tai-Seung;Choi, Kang-Ho;Kim, Myeong-Kyu;Cho, Ki-Hyun
    • Journal of Korean Neurosurgical Society
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    • v.50 no.2
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    • pp.119-122
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    • 2011
  • We report a case of 70-year-old man with glioblastoma presenting as acute encephalitic illness. The patient exhibited sudden onset of cognitive impairment and headache for 2 days. Initial brain MRI showed left temporal lobe hyperintensity, and cerebrospinal fluid cytology revealed a mild pleocytosis. The patient had initially improved after medical treatment with a presumptive diagnosis of herpes simplex encephalitis (HSE). After 8 months, the patient complained of recurrent seizures. A follow-up brain MRI revealed marked increases in size and surrounding perilesional edema in the left temporal lesion on T2-weighted images and a new contrast-enhancing lesion on gadolinium-enhanced T1-weighted images. Stereotactic brain biopsy revealed a glioblastoma. The atypical encephalitic presentation of glioblastoma should be considered if definitive evidence for the diagnosis of HSE cannot be obtained.

Multi-view Image Rendering on Tabletop Display (테이블탑 디스플레이에서의 다중 시점 영상 가시화)

  • Kang, Sun-Ho;Jung, Soon-Ki
    • Proceedings of the Korean Information Science Society Conference
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    • 2011.06b
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    • pp.249-251
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    • 2011
  • 본 논문에서는 테이블탑 디스플레이에서 하나의 화면에 그룹에 따라 서로 다른 영상을 보여주는 시스템을 제안한다. 시간차가 나는 두 영상을 이용해 안경의 사용자 그룹에게는 하나의 영상만을 보여주고 비사용자 그룹에게는 두 영상의 합성을 보여주어 두 그룹의 테이블탑 사용자에게 기존의 영상에 서로 다른 문자 영상을 합성하여 보여줄 수 있다. 본 논문에서 제안하는 흑백출력법과 매몰법은 3차원 디스플레이를 이용한 문자 출력하는 두가지 방법이다. 흑백출력법은 안경을 사용한 그룹은 흑백문자로 표현하고 비사용자 그룹은 백색으로 표현하여 보여주는 방법이다. 매몰법은 안경 사용자 그룹이 보는 영상을 매몰시켜 그 위에 안경 비사용자 그룹이 볼 영상을 추가하는 방법이다.

Monitoring of tool conditions in high-speed machining of die material (금형강의 고속가공시 공구상태의 감시)

  • Hur, Hyun;Lee, Ki-Young;Jeong, Yung-Ho;Lee, Deug-Woo;Kim, Jeong-Suk;Hwang, Kyung-Hyun
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.131-134
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    • 1995
  • The high efficiency and accuracy in machining the die material can be abtained in high speed machining, so it is necessary to analyze the mechanism of high speed cutting process : cutting force, flank wear. The tool dynomometer with high natural frequency is newly developed. With this device, the mechanism of high speed cutting process is investigated according to speed and feedate.

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Low temperature-operating NiO-CoO butane gas sensors

  • Jung, Dong-Ho;Choi, Soon-Don;Min, Bong-Ki
    • Journal of Sensor Science and Technology
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    • v.17 no.4
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    • pp.303-307
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    • 2008
  • $NiO,\;Cu_2O,\;Mn_2O_3$ and $Cr_2O_3$ as p-type semiconductors were added in CoO with 15 wt.% ethylene glycol binder and measured the butane gas sensing characteristics. The highest sensitivity is obtained for the NiO-CoO sensors. CoO-20 at.% NiO sensor with 15 wt.% ethylene glycol binder sintered at $1100^{\circ}C$ for 24 h exhibits high sensitivity of 90 % to 5000 ppm butane gas at the sensor temperature of $250^{\circ}C$, compared to low sensitivities at the low operating temperature for commercial sensors. Response and recovery times are, respectively, within few seconds and 1min in the static flow system, indicating rapid adsorption and desorption of butane gas on sensor surface even at this low temperature.

Designing a Adaptive Advisement Learning of the LMS applying the SCORM2004 S&N and the Traffic-Signal-Lamp Metaphor (SCORM2004 S&N과 교통 신호 메타포를 적용한 LMS에서의 적응적 조언 학습 설계)

  • Bang Chan-ho;Kim Ki-Seok
    • Proceedings of the Korean Information Science Society Conference
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    • 2005.07a
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    • pp.76-78
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    • 2005
  • e-Learning분야에서 표준안으로 인정받고 있는 ADL의 SCORM에서 발표한 SCORM2004 Sequencing&Navigation은 동일한 학습객체를 사용하여 학습객체간의 다양한 상호관계를 설계, 적용할 수 있게 하였다. 그리고, 학습자와 학습객체와의 개별 상호작용을 추적, 평가하여 학습흐름을 안내함으로써 개별 적응적 조언 학습의 가능성을 보여주었다. 본 논문에서는 SCORM1.2기반의 LMS에 SCORM2004 S&N과 적응적 탐색을 지원하는 교통신호메타포를 구현하고 실제적으로 적용하고자 한다. 이로써, 학습설계에 따라 정해진 학습객체 상호간의 S&N규칙이 개별 학습자의 학습상태와 평가에 의해 다른 순서로 전달하거나 생략되어지고, 학습상태를 시각적으로 제공함으로써 적응적 조언 학습 설계에 대한 가능성을 실현할 수 있었다.

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Design of Self-Organizing Networks with Competitive Fuzzy Polynomial Neuron (경쟁적 퍼지 다항식 뉴론을 가진 자기 구성 네트워크의 설계)

  • Park, Ho-Sung;Oh, Sung-Kwun;Kim, Hyun-Ki
    • Proceedings of the KIEE Conference
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    • 2000.11d
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    • pp.800-802
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    • 2000
  • In this paper, we propose the Self-Organizing Networks(SON) based on competitive Fuzzy Polynomial Neuron(FPN) for the optimal design of nonlinear process system. The SON architectures consist of layers with activation nodes based on fuzzy inference rules. Here each activation node is presented as FPN which includes either the simplified or regression Polynomial fuzzy inference rules. The proposed SON is a network resulting from the fusion of the Polynomial Neural Networks(PNN) and a fuzzy inference system. The conclusion part of the rules, especially the regression polynomial uses several types of high-order polynomials such as liner, quadratic and modified quadratic. As the premise part of the rules, both triangular and Gaussian-like membership functions are studied. Chaotic time series data used to evaluate the performance of our proposed model.

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A Study on Efficient Routing using Clustering for Ad-Hoc Network (클러스터링을 이용한 효율적인 라우팅에 관한 연구)

  • Yang, Hwan-Seok;Choi, Ho-Jin;Lee, Woong-Ki
    • Annual Conference of KIPS
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    • 2003.05b
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    • pp.1317-1320
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    • 2003
  • Ad hoc network는 유선 백본없이 이동 노드들로 구성된 네트워크로서 이동 노드들의 움직임이 빈번히 발생하기 때문에 클러스터간 노드들의 재가입이 계속되므로 네트워크의 안정성을 유지하기 어렵다 그러므로 최대한 네트워크 토폴로지의 안정성을 유지하는 것이 필요하다. 본 논문에서는 ad hoc network를 구성하는 노드들을 1-level 클러스터로 형성하여 효율적인 라우팅 방법을 제안한다. 그리고 클러스터 리더의 변화를 최소화하기 위해 novel 방법을 사용하고 플러딩을 줄이기 위해 제한된 broadcast 메커니즘을 이용하였다.

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An INS Filter Design Considering Mixed Random Errors of Gyroscopes

  • Seong, Sang-Man;Kang, Ki-Ho
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.262-264
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    • 2005
  • We propose a filter design method to suppress the effect of gyroscope mixed random errors at INS system level. It is based on the result that mixed random errors can be represented by a single equivalent ARMA model. At first step, the time difference of equivalent ARMA process is performed, which consider the characteristic of indirect feedback Kalman filter used in INS filter. Next, a state space conversion of time differenced ARMA model is achieved. If the order of AR is greater than that of MA, the controllable or observable canonical form is used. Otherwise, we introduce the state equation of which the state variable is composed of the ARMA model output and several step ahead predicts of that. At final step, a complete form state equation is presented. The simulation results shows that the proposed method gives less transient error and better convergence compared to the conventional filter which assume the mixed random errors as white noise.

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