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  • 1
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    Innsbruck: University of Innsbruck, Department of Public Finance
    Publication Date: 2018-11-23
    Description: This paper studies an evolutionary model of network formation with endogenous decay, in which agents benefit both from direct and indirect connections. In addition to forming (costly) links, agents choose actions for a coordination game that determines the level of decay of each link. We address the issues of coordination (long-run equilibrium selection) and network formation by means of stochastic stability techniques. We find that both the link cost and the trade-off between efficiency and risk-dominance play a crucial role in the long-run behavior of the system.
    Keywords: C72 ; C73 ; D83 ; D85 ; ddc:330 ; Coordination ; Networks ; Risk dominance ; stochastic stability ; Koordination ; Soziales Netzwerk ; Stochastischer Prozess ; Nichtkooperatives Spiel ; Evolutionäre Spieltheorie ; Theorie
    Language: English
    Type: doc-type:workingPaper
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 50 (1993), S. 1565-1573 
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The thermal degradation of a poly(vinyl chloride) (PVC) resin was studied using a non-isothermal thermogravimetric technique. Kinetic parameters such as activation energies, reaction orders, and preexponential factors are calculated using integral and differential methods reported in the literature. Advantages and disadvantages of these methods are discussed in order to characterize PVC. © 1993 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Advanced Materials 5 (1993), S. 738-741 
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Advanced Materials 7 (1995), S. 130-136 
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 24 (1996), S. 223-236 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The nature of N- and S-containing groups in a set of industrial petroleum fuel cokes calcined in an inert atmosphere at different temperatures (from green coke to 2800°C) has been studied by photoelectron spectroscopy. Although both N 1s and S 2p line profiles were rather complex, several components were identified by applying peak synthesis procedures. In the N 1s spectra, the two main components can be assigned to pyrrolic and pyridinic groups; at higher temperatures, the binding energies (Eb) are shifted to higher values, and a third component is observed at very highEb. Similarly, sulphur displayed mainly a lowEb component associated to thiophenic groups, and two others placed at highEb. In both cases the contribution of these highEb components increased with increasing calcination temperature. The possible relationship between the appearance of these highEb peaks and the presence of oxidized N- and S-groups has been discarded. Then, the existence of N and S atoms replacing C atoms in graphene layers has been proposed as being responsible for such highEb peaks.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 25 (1997), S. 707-714 
    ISSN: 0142-2421
    Keywords: x-ray absorption spectroscopy ; total electron yield ; oxides ; EXAFS probing depth ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Calibration of the probing depth by x-ray absorption spectroscopy (XAS) in oxide materials is intended by measurement of the total electron yield (TEY) of electrons ejected by absorption of the radiation. Measurements have been carried out for three series of electrolytic metal oxide overlayers with different thickness. The experiments have been conducted at the Ti K, Ta LIII and Zr K edges. Analysis of the XAS spectra is carried out by factor analysis and conventional Fourier transformation and fitting analysis. The data showed that the information depth by XAS follows the order ZrO2〉TiO2〉Ta2O5 at the Ti K, Ta LIII and Zr K edges.As an alternative, the absorption spectra of the same samples were measured in the conversion electron yield (CEY) mode: i.e. by measuring the current of He+ ions produced by the ejected electrons in an atmosphere of He in contact with the sample. Here, the information depth is slightly different from that obtained by TEY. © 1997 by John Wiley & Sons, Ltd.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 26 (1998), S. 62-71 
    ISSN: 0142-2421
    Keywords: XPS ; ISS ; CoO ; Co3O4 ; interface effects ; cobalt oxide ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Both CoO and Co3O4 overlayers have been deposited on SiO2 by evaporation from metallic Co and subsequent oxidation with oxygen and a plasma of oxygen. The combined use of ion scattering spectroscopy and XPS shows that both oxides grow in the form of small particles on the surface of SiO2. Ion scattering spectroscopy also shows that the surface of cobalt oxide exposed to a plasma of oxygen is enriched in oxygen ions with respect to the surface of the cobalt oxide formed by exposure to oxygen. The Co 2p spectra corresponding to the deposits obtained by oxidation with O2 are characteristic of CoO, while those corresponding to the deposits obtained after oxidation with a plasma are typical of Co3O4. Moreover, the OCo/Co ratios determined by XPS and factor analysis indicate the formation of CoO stoichiometry in the former case and Co3O4 stoichiometry in the latter. It has also been observed that no shift in either binding energy or modified Auger parameter α′ appears as a function of coverage. This absence of shifts is interpreted as a consequence of the type of screening mechanism that dominates the relaxation of the photoholes in these oxides. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 15 (1990), S. 463-465 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: We study theoretically the distortion of marker layers embedded in homogeneous media due to energetic ion bombardment. For realistic relocation cross-sections, we have solved the balance equation, first proposed by Sigmund and co-workers, for the evolution of irradiated polyatomic targets. The collisional mixing operator accounts for recoil mixing, isotropic cascade mixing and surface barrier effects.Following the evolution with ion fluence of the marker concentration profiles, we can obtain the tracer yield, which is related directly to the as-recorded intensity in a SIMS experiment. The influence of the surface barrier on signal broadening also will be discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 20 (1993), S. 503-507 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The anodic oxidation behaviour of reactively sputtered titanium nitride thin films deposited onto silicon substrates has been investigated in order to obtain oxynitride layers at room temperature. It has been found that small differences in the stoichiometry of the titanium nitride films may give rise to large changes in the reactivity with oxygen. Thus, a strong influence of N/Ti atomic ratio value on the oxidation kinetics is observed. Analysis of the films by Rutherford backscattering and secondary ion mass spectroscopy reveals that the oxide structure is formed by an outer oxidized thin layer composed of a mixture of TiO2 + TiNx followed by a thicker layer with oxygen atoms dissolved in the previously deposited layer of titanium nitride. After prolonged oxidation, no nitrogen is detected in the surface layer, which is only composed of TiO2. Interestingly, the thickness of the outer layer is almost independent of the formation voltage and the anodization current.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 25 (1997), S. 292-294 
    ISSN: 0142-2421
    Keywords: XPS ; Auger parameter ; TiO2 ; catalyst ; chemical state plot ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The analysis by XPS of TiO2 deposited on different substrates (SiO2, MgO, Ag, SnO) shows the existence of shifts in the Ti 2p binding energy and Auger parameter values. The magnitude of these shifts is a function of the support and of the coverage. A systematic representation of these shifts is possible with a chemical state plot. The implications of the existence of such shifts for the characterization of catalysts are discussed. © 1997 by John Wiley & Sons, Ltd.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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