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Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and, conversely, innovative thought structures and attitudes have almost always forced economic institutions and modes of behaviour to adjust. We learn from the history of economic doctrines how a particular theory emerged and whether, and in which environment, it could take root. We can see how a school evolves out of a common methodological perception and similar techniques of analysis, and how it has to establish itself. The interaction between unresolved problems on the one hand, and the search for better solutions or explanations on the other, leads to a change in paradigma and to the formation of new lines of reasoning. As long as the real world is subject to progress and change scientific search for explanation must out of necessity continue.

Over the last years, and under the umbrella of the “sharing economy,” various new social practices and novel business models have been established worldwide. Such practices and models are perceived both as opportunity and challenge for existing (urban) public governance regimes. It is in this sense that the sharing economy has become a contested issue and regularly provokes bold governance responses. However, local governing authorities first need to interpret, negotiate, and establish what exactly is “at issue” in order to (re-)act adequately. While such “politics of signification” are well-studied, for instance, in social movements and public media discourse, research on the concerted framing activities of public administrations as well as on the strategic work that sets the stage for public policy-making is relatively sparse – and entirely lacking for the context of the sharing economy. In this chapter, the authors look behind the scenes of the policy-making in the City of Vienna, Austria. The empirical findings unearth six distinct mechanisms –“delimiting,” “negotiating,” “detailing,” “linking,” “justifying,” and “situating” – that are strategically applied to shape the “Viennese way” of governing the sharing economy. This research develops an in-depth understanding of what the authors conceptually dub “strategic issue work”: the manifold efforts that lead to, and underlie, in this case, the policy-making of a local government when it tries to come to terms with the governance challenges of the sharing economy.

In this paper we carry out a conditioning analysis for the steady state semiconductor device problem. We consider various quasilinearizations as well as Gummel‐type iterations and obtain stability bounds which may allow ill‐conditioning in general. These bounds are exponential in the potential variation, and are sharp e.g. for a thyristor. But for devices where each smooth subdomain has an Ohmic contact, e.g. a pn‐diode, moderate bounds guaranteeing well‐conditioning are obtained. Moreover, the analysis suggests how various row and column scalings should be applied in order for the measured condition numbers of the linearized discrete problem to correspond more realistically to the true loss of significant digits in the calculations.

The landscape of European cities is by no means homogeneous. Nonetheless, the same type of conflict has repeatedly occurred in different places in the last few years: From Seville to Vienna, from Cologne to St. Petersburg, planned high-rise buildings for inner city districts have provoked fervent arguments and debates. Whether and how European cities should integrate more high-rise buildings is a highly controversial question. This chapter focuses on strategies of vertical construction and related debates about the cityscape in both Paris and Vienna. By studying the urban constellations of Paris and Vienna, it can be shown that what may look comparable at first glance is the outcome of highly different strategies and histories.

Although both cities define themselves to a wide degree with reference to historic structures, the image of tall buildings varies drastically in these cities, which correlates with these cities’ diverse histories and hence experiences with high-rise buildings. Path dependencies and the ways individual cities receive international trends are crucial to understanding processes of urbanization. Based on in-depth interviews with various urban actors and other relevant qualitative data, this chapter aims to demonstrate that a city’s high-rise strategy cannot be attributed to any single factor; rather, it is the result of a complex interplay between various aspects and actors, which crucially includes present and past struggles over cityscapes and therefore over urban spaces.

The purpose of this paper is to develop a simple chaotic circuit. The circuit can be fabricated by less discrete electronic components, within which complex dynamical behaviors can be generated.

A second-order non-autonomous inductor-free chaotic circuit is presented, which is obtained by introducing a sinusoidal voltage stimulus into the classical Wien-bridge oscillator. The proposed circuit only has two dynamic elements, and its nonlinearity is realized by the saturation characteristic of the operational amplifier in the classical Wien-bridge oscillator. After that, its dynamical behaviors are revealed by means of bifurcation diagram, Lyapunov exponent and phase portrait and further confirmed using the 0-1 test method. Moreover, an analog circuit using less discrete electronic components is implemented, and its experimental results are measured to verify the numerical simulations.

The equilibrium point located in a line segment varies with time evolution, which leads to the occurrence of periodic, quasi-periodic and chaotic behaviors in the proposed circuit.

Unlike the previously published works, the significant values of the proposed circuit with simple topology are inductor-free realization and without extra nonlinearity, which make the circuit can be used as a paradigm for academic teaching and experimental illustraction for chaos.

Mit der Wahl des Generalthemas “Marktforschung und Werbung im Dienste des Fremdenverkehrs” für die Tagung hier in Wien — einer Stadt also, die sich geschichtlich dem Wesen der Werbung besonders verbunden fühlt — glauben wir mit Dank eine werbende Geste des Kongresses erkennen zu können, die uns aufrichtig freut.

A three‐parameter model for the electronic stopping power of boron in silicon is presented. The model parameters are determined from implantations into amor‐phous silicon and from channeling implantations into <100> and <100> silicon. Simulated boron profiles obtained with the new model, with the Lindhard model, and with the Oen‐Robinson model, respectively, are compared with experimental data on channeling and tilted implantations at 17 and 150 keV.

We discuss three models describing the carrier densities in highly doped silicon, which have been used for process and device simulation. We calculate nie for each of the models for various doping concentrations within temperature ranges interesting for the device and process simulation. We try to explain the behaviour of nie for high compensation and compare our calculated results to measured values of nie. We offer simple formulae for the calculated nie and show how far the relations between the carrier densities and the Fermi levels can be described by the simple formulae of Boltzmann statistics when we use a doping dependent effective intrinsic number.

The author critizizes the health policy in the highly developed countries which support a sector controlled by hospitals, pharmaceutics industry and health insurrance companies.

This article starts with a brief overview of the history of housing for people with intellectual disability in Austria. The system of care and Austrian disability policy are also examined, focusing on implementation of deinstitutionalisation and community living. The following analysis of services provided in the field of housing for people with intellectual disabilities shows that support is provided in undistinguished, generalised service packages based on a competency model. Academic research on community living is quite rare in Austria, and fails to take into account the subjective perspective of people with intellectual disabilities.