He finds the key in the concept of responsibility, which implies not only the freedom and flexibility of responsiveness to others but also a guiding ideal of ...

Let A be a formula without implications, and Γ consist of formulas containing disjunction and falsity only negatively and implication only positively. Orevkov and Nadathur proved that classical derivability of A from Γ implies intuitionistic derivability, by a transformation of derivations in sequent calculi. We give a new proof of this result , where the input data are natural deduction proofs in long normal form involving stability axioms for relations; the proof gives a quadratic algorithm to remove the stability axioms. (...) This can be of interest for computational uses of classical proofs. (shrink)

There are mathematical structures with elements that cannot be distinguished by the properties they have within that structure. For instance within the field of complex numbers the two square roots of −1, i and −i, have the same algebraic properties in that field. So how do we distinguish between them? Imbedding the complex numbers in a bigger structure, the quaternions, allows us to algebraically tell them apart. But a similar problem appears for this larger structure. There seems to be always (...) a background and a context that we rely upon. Thus mathematicians naturally make use of Kantian intuition and references fixed by names and denotations. I argue that such features cannot be avoided. (shrink)

The way physics and other parts of science work can be explained in the framework of radical constructivism. However, this constructivist view itself shows that a uniquily accepted epistemology, constructivism or any other, would not be an advantage for the developmentof science. Unlike physics some parts of science successfully use constructivist concepts inside their theories. Because this is the case particularly in learning theory, constructivist ideas can help to improve physics teaching.

This paper argues that a particular philosophical and historical understanding of Ancient Greek thought is used to establish a superior Western identity of universal prevalence. Starting with the terminological differences between ethnocentrism and Eurocentrism, I then reconstruct the rise of Eurocentrism by examining the changing conceptualizations of Greeks and Barbarians in Ancient texts from Homer to Aristotle. The third section explores how Western historians of philosophy and culture have used this Greek self-understanding to legitimate the view of Western cultural superiority (...) based on universalism. Finally, I discuss several possibilities to counter this form of Eurocentric Western identity-politics. (shrink)

The Financial Crisis in Europe puts pressure on welfare states and its tax systems as well as on considerations of social justice. In this paper, we would like to explore the status of the idea of progressive taxation and its justification (especially the ‘ability-to-pay’ principle) in times of a financial crisis. We will discuss it within a social justice framework following David Miller—using the principles of (i) need, (ii) merit, and (iii) equality. We will conclude that progressive taxation can be (...) justified in the light of these three principles, even more so in the situation of a financial crisis that undermines decent living conditions for millions. The principle of need has to be given priority even if this move violates the principles of equality and desert. (shrink)

Die Abhandlung gibt eine konzentrierte Rekonstruktion der weit verstreut erschienenen Überlegungen des britisch-ungarischen Chemikers und Philosophen Michael Polanyi zur Reduktionismuskritik. Schlüssel der Kritik ist der Begriff der Grenzbedingung. Grenzbedingungen weisen auf Wirklichkeiten hin, die nicht mehr von den Gesetzmäßigkeiten der Stufe, die sie begrenzen, erreicht werden. Seine Anwendung dieses Begriffs auf Maschinen und Mechanismen ermöglicht Polanyi eine überraschende Kritik am biologischen Reduktionismus. Dieser Kritikpunkt wird durch die Entdeckung der DNA noch verstärkt.

In the yeast Saccharomyces cerevisiae three positive transcriptional control elements are activated by stress conditions: heat shock elements (HSEs), stress response elements (STREs) and AP‐1 responsive elements (AREs). HSEs bind heat shock transcription factor (HSF), which is activated by stress conditions causing accumulation of abnormal proteins. STREs mediate transcriptional activation by multiple stress conditions. They are controlled by high osmolarity via the HOG signal pathway, which comprises a MAP kinase module and a two‐component system homologous to prokaryotic signal transducers. AREs (...) bind the transcription factor Yap1p. The three types of control elements seem to have overlapping, but distinct functions. Some stress proteins encoded by HSE‐regulated genes are necessary for growth of yeast under moderate stress, products of STRE‐activated genes appear to be important for survival under severe stress and ARE‐controlled genes may mainly function during oxidative stress and in the response to toxic conditions, such as caused by heavy metal ions. (shrink)