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  • 1
    Electronic Resource
    Electronic Resource
    Spin wave instability in single crystal Zn–Y hexagonal ferrite at 8.93 GHz (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 4454-4469 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Resonance saturation (RS), subsidiary absorption (SA), and parallel pump (PP) spin wave instability threshold measurements have been made on single crystal easy plane disks of Mn substituted Zn–Y type hexagonal ferrite materials at 8.93 GHz and room temperature. For each configuration, "butterfly curves" of the spin wave instability threshold microwave field amplitude hcrit as a function of the static field applied in the disk plane were obtained. The previous theory for these instability processes was also extended to include planar magnetocrystalline anisotropy and a wave vector k dependent spin wave linewidth, ΔHk. The RS butterfly curve had a characteristic "V" shape with a rounded minimum at the ferromagnetic resonance (FMR) field. The nominal ΔHk needed to fit the data at the ferromagnetic resonance field was 7 Oe, but the butterfly curve shape indicated a k-dependent ΔHk. The butterfly curves for the PP configuration were flat at low field and then diverged rapidly at the cutoff field for first order instability processes, Hcut. The SA butterfly curves were also flat over the field interval for first order processes, but then decreased as the field was increased above Hcut. This decrease is attributed to the onset of second order processes due to the proximity of the FMR and additional magnetostatic mode peaks as one moves to and then above Hcut. The flat portions of the PP and SA butterfly curves could be fitted with a single k-independent ΔHk value of 18 Oe. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1352689
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  • 2
    Electronic Resource
    Electronic Resource
    New design of the variable angle infrared spectroscopic ellipsometer using double Fourier transforms (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 2677-2683 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new type of incidence-angle-variable infrared spectroscopic ellipsometer working in the 2100–10 000 wave number range has been designed and constructed. For the system, the analyzer and polarizer were driven by two microstepping motors having hollow shafts and rotating synchronously with a speed ratio of 2:1, i.e., A=2P. The incidence angle can be varied from 30° to 90° with an accuracy of 0.01°. The doubled Fourier transforms as both functions of the wave number and the azimuthal angles of the polarizer and analyzer were carried out and integrated in the system. Two sets of ellipsometric parameters measured in the experiment have been used to test the data self-consistency of the system. In data reduction, the error arising from the slight anisotropy of the stray light was corrected. In application, the complex dielectric function of the Au film was measured with a data accuracy better that 1% in the entire spectral range. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150674
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  • 3
    Electronic Resource
    Electronic Resource
    RATIONAL INDUSTRIAL WATER REUSE RATIOS (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 40 (2004), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : This work begins by defining rational water use, and then discusses important factors that most strongly influence it. A general model is then developed to enable factories to quantify the ratio of rational industrial water reuse based on the least cost method. The model is established to minimize the cost of water with reference to gross water use and three subsystems - the intake, reuse, and discharge of industrial water. Discharge cost is determined using data from a 1997 survey of 38 factories, and reuse costs are ranked and expressed by a step function. The model is verified using data from a typical semiconductor factory in northern Taiwan's Hsinchu Science Based Industrial Park, whose effective rational water reuse ratio is about 38 percent. A sensitivity analysis shows that improving water reuse technology is the most important factor in determining the rational water reuse ratio, and the price of water is the second most important. When water costs over NT$30 (New Taiwan Dollar, US$1 = NT$34) per cubic meter, increasing reuse becomes significant. The model provides a step towards the scientific management of industrial water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.2004.tb01060.x
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  • 4
    Electronic Resource
    Electronic Resource
    Using an HRM pattern approach to examine the productivity of manufacturing firms - an empirical study (2003)
    Bingley : Emerald
    International journal of manpower 24 (2003), S. 299-318 
    Details
    ISSN: 0143-7720
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Manufacturing firms are always faced with the problem of promoting operational performance and labor-force management. The utilization of human resources is closely correlated with operations and production performance. This study investigates the correlation between human resource management (HRM) and business performance of large-scale manufacturing firms in Taiwan. First, 16 subjects of HRM are designed to survey the importance level and achievement level of HRM by the sample firms. Productivity indices are also defined to measure business performance. Based on the survey, four critical HRM factors including 12 subjects are extracted by factor analysis. The difference between importance level and achievement level of subjects contained in each factor is examined. Furthermore, considering importance and achievement levels of HRM as features, fuzzy clustering analysis is employed to categorize the firms into four patterns. With various HRM characteristics, each pattern has different business performance in terms of productivity. Using a pattern approach, these findings can aid the firms in each pattern to improve their productivity by improving their HRM strategies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01437720310479750
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  • 5
    Electronic Resource
    Electronic Resource
    Using fuzzy approaches to evaluate quality improvement alternative based on quality costs (2002)
    Bingley : Emerald
    International journal of quality & reliability management 19 (2002), S. 122-136 
    Details
    ISSN: 0265-671X
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Quality cost is usually considered as a means to measure the quality level in a quality system. Since the interrelationship among quality cost components is complex, a general quantitative model for describing their relationship is not easy to construct for improving the quality. In the assessments of quality cost, some hidden quality costs, such as the goodwill loss due to lost customers' reliability, are often neglected in the existing analysis methods. This may lead to reaching a sub-optimal decision. In addition, the assessments of quantitative quality cost items are usually approximated, and therefore are imprecise in nature. Based on these considerations, we propose fuzzy approaches to evaluate quality improvement alternatives because of its fuzzy nature. An evidence fusion technique, namely Choquet fuzzy integral, is employed to aggregate the quality cost information. A composite index is determined to find the best quality improvement alternative. Finally, a numerical example is used to demonstrate the applicability of the approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02656710210413471
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  • 6
    Electronic Resource
    Electronic Resource
    Investigating resource utilization and product competence to improve production management: An empirical study (2001)
    Bingley : Emerald
    International journal of operations & production management 21 (2001), S. 1180-1194 
    Details
    ISSN: 0144-3577
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Proposes an approach to improving production management (PM) of a firm through examining its resource utilization and product competence. To understand the status of PM in Taiwan, evaluates the achievement levels of 14 production management subjects from 50 large-scale manufacturing firms. The subjects are further classified into four planning ranges of PM. Then productivity measures of these firms for resource utilization and product competence are determined. Two groups of patterns with distinct PM characteristics are found through a fuzzy clustering analysis based on resource utilization and product competence. Significant correlation has been found between resource utilization and product competence and PM. The PM patterns with good performance in terms of resource utilization and product competence are considered targets for firms of other patterns. The ways of adjusting PM for these firms of other patterns are then described in terms of the characteristics of the target patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/EUM0000000005922
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  • 7
    Electronic Resource
    Electronic Resource
    Water resources Groundwater maintains dune landscape (2004)
    [s.l.] : Nature Publishing Group
    Nature 432 (2004), S. 459-460 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Badain Jaran desert in western Inner Mongolia in China has a unique landscape that contains 72 lakes, with a total water surface area of 23 km2, and the world's highest stationary sand dunes, which are up to 500 m tall — despite the prevailing dry and windy weather conditions. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/432459a
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  • 8
    Electronic Resource
    Electronic Resource
    SiC-Based Gas Sensor Development (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 338-342 (May 2000), p. 1439-1442 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/05/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.338-342.1439.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Using financial factors to investigate productivity: an empirical study in Taiwan (2001)
    Bingley : Emerald
    Industrial management & data systems 101 (2001), S. 378-384 
    Details
    ISSN: 0263-5577
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Computer Science , Economics
    Notes: Since a firm's management performance can be evaluated in terms of financial ratios, efficient management using financial factors is proposed as the key element for upgrading a firm's productivity. Investigates productivity in terms of certain financial factors of large-scale manufacturing firms in Taiwan. First determines several influential financial factors using factor analysis. Based on these factors, employs fuzzy clustering approaches to categorize the manufacturing firms into several patterns with distinct characteristics of financial factors. Using the characteristics of productivity and financial factors for each pattern, makes two kinds of analysis, and proposes some suggestions to improve the firms' productivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/EUM0000000005826
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  • 10
    Electronic Resource
    Electronic Resource
    A Low Power 8 x 8 Direct 2-D DCT Chip Design (2000)
    Springer
    The journal of VLSI signal processing systems for signal, image, and video technology 26 (2000), S. 319-332 
    Details
    ISSN: 1573-109X
    Keywords: low power ; DCT ; distributed arithmetic ; image/video coding ; VLSI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper presents the design and implementation of a low power 8 × 8 2-D DCT chip based on a computation-effective algorithm. Computational complexity can be reduced by simplifying the direct 2-D algorithm. Thus, the low power consumption is achieved due to complexity reduction. Besides, the parallel distributed-arithmetic (DA) technique is used to realize constant multiplication due to the low-power consideration. Additionally, the 2 V-power supply is practiced in circuit implementation for now and future battery operated applications. By using the TSMC 0.6 μm single-poly double-metal technology, 133 mW power consumption at 100 MHz and the 133 MHz maximum operation speed are achieved by critical path simulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026503416812
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