Estimating the privacy of quantum-random numbers

We analyze the information an attacker can obtain on the numbers generated by a user by measurements on a subsystem of a system consisting of two entangled two-level systems. The attacker and the user make measurements on their respective subsystems, only. Already the knowledge of the density matrix of the subsystem of the user completely determines the upper bound on the information accessible to the attacker. We compare and contrast this information to the appropriate bounds provided by quantum state discrimination.Comment: 26 pages, 4 figure

H.C. Andersens Iisjomfruen und die Unterhaltungsliteratur des 19. Jahrhunderts

H.C. Andersen’s fairy tale The Ice Maiden is in many ways very modern, especially when we take into account its formal and rhetorical devices. The narrative is not invented by the author as the story is compound of travel journeys, popular readings of the time and so on. Andersen himself indicated some of his sources. In the following paper I would like to discuss the relationship between the fairy tale and the so called „Gebirgserzählung“ from the 18th and 19th century, which was extremely popular at the time. While the core of a “Gebirgserzählung” often consists in a young couple, that after many troubles in the end comes happily together, this is not the case in The Ice Maiden, as Andersen let the protagonist die. It looks as if Andersen would argue in favour of predetermination, based on Christian belief. However, this conclusion is not convincing because it fails to explain the obvious injustice of Rudy’s fate. In what follows I suggest a rhetorical explanation of the protagonist’s death. In such a view Rudy’s death is not to be understood as predetermined, but as a result of Andersen’s fear of his own modernity. What he demonstrates is how an entire story can be the result of other stories, how literature is based on literature. But the author himself seems not to be mature for this insight and that’s the reason why he let the protagonist die

Assessment of Real Estate Brokerage Service Quality with a Practicing Professional's Instrument

This study explores factors that affect service quality for a large residential real estate brokerage in a diverse midwestern city. It examines the extent to which overall service quality influences homebuyers to recommend the brokerage firm and to use the firm for future transactions. A Linear Structural Relations model is fit to data using the firm's service quality instrument. Results indicate statistically significant relationships between both agent characteristics and the tangible aspects of the firm, and three measures of overall service quality. Implications for the real estate industry are discussed and suggestions for improvement and future research are provided.

Proposal of a methodology for the sustainability assessment of cryptocurrencies

As cryptocurrencies are becoming more and more widespread and their power consumption has caught the attention of the public, it seems worthwhile to investigate their effects on the environment, economy and society. In the scientific literature, a clear focus on the high power consumption of the market-dominating Bitcoin can be seen in the sustainability assessment of cryptocurrencies. In order to build a comprehensive understanding of cryptocurrencies’ sustainability other aspects should be considered as well instead of narrowing down the scope of analysis to power consumption. Therefore, a holistic definition of sustainability in the context of cryptocurrencies is proposed. Building upon this definition a methodology for assessing a cryptocurrencies’ sustainability is derived in this paper and subsequently applied to ten cryptocurrencies

Neue Möglichkeiten durch die Namensaktie

Durch das Interesse deutscher Unternehmen an einer weltweit einheitlichen Aktie hat sich in letzter Zeit eine Umstellung auf die Namensaktie durchgesetzt. Diese Entwicklung beruht einerseits auf der Verbesserung des Abwicklungssystems CASCADE RS der Clearstream Banking AG, Frankfurt am Main (CBF), andererseits auf den verbesserten Zugangsmöglichkeiten zu den globalen Kapitalmärkten. Hinzu kommen die Möglichkeiten zu verbesserten Investor-Relations-Maßnahmen, einer Auflegung von Belegschaftsaktien-Programmen sowie Aktienoptions-Programmen für die Mitarbeiter. --Namensaktie,one global share

Figuren des Fremden in der skandinavischen Gegenwartsprosa: Herbjømsrud, Hermanson, Rynell

The following paper is concerned with the figure of the stranger in texts of three contemporary Scandinavian authors (Hans Herbjomswd, Marie Hermanson, Elisabeth Rynell). Georg Simmel’s well-known formula defines the stranger as the person who comes today and stays tomorrow. This analysis focuses on the stranger as defined by Simmel, examining his narrative as well as his function in terms of content

Life spring thesis

Life spring thesi