• Title/Summary/Keyword: Light Sensitivity

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A Study on the Analysis of Color Image of the Web Pages of University Libraries (대학도서관 웹 페이지의 색채이미지 분석에 관한 연구)

  • Lee, Cheol-Chan
    • Journal of Korean Library and Information Science Society
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    • v.38 no.1
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    • pp.89-106
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    • 2007
  • This is to present the information and direction about color scheme image and adjective image in designing web page, by analysing the color image of our country's National University library's web page which is being operated now. The analysis method is to find the RGB of objective site through color emotion standard and to abstract the color chip. It is divided by color scheme image and adjective image. The scope of research is 41 National University libraries registered in National University Libraries Association. The result is that white and grey color of background and colors like light blue and green are main. In case of adjective image, nimble image and clear image was many. next is orderly bellowing image. and elegant image.

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New Continuous Variable Space Optimization Methodology for the Inverse Kinematics of Binary Manipulators Consisting of Numerous Modules (수많은 모듈로 구성된 이진 매니플레이터 역기구 설계를 위한 연속변수공간 최적화 신기법 연구)

  • Jang Gang-Won;Nam Sang Jun;Kim Yoon Young
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.28 no.10
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    • pp.1574-1582
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    • 2004
  • Binary manipulators have recently received much attention due to hyper-redundancy, light weight, good controllability and high reliability. The precise positioning of the manipulator end-effecter requires the use of many modules, which results in a high-dimensional workspace. When the workspace dimension is large, existing inverse kinematics methods such as the Ebert-Uphoff algorithm may require impractically large memory size in determining the binary positions of all actuators. To overcome this limitation, we propose a new inverse kinematics algorithm: the inverse kinematics problem is formulated as an optimization problem using real-valued design variables, The key procedure in this approach is to transform the integer-variable optimization problem to a real-variable optimization problem and to push the real-valued design variables as closely as possible to the permissible binary values. Since the actual optimization is performed in real-valued design variables, the design sensitivity becomes readily available, and the optimization method becomes extremely efficient. Because the proposed formulation is quite general, other design considerations such as operation power minimization can be easily considered.

Parenting Values and Practices among Muslim Parents in Indonesia

  • Park, Hye-Jun;Yi, Soon-Hyung;Lee, Kang-Yi;Kim, Bo-Kyung;Park, Sae-Rom
    • Child Studies in Asia-Pacific Contexts
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    • v.2 no.2
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    • pp.109-122
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    • 2012
  • Despite the fact that Muslims are fast becoming part of the world population, they are the least known group. Moreover, Muslims have been seriously misunderstood and negatively perceived because of several tragic events related to terrorist attacks or wars in the Middle East countries. In this light, the current study examined how parenting values and practices varied by importance of religion, gender, and generation, based on the questionnaire data collected from 312 Muslim fathers and mothers living in Jakarta, Indonesia. The most salient result of this study was that the religion was at the center of everyday lives. The importance of religion in their lives clearly translated in their parenting styles by engaging in religious practices with their children. At the same time, Muslim parents in Indonesia had a high level of expectation for their children's education and making happy family life as well as being faithful as Muslim. This study contributed to promoting cultural sensitivity towards Muslims by examining Indonesian Muslim parents' parenting values and practices.

THE CURRENT STATUS OF THE AKARI MID-INFRARED ALL-SKY DIFFUSE MAPS

  • Amatsutsu, Tomoya;Ishihara, Daisuke;Kondo, Toru;Kaneda, Hidehiro;Oyabu, Shinki;Yamagishi, Mitsuyoshi;Nakamichi, Keichiro;Sano, Hidetoshi;Onaka, Takashi
    • Publications of The Korean Astronomical Society
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    • v.32 no.1
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    • pp.25-27
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    • 2017
  • We are creating all-sky diffuse maps from the AKARI mid-infrared survey data with the two photometric bands centered at wavelengths of 9 and $18{\mu}m$. The AKARI mid-infrared diffuse maps achieve higher spatial resolution and higher sensitivity than the IRAS maps. In particular, the $9{\mu}m$ data are unique resources as an all-sky tracer of the emission of polycyclic aromatic hydrocarbons (PAHs). However, the original data suffer many artifacts. Thus, we have been developing correction methods. Among them, we have recently improved correction methods for the non-linearity and the reset anomaly of the detector response. These corrections successfully reduce the artifact level down to $0.1MJy\;sr^{-1}$ on average, which is essential for discussion on faint extended emission (e.g., the Galactic PAH emission). We have also made progress in the subtraction of the scattered light caused in the camera optics. We plan to release the improved diffuse maps to the public within a year.

Water Quality Modeling and Response Assessment in the Yellow Sea and the East China Sea (황해 및 동중국해의 수질예측과 응답성 평가)

  • Lee, Dae-In
    • Journal of Environmental Impact Assessment
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    • v.21 no.3
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    • pp.445-460
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    • 2012
  • In order to evaluate and predict the environmental impact of the low-trophic-level ecosystem to environmental changes in the Yellow Sea and the East China Sea, an ecological modelling study was undertaken. Simulation results of average distribution patterns and concentrations of water quality factors during the summer by the model were acceptable. Phytoplankton and remineralization rate of organic matter were very important parameters by a sensitivity analysis. Water quality factors showed high values in the estuary of the Yangtze River and in the West and South Sea of Korea and low values in the central area of the Yellow Sea. There is a plume of high values, especially nutrients, off the mouth of the Yangtze that expands or contracts with changes in the discharge strength. Characteristics of responses of water quality factors vary for different scenarios of environmental change, such as land-based pollution sources and atmospheric forcing. It is suggested that changes of light intensity, discharges of input sources, and wind play an important role in the marine ecosystem.

Design and evaluation of small size six-axis force/torque sensor using parallel plate sturcture (병렬판구조를 이용한 소형 6축 힘/토크센서의 설계 및 특성평가)

  • Joo, Jin-Won;Na, Gi-Su;Kim, Gap-Sun
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.22 no.2
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    • pp.353-364
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    • 1998
  • This paper describes the design processes and evaluation results of a small-sized six-axis force/torque sensor. The new six-axis force/torque sensor including S-type structure has been developed using a parallel plate structure as a basic sensing element. In order tominimize coupling errors, the location of strain gages has been determined based on the finite element analysis and the connections of strain gages have been made such that the bridge circuit with 4 strain gages becomes balanced. Several design modifications result in a similar strain sensitivity for six-axis forces and moments, and the reduced coupling errors of 2.6% FS between each forces and moments. Calibration test results show that the six-axis load cell developed which has light weight of 135g and the maximum capacities of 196 N in forces and 19.6 N.m in moments is estimated to be within 7.1% FS in coupling error.

Conceptual Design Optimization of Tensairity Girder Using Variable Complexity Modeling Method

  • Yin, Shi;Zhu, Ming;Liang, Haoquan;Zhao, Da
    • International Journal of Aeronautical and Space Sciences
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    • v.17 no.1
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    • pp.29-36
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    • 2016
  • Tensairity girder is a light weight inflatable fabric structural concept which can be used in road emergency transportation. It uses low pressure air to stabilize compression elements against buckling. With the purpose of obtaining the comprehensive target of minimum deflection and weight under ultimate load, the cross-section and the inner pressure of tensairity girder was optimized in this paper. The Variable Complexity Modeling (VCM) method was used in this paper combining the Kriging approximate method with the Finite Element Analysis (FEA) method, which was implemented by ABAQUS. In the Kriging method, the sample points of the surrogate model were outlined by Design of Experiment (DOE) technique based on Optimal Latin Hypercube. The optimization framework was constructed in iSIGHT with a global optimization method, Multi-Island Genetic Algorithm (MIGA), followed by a local optimization method, Sequential Quadratic Program (SQP). The result of the optimization gives a prominent conceptual design of the tensairity girder, which approves the solution architecture of VCM is feasible and efficient. Furthermore, a useful trend of sensitivity between optimization variables and responses was performed to guide future design. It was proved that the inner pressure is the key parameter to balance the maximum Von Mises stress and deflection on tensairity girder, and the parameters of cross section impact the mass of tensairity girder obviously.

Paint Spray Mass Spectrometry for the Detection of Additives from Polymers on Conducting Surfaces

  • Paine, Martin R.L.;Barker, Philip J.;Blanksby, Stephen J.
    • Mass Spectrometry Letters
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    • v.3 no.1
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    • pp.25-28
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    • 2012
  • Paint Spray is developed as a direct sampling ionisation method for mass spectrometric analysis of additives in polymer-based surface coatings. The technique simply involves applying an external high voltage (5 kV) to the wetted sample placed in front of the mass spectrometer inlet and represents a much simpler ionisation technique compared to those currently available. The capabilities of Paint Spray are demonstrated herein with the detection of four commercially available hindered amine light stabilisers; TINUVIN${(R)}$770, TINUVIN${(R)}$292, TINUVIN${(R)}$123 and TINUVIN${(R)}$152 directly from thermoset polyester-based coil coatings. Paint Spray requires no sample preparation or pre-treatment and combined with its simplicity requiring no specialised equipment makes it ideal for use by non-specialists. The application of Paint Spray for industrial use has significant potential as sample collection from a coil coating production line and Paint Spray ionisation could enable fast quality control screening at high sensitivity.

Immunohistochemistry of Paraffin-embedded Tissues by Super-signal Induction Method (슈퍼시그날 증폭 기술에 의한 파라핀 매몰조직의 면역조직화학염색)

  • Yun Young Gab;Lee Jang Cheon;Jang Seon Il
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.4
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    • pp.1154-1158
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    • 2004
  • The classical ABC (avidin-biotin peroxidase complex) method for immunohistochemistry in the paraffin-embedded tissues bring into being disadvantage such as low sensitivity of antigen detection and highly background. The biotinyl-tyramide conjugation recently introduced for sensitive immunohistochemistry was applied to light microscopy in paraffin-embedded pancreatic and liver tissues. The protocol consists of an indirect method in which 4-5㎛ tissue sections are reacted successively within a specific primary antibody, followed by a biotinylated secondary antibody, streptavidin-horseradich peroxidase (HRP), and then finally with biotinyl-tyramide. The labeling obtained for insulin and collagen antigen tested in pancreatic and liver tissues, respectively, was found to be highly specific with the labeling for each antigen confined to its particular cellular compartment. In this study, fish (flounder) serum was specially applied to remove nonspecific binding. Background levels and nospecific deposition of the staining were negligible. This results suggest that super-signal induction method by biotinyl-tyramide conjugate can readily applied to antigen detection of the paraffin-embedded tissues.

Improvement of Aspergillus niger 55, a Raw Corn Meal Saccharifying Enzyme Hyperproducer, through Mutation and Selective Screening Techniques (옥수수 生 전분 당화 효소 高 생산성 변이주 개발)

  • Oh, Sung-Hoon;O, Pyong-Su
    • Microbiology and Biotechnology Letters
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    • v.19 no.2
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    • pp.140-146
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    • 1991
  • Mutation experiments were performed to select the mutant of Aspergillus niger 55, which had lost almost all the ability to produce transglucosidases but retained that of high productivity of raw meal saccharifying enzyme, by means of successive induction with N-methyl-N'-nitro-N-nitrosoguanidine(MNNG), ultraviolet(UV) light, and ${\gamma}$-rays. Also, we used the mutant enrichment techniques, such as liquid culture-filtration procedure and differential heat sensitivity of conidia, in order to increase the possibility of obtaining a mutant. The glucoamylase productivity of mutant PFST-38 was 11 times higher than that of the parent strain. The mutant PFST-38 was morphologically identical to the parent strain, except for the size of conidia, the tendency to form conidia and the lenght of conidiophore. Asp. niger mutant PFST-38 apeared to be useful for the submerged production of the raw corn meal saccharifying enzyme.

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