Stefan W. Schmitz

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The paper questions the notion that the diffusion of electronic commerce will lead to disintermediation. Rather than interpreting intermediation as a single service it is pointed out that intermediaries can provide a number of services. The analysis based on the New Institutional Economics, Market Microstructure Theory, and Information Economics shows that(More)
This Working Paper should not be reported as representing the views of the IMF. The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF/OeNB or IMF/OeNB policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate. A framework(More)
This paper questions the widely held view that B2C eCommerce markets are characterised by a high intensity of competition, using a mixture of theoretical arguments and empirical evidence. We discuss two hypothesis and survey empirical studies which test them. We argue that the goods sold in B2C eCommerce have to be interpreted as heterogeneous “composite(More)
A number of commentators have argued that technological innovation is about to change the institutional structure of the retail payments system. Through the potential private issue of currency via new electronic payments systems – electronic money – individuals will create currencies based on units of account different from the dominant unit of account in(More)
2 This paper follows two objectives: (i) It demonstrates the merits of the survey based approach to B2C eCommerce characteristics and company strategy, and (ii) it presents empirical evidence of the crucial importance of size and marketing investment in B2C eCommerce markets. It presents econometric estimates of the effects of company characteristics and(More)
Taking into account typical power and temperature requirements of electric vehicle applications, silicon carbide based semiconductor devices seem to be the most promising candidates for future high power density traction inverter applications. Therefore, the design of a three-phase DC-AC inverter based on SiC MOSFETs under automotive constraints is(More)
Introduction Three dimensional Contrast-enhanced MR Angiography (3D CE-MRA) has become an accepted technique for vascular imaging particularly in the abdomen, thorax and extremities. This technique can provide 3D angiograms of excellent contrast and minimize flow-related artifacts. However, quantitative 3D morphological information on vessels cannot be(More)
In this paper an improved method for designing electric propulsion systems consisting of e-machine and inverter, based on a co-simulation, is presented. As the mandated emission limits of vehicles are expected to become stricter, advanced design methods are necessary to calculate accurate losses of machine and inverter. The approach contains the influence(More)
Erase-It Background Eliminator is a solution used directly on processed film to remove background or improve data resolution. Traditional methods, such as optimization of the scientific protocol or better estimation of exposure time, are tedious and uncertain. Nevertheless, autoradiography continues to be a simple, effective method to visualize data.(More)