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  • 1
    Publication Date: 2019-01-15
    Description: The ongoing globalisation process has not put an end to international financial crises. On the contrary, it seems to have contributed to their appearance and to accentuating their degrees of unpredictability. In this context, the main objective of the present study is to establish whether the values of the best-known and most widely used country risk indexes, namely, the Euromoney index and the International Country Risk Group (ICRG), and the values of their representative variables could have forecasted well in advance the crises that took place between 1994 and 2002, a period which is herein termed the "globalisation era". The results show that, although the selected indexes and their representative variables were able to identify certain vulnerabilities, they could not accurately identify the political, economic, and/or financial factors that developed prior to these crisis episodes.
    Keywords: G01 ; F36 ; ddc:650 ; globalisation and uncertainty ; financial crises forecast ; country risk indexes ; representative variables
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:article
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  • 2
    Publication Date: 2019-01-15
    Description: What factors influence consumers to choose a bank with which to contract a service in a situation of information asymmetry? In this situation the firm has more information than consumers, and this fact generates consumer uncertainty due to a possible firm opportunistic behaviour. To reduce it, consumers can use, on one hand, signals that the bank sends to the market, such as reputation, and on the other hand, they can seek for more informal information, such as positive word-of-mouth communication from relatives and friends, to generate or increase trust, and through this variable, to develop an intention o contract with a specific bank and not others. Relations among those variables were tested with a sample of 155 bank users when they have not still worked with a specific bank. Results indicate the importance both of the reputation signal and of the positive information received of acquaintances and relatives to trust, but with differences according to the level of perceived ex ante uncertainty moderate those relations.
    Keywords: M31 ; ddc:650 ; bank ; trust ; reputation ; uncertainty ; word-of-mouth
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: Spanish
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  • 3
    Publication Date: 2019-11-02
    Description: One of the business models that attracts scholars and professionals’ interest is mobile commerce. This paper applies the theory of shopping preference to this field. It analyzes the role of personal factors (perceived control and propensity to use technology), social factors (influence of a social group), and epistemic factors (compatibility) to determine consumers’ attitude toward mobile advertising (madvertising) and mobile repurchase (m-repurchase). The information of 973 mobile shoppers is analyzed in two contexts (Spain as a developed country and Mexico as a developing country). A positive attitude toward m-advertising is confirmed to increase m-repurchase through the mobile phone and the indirect influence of personal, social, and epistemic factors on shoppers m-repurchase (through the attitude toward m-advertising) varies depending on the analyzed market.
    Keywords: M3 ; ddc:650 ; Attitude ; Mobile ; M-repurchase
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 4
    Publication Date: 2013-11-14
    Description: We present a new approach in astrodynamics and celestial mechanics fields, called hybrid perturbation theory. A hybrid perturbation theory combines an integrating technique, general perturbation theory or special perturbation theory or semianalytical method, with a forecasting technique, statistical time series model or computational intelligence method. This combination permits an increase in the accuracy of the integrating technique, through the modeling of higher-order terms and other external forces not considered in the integrating technique. In this paper, neural networks have been used as time series forecasters in order to help two economic general perturbation theories describe the motion of an orbiter only perturbed by the Earth’s oblateness.
    Print ISSN: 1024-123X
    Electronic ISSN: 1563-5147
    Topics: Mathematics , Technology
    Published by Hindawi
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  • 5
    Publication Date: 2014-07-07
    Description: A scalable second-order analytical orbit propagator programme based on modern and classical perturbation methods is being developed. As a first step in the validation and verification of part of our orbit propagator programme, we only consider the perturbation produced by zonal harmonic coefficients in the Earth’s gravity potential, so that it is possible to analyze the behaviour of the mathematical expressions involved in Delaunay normalization and the Krylov-Bogoliubov-Mitropolsky method in depth and determine their limits.
    Print ISSN: 1024-123X
    Electronic ISSN: 1563-5147
    Topics: Mathematics , Technology
    Published by Hindawi
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  • 6
    Publication Date: 2015-03-03
    Description: Deprit’s method has been revisited in order to take advantage of certain arbitrariness arising when the inverse of the Lie operator is applied to obtain the generating function of the Lie transform. This arbitrariness is intrinsic to all perturbation techniques and can be used to demonstrate the equivalence among different perturbation methods, to remove terms from the generating function of the Lie transform, or to eliminate several angles simultaneously in the case of having a degenerate Hamiltonian.
    Print ISSN: 1024-123X
    Electronic ISSN: 1563-5147
    Topics: Mathematics , Technology
    Published by Hindawi
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