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  • 2005-2009  (15)
  • 1
    Electronic Resource
    Electronic Resource
    What Do Grandmothers Think about Self-esteem? American and Taiwanese Folk Theories Revisited (2005)
    Oxford, UK : Blackwell Publishing Ltd.
    Social development 14 (2005), S. 0 
    Details
    ISSN: 1467-9507
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The study investigates European American and Taiwanese grandmothers’ folk theories of childrearing and self-esteem, building on an earlier comparison of mothers from the same families. Adopting methods that privilege local meanings, we bring grandmothers’ voices into the conversation about childrearing, thereby contributing to a deeper understanding of intergenerational nuances in folk theories. In each cultural case, 16 grandmothers of 3-year-olds participated in in-depth interviews that were customized according to local communicative norms. Although self-esteem emerged as a central organizing concept in the folk theories of European American mothers, grandmothers spoke in two voices, either echoing their daughters or invoking a counter-discourse of wariness towards self-esteem. By contrast, Taiwanese mothers and grandmothers resembled one another—but differed from their American counterparts—in treating self-esteem as peripheral in childrearing. Results contribute to the growing consensus that self-esteem is a culture-specific childrearing goal and suggest that the European American tendency to valorize self-esteem varies by generation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9507.2005.00325.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A Study of the Scallop Generation Mechanism in Ultra-Precision Raster Milling (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 1262-1267 
    Details
    ISSN: 1013-9826
    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
    Notes: Ultra-precision raster milling (UPRM) can directly achieve the fabrication of threedimensionalnon-axisymmetric freeform components with nanometeric surface finish and submicrometricform accuracy. During the past few years, a lot of research on computerized numericalcontrol (CNC) machining technologies has been conducted; however, little of this research makesany contribution to UPRM. This paper studies the mechanism of scallop height generation forUPRM. Through analyzing the cutting edge locus and the scallop height generation mechanism, amodel for feed-intervals and for raster-interval scallop height generation, are presented. Parameterssuch as selection of feed direction (vertical cutting and horizontal cutting), feed rate, spindle speed,tool nose radius, swing distance, feed length and raster distance have been taken into considerationin the scallop generation models
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.1262.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Fracture Parametric Study on Bond Behaviour between FRP Laminates and High Strength Concrete with Experiments (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 913-916 
    Details
    ISSN: 1013-9826
    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
    Notes: Recently, concrete structures deteriorating for various reasons and upgrading by bondingFRP using epoxy resins has attracted significant researches. Experimental studies in literatesindicate that the anchorage between concrete and FRP laminates plays an important role in thereinforcing design. However, few and no special study has extended to high strength concrete. Thisresearch examines the bond behaviour between FRP laminates and high strength concrete. Toobtain the bond strength and regulation of debonding propagation, a simple face shear type bondtest is conducted. With the explicit material and geometric descriptions and the fairly generalboundary conditions, the interfacial fracture energy release rate, Gf of this test model which is thenused to propose the prediction of the bond strength is derived. Comparison of this energy basismodel in prediction of bond strength with the model of Chen & Teng which has a high accuracy inthis area and results from this experiment demonstrates the derived prediction model as a feasibleand effective measure in analyzing the bond behaviour between FRP and high strength concrete
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.913.pdf
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Treatments with Fracture Mechanics in Debonding of FRP-Strengthened Concrete Beams (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 324-325 (Nov. 2006), p. 185-188 
    Details
    ISSN: 1013-9826
    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
    Notes: External bonding fiber reinforced polymers (FRP) to the tension faces of reinforcedconcrete (RC) beam as an effective approach of rehabilitation and strengthening of reinforcedstructures have attracted significant interests of researchers in the past decade. Since theload-carrying capacity of RC beams strengthened with the FRP is dominated by interfacialdelaminated failure, the anchorage strength in FRP to concrete bonded joints under shear and thedebonding stress transferring behavior at the end parts of flexural concrete members bonded withFRP have been deeply studied. Recently, methods of fracture mechanics have been introduced intoanalyzing the above issues. Compared with the traditional methods, the analytical models ofexisting fracture mechanics are reviewed and analyzed. Based on them the debonding bearingcapacity of FRP-strengthened RC beams is calculated and the corresponding finite element modelsare created. These models of fracture mechanics are then evaluated with the finite element resultsand the experimental data from author’s and the literature. Some conclusions with engineeringsignificance are drawn
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.185.pdf
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Predictive Model of Surface Roughness in High-Speed End Milling Process by Factorial Design of Experiments (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 339 (May 2007), p. 189-194 
    Details
    ISSN: 1013-9826
    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
    Notes: Predictive models are presented for the surface roughness in high-speed end milling of0.45%C steel and P20 die-mould steel based on statistical test and multiple-regression analysis. Thedata for establishing model is derived from experiments conducted on a high-speed machiningcentre by factorial design of experiments. The significances of the regression equation andregression coefficients are tested in this paper. The effects of milling parameters on surfaceroughness are investigated by analyzing the experimental curves
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.339.189.pdf
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    A Study of Micro V-Groove Fabrication in Ultra-Precision Freeform Machining (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 339 (May 2007), p. 286-290 
    Details
    ISSN: 1013-9826
    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
    Notes: Optical communication is gaining popularity in telecommunications; most obviouslyevident is the increase in demand for a large variety of fiber optic components. V-groove structurequality is critical to the functionality of the fiber connector as it governs the position of the opticfibers. The main parameters, which determine the V-groove quality, include core pitch, surfaceroughness and the position of centerline. In this paper, a series of cutting conditions were applied toinvestigate the effect of different machining parameters on the V-groove quality. In the experiment,the V-groove structure is machined by a 40° single crystal diamond tool on aluminium alloy withdifferent cutting conditions. Based on the findings, the relationship between the cutting conditions onthe surface roughness was explored. The implications of these findings on the improvement of thesurface finish of V-groove profile are discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.339.286.pdf
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Levitation Capability of a Bulk YBa〈sub〉2〈/sub〉Cu〈sub〉3〈/sub〉O〈sub〉7-x〈/sub〉 with NdFeB Guideway by Two Magnetization Methods (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 546-549 (May 2007), p. 2079-2084 
    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
    Notes: On the requirement of high temperature superconducting (HTS) Maglev transportationapplication, levitation capability of bulk YBa2Cu3O7-x on the HTS Maglev test vehicle has beeninvestigated experimentally by pulsed field magnetization (PFM) and field cooling (FC). The resultshowed that YBa2Cu3O7-x sample magnetized by the pulsed magnetic field behaves like a magnet inthe other external field, and the magnetization direction of bulk determines its levitation force andlateral force mode (magnitude and direction) over NdFeB permanent magnetic guideway (PMG). Onthe other hand, static field cooling condition is with an electromagnetic field realized by Field ControlElectromagnets Workbench. Two important forces of the same bulk were measured and comparedwith the PMG when the bulk had the same max trapped field by FC and PFM methods, and the resultsshow the difference effects by these two magnetization methods
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.2079.pdf
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    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Study on the Tool Path Generation of an Automotive Headlamp Reflector in Ultra-Precision Raster Milling (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 673-676 
    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
    Notes: Nowadays faceted reflector design has become popular in automotive illuminationsystems. The advantage of a compound surface enables it to achieve the required hot spot intensity bydirecting more than 60% of the generated light towards the road, thereby largely illuminate the areathrough the aperture. The research is oriented to fabricating the mold insert on ultra-precision rastermilling (Freeform 705G). In this paper, the tool path generation method for automotive headlampreflectors is studied, and a practical gouging detection and avoidance algorithm is proposed. Thesurface roughness and form accuracy (peak-to-valley height) are then calculated theoretically usingmathematical formulae. Through the tool path generation of a small but representative surface patchwith a gap, a possible way is finally found to generate the tool path for such a class of freeform surfacewith special equipment
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.673.pdf
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    An Investigation of Form Compensation in Fabricating Microlens Arrays by Ultra-Precision Fast-Tool-Servo Technology (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 689-692 
    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
    Notes: Microlens arrays are widely used as critical components in a large number of photonicsand telecommunication products. The increasing demand for high-tech products provides anexpanding room for the development of the micro-fabrication technology. This study presents a toolcompensation for correcting the form error of fabricated microlenses in ultra-precision machiningwith fast-tool-servo (FTS) system. After presentation of optimal cutting conditions deduced on thebasis of cutting experiments of microlens arrays, a tool radius compensation method will be proposedand evaluated in this paper. This methodology makes use of form measurement data from a FormTalysurf system to modify the C program employed in the software of ultra-precision machining FTSsystem – SOP. The form error was successfully reduced after implementation of tool compensation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.689.pdf
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    A New HTS/PMG Maglev Design Using Halbach Array (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 546-549 (May 2007), p. 1941-1944 
    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
    Notes: For the high temperature superconducting (HTS) magnetic levitation (Maglev) test vehiclein china, the present NdFeB PMG has the symmetrical magnetic field distribution on the upper andlower surface. However, the vehicle only utilizes its upper magnetic field. 50% PMG magnetic fieldenergy goes to waste, so the onboard HTSC arrays haven’t reached the best levitation performance. Inorder to make the HTS/PMG maglev system more efficient and reasonable, a new HTS/PMG Maglevdesign has been proposed based on the present PMG and the Halbach array PMG, whose PMG iscalled as hybrid PMG. Firstly, three magnetic field distributions of three kinds of PMG are comparedusing FEM. It is found that the magnetic field distribution of the hybrid PMG is more efficient for theHTSC’s maglev. The concentrating upper surface magnetic field is stronger to improve the loadcapability of the system. Numerical analysis and experiment are close for the present HTS/PMGsystem. More calculation shows that the bulk YBaCuO HTSC with the hybrid PMG has significantlybetter levitation performance than that with the other two PMGs. The usage of the onboard HTSCarrays is improved much and the load capability of the HTS/PMG Maglev vehicle is upgraded withthe hybrid PMG
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1941.pdf
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