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  • Articles: DFG German National Licenses  (113)
  • 2000-2004  (109)
  • 1905-1909  (4)
  • 1
    Electronic Resource
    Electronic Resource
    The Role of Caring in the Teacher-Student Relationship for At-Risk Students (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Sociological inquiry 71 (2001), S. 0 
    Details
    ISSN: 1475-682X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Sociology
    Notes: This study uses information from both teachers and students to explore how the perceptions of each other's investment in the relationship affects the productivity of the relationship. Using the National Longitudinal Study of 1988 (NELS), I analyze the conditions and academic consequences of students’investment in the relationship with teachers and school. I find that teachers’perceptions that the student puts forth academic effort and students’perceptions that teachers are caring are each weakly associated with mathematics achievement for most students. For students who are judged by their teachers as at risk of dropping out of high school, however, the value for math achievement of having teachers who care is substantial and mitigates against the negative effect of having been judged as at risk. The results suggest that social capital, as defined by a relationship that facilitates action, is especially high for at-risk students who feel their teachers are interested, expect them to succeed, listen to them, praise their effort, and care.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-682X.2001.tb01110.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Detection of High-Risk Atherosclerotic Coronary Plaques by Intravascular Spectroscopy (2003)
    350 Main Street , Malden , MA 02148 , USA . : Blackwell Science Inc
    Journal of interventional cardiology 16 (2003), S. 0 
    Details
    ISSN: 1540-8183
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Multiple technologies are under development to identify plaque composition and vulnerability. This review article is intended to provide basic knowledge to the interventional cardiologist and the clinician about spectroscopy. The concept of light, the wavelength unit and the electromagnetic spectrum are discussed. Different types of spectra analysis including nuclear magnetic resonance, Raman, fluorescence and diffuse reflectance near-infrared spectroscopy are then carefully reviewed. Experimental data to identify atherosclerotic plaque composition for each of these techniques is provided. Potential benefits and challenges are addressed. Finally, diffuse reflectance near-infrared spectroscopy is discussed in more detail as a promising technique to characterize plaque vulnerability in humans. (J Interven Cardiol 2003;16:243–252)
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0854.2003.8040.x
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  • 3
    Electronic Resource
    Electronic Resource
    Decreased Protein Phosphatase 2A Activity in Hippocampal Long-Term Potentiation (2000)
    Oxford UK : Blackwell Science Ltd
    Journal of neurochemistry 74 (2000), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Using autophosphorylated Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) as substrate, we now find that long-term potentian (LTP) induction and maintenance are also associated with a significant decrease in calyculin A-sensitive protein phosphatase (protein phosphatase 2A) activity, without changes in Mg2+-dependent protein phosphatase (protein phosphatase 2C) activity. This decrease in protein phosphatase 2A activity was prevented when LTP induction was inhibited by treatment with calmidazolium or D-2-amino-5-phosphonopentanoic acid. In addition, the application of high-frequency stimulation to 32P-labeled hippocampal slices resulted in increases in the phosphorylation of a 55-kDa protein immunoprecipitated with anti-phosphatase 2A antibodies. Use of a specific antibody revealed that the 55-kDa protein is the B′α subunit of protein phosphatase 2A. Following purification of brain protein phosphatase 2A, the B′α subunit was phosphorylated by CaM kinase II, an event that led to the reduction of protein phosphatase 2A activity. These results suggest that the decreased activity in protein phosphatase 2A following LTP induction contributes to the maintenance of constitutively active CaM kinase II and to the long-lasting increase in phosphorylation of synaptic components implicated in LTP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.2000.740807.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Properties of high κ gate dielectrics Gd2O3 and Y2O3 for Si (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 3920-3927 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present the materials growth and properties of both epitaxial and amorphous films of Gd2O3 (κ=14) and Y2O3 (κ=18) as the alternative gate dielectrics for Si. The rare earth oxide films were prepared by ultrahigh vacuum vapor deposition from an oxide source. The use of vicinal Si (100) substrates is key to the growth of (110) oriented, single domain films in the Mn2O3 structure. Compared to SiO2 gate oxide, the crystalline Gd2O3 and Y2O3 oxide films show a reduction of electrical leakage at 1 V by four orders of magnitude over an equivalent oxide thickness range of 10–20 Å. The leakage of amorphous Y2O3 films is about six orders of magnitude better than SiO2 due to a smooth morphology and abrupt interface with Si. The absence of SiO2 segregation at the dielectric/Si interface is established from infrared absorption spectroscopy and scanning transmission electron microscopy. The amorphous Gd2O3 and Y2O3 films withstand the high temperature anneals to 850 °C and remain electrically and chemically intact. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1352688
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Diagnosing a school board's interactional trouble: theorizing problem formulating (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Communication theory 11 (2001), S. 0 
    Details
    ISSN: 1468-2885
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Media Resources and Communication Sciences, Journalism , Psychology
    Notes: Communication, Craig (1989, 1995a, 1995b; Craig & Tracy, 1995) argues, is and should be a practical discipline: a field whose scholarly work would be helpful in improving the communicative practices it studies. Following explication of Craig's notions of practical theory and communication as a practical discipline, this paper analyzes the interactional trouble in one community's school board meetings. Drawing upon 3 theories relevant to this school board site - proposals about argumentative processes, rhetorical action, and moral conflict - we show how each theoretical lens leads to a different diagnosis of the community's ‘school board problem’. The second part of the paper inverts the analytic focus. Based on study of this school board's troubles, we critique the usefulness of the 3 theories. In the conclusion, we reflect about the often-invisible task of labeling the problem that a group is facing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-2885.2001.tb00234.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Between Home and Host Country: Multinationals and Employment Relations in Europe (2001)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    Industrial relations journal 32 (2001), S. 0 
    Details
    ISSN: 1468-2338
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1468-2338.00210
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Computerized electronic temperature control system for thermal efficiency during baking in food research (2001)
    Oxford, UK : Blackwell Science Ltd
    International journal of consumer studies 25 (2001), S. 0 
    Details
    ISSN: 1470-6431
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: A more sophisticated temperature control system than the capillary thermostat in conventional electric ovens is necessary for laboratory research on foods. The aim of the study was to develop a computerized temperature control system (CTCS) for conventional electric ovens and to determine whether the CTCS could effect comparable and consistent results in two ovens with regard to oven and product characteristics of baked products. No significant differences were found between the two ovens with regard to average oven temperature, texture and height of products. In most instances there were also no significant differences between the ovens with regard to instrumental colour measurement and moisture loss. The regression results also illustrated the effectiveness of the CTCS, i.e. that an increase in set oven temperature of 1°C has a significant effect on specific oven and product characteristics. The CTCS therefore significantly improved the reproducibility of quality characteristics of baked products. Thus, more consistent and repeatable results can be obtained to improve the reliability of consumer-driven food research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1470-6431.2001.00145.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Combining Rational Choice and Evolutionary Dynamics: The Indirect Evolutionary Approach (2000)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    Metroeconomica 51 (2000), S. 0 
    Details
    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: In this study we propose a formal framework for the indirect evolutionary approach initiated by Guth and Yaari. It allows us to endogenize preferences and to study their evolution. We define two-player indirect evolutionary games with observable types and show how to incorporate symmetric as well as asymmetric situations. We show how to apply solution concepts that are well known from game theory and evolutionary game theory to solve these games. For illustration we include two examples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1467-999X.00090
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  • 9
    Electronic Resource
    Electronic Resource
    Detection of luminescent single ultrasmall silicon nanoparticles using fluctuation correlation spectroscopy (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 1857-1859 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We dispersed electrochemical etched Si into a colloid of ultrasmall blue luminescent nanoparticles, observable with the naked eye, in room light. We use two-photon near-infrared femtosecond excitation at 780 nm to record the fluctuating time series of the luminescence, and determine the number density, brightness, and size of diffusing fluorescent particles. The luminescence efficiency of particles is high enough such that we are able to detect a single particle, in a focal volume, of 1 pcm3. The measurements yield a particle size of 1 nm, consistent with direct imaging by transmission electron microscopy. They also yield an excitation efficiency under two-photon excitation two to threefold larger than that of fluorescein. Detection of single particles paves the way for their use as labels in biosensing applications. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.126191
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  • 10
    Electronic Resource
    Electronic Resource
    Atomic scale measurements of the interfacial electronic structure and chemistry of zirconium silicate gate dielectrics (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 4195-4197 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have examined the interfaces in Zr-silicate gate dielectrics grown on Si substrates using electron energy loss spectroscopy. The Zr-silicate interface is found to be stable with the Si substrate and the polycrystalline silicon (poly-Si) electrode under annealing to 1050 °C. At this interface, a 0.35 nm wide Zr-free interface region is observed in the as-deposited film, and does not change on annealing. The Zr-free region is too thin to take on the bulk SiO2 electronic structure, and thus is unlikely to compromise the dielectric properties of the device. For films with an Al electrode, a 2 nm reaction layer forms at the Zr-silicate interface. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1426268
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