Zum 65. Geburtstag des Kolner und Brusseler Agyptologie-Professors Philippe Derchain gratulierten ihm seine Freunde Kollegen und Schuler mit 33 Beitragen aus dem Gebiet der Religions- und Geistesgeschichte des Alten Agyptens: H. Altenmuller, J. Baines, E. Blumenthal, W. Boochs, M. Broze, Fr. de Cenival, W. Decker, M. Derchain-Urtel, E. Doetsch-Amberger, E. Graefe, J.Gw. Griffiths, M. Heerma van Oss, W. Helck, M. Herb, J.M. Kruchten, D. Kurth, Fr. Labrique, A. Loprieno, M. Malaise, D. Meeks, H. De Meulenaere, J. Quaegebeur, B. (...) Radomska, U. Rossler-Kohler, H.J. Thissen, CL. Traunecker, U. Verhoeven, P. Vernus, M. Weber, W. Westendorf, W. Wettengel, E. Winter, J. Zandree (+). Ein Schriftenverzeichnis Philippe Derchains und diverse Indices beschliessen den Band. (shrink)

Technology and Ethics. A European Quest for Responsible Engineering, edited by B. Heriard Dubreuil and his team (University Lille) is in many regards an innovative publication. It is the first fully European contribution to the field of engineering ethics and the result of an intensive cooperation between ethicists and engineers from all the member countries of the European Union. The basic structure of the book is both the distinction and interaction between three levels of analysis: personal responsibility of engineers, the (...) institutional level (business organisations) and the impact of technology on society and culture. On the personal level, the book deals with problems such as the role of professional codes and the fact that engineers must cope with flexibility, shorter lines of decision and erosion of the boundaries between private and professional life. On the meso level, the book deals with different aspects of decision making in the context of business organizations, such as quality management, technology assessment procedures, business ethics committees etc... On the macro level, the authors focus on the power of technology. Together with the influences from other social, economic and political actors, the decisions of engineers change the world in a way which is of moral significance. (shrink)

A new formulation of the cusp catastrophe is used to model the fundamental biological functions of predation and reproduction. This new representation lies on the decomposition of the overall cusp potential in two component potentials individualising the conflicting pregnances. It results in a more accurate and less problematic description than the original proposition by R. Thom, mostly due to the use of parameters with strong physical and evocative power. For instance, it gives a very suggestive account for such biologically significant (...) processes as digestion and assimilation, or pregnancy and delivery. Two couples of parameters are used in the new representation of the cusp: one defines the exact shape of the conflicting attractors which symbolises genetic coding, the other controls the deformation of -and interaction between- the two attractors and represent hormonal effects. This new description strikingly echoes Heidegger's philosophical thought on ontological difference, by giving a representation of the distinct concepts of entity and Being. It thus precludes a previous criticism concerning the impossibility for catastrophic models to depict the entity level. Such a type of representation might be useful in translating syntactical-semantic models of catastrophe theory into computer language. (shrink)

In der vorliegenden Arbeit wird ein Begriffsrahmen entwickelt, in dem sich Gemeinsamkeiten und Unterschiede zwischen drei Arten von Kulturprodukten klar aufzeigen lassen: Dichtung, Mythos und Wissenschaft. Die allen drei Phänomenen gemeinsame Struktur erfassen wir in §II und §III mit dem Begriff eines Repräsentationssystems, welcher in Anlehnung an die formale Modelltheorie semiotische Vorstellungen mit einem Denken in Systemen zusammenbringt. Die relevanten Unterschiede werden durch Differenzierung (§IV) jenes Begriffs festgemacht, d.h. die drei Phänomene werden durch jeweils spezielle Arten von Repräsentationssystemen erfaßt (§V). (...) Unser spezielles Augenmerk gilt dabei dem Mythos (§I), der sich in letzter Zeit eines wachsenden Interesses -- oft außerhalb des etablierten Wissenschaftsbetriebs -- erfreut. Es zeigt sich, daß der Mythos eine Mittelstellung zwischen Dichtung und Wissenschaft einnimmt: als "Bindeglied" vermittelt er sowohl zwischen der rein begrifflichen Struktur der Phänomene "Dichtung" und "Wissenschaft" als auch zwischen deren Unterschieden in Methode und Wahrheitsanspruch (die in engem Zusammenhang mit der begrifflichen Struktur stehen). Der hier entwickelte begriffliche Rahmen soll in weiteren Untersuchungen als Grundlage zur Herausarbeitung von Unterschieden in der Methode und im Wahrheitsanspruch dienen, die sich aus unserem Ansatz in natürlicher Weise ergeben. Diese müssen jedoch aus Platzgründen einer weiteren Arbeit vorbehalten bleiben. (shrink)

Trees architectural study shows gradients in the meristematic activity. This activity is described by the number of internodes per growth unit, which is considered as the output of a dynamic random process. Several species were observed, which led us to propose and then estimate some mathematical models. Computing the functioning of a tree in a given environment therefore involves finding the probability function of the meristems and following the evolution of the parameters of this law along the botanical gradients (order, (...) trend, acrotony) within its architecture. (shrink)

Standard quantum theory is inadequate to explain the mechanisms by which potential becomes actual. It is inadequate and therefore unable to describe generation of events. Niels Bohr emphasized long ago that the classical part of the world is necessary. John Bell stressed the same point: that “measurement≓ cannot even be defined within the standard quantum theory, and he sought a solution within hidden variable theories and his concept of “beables.≓Today it is customary to try to explain emergence of the classical (...) world through a decoherence mechanism due to “environment.≓ But, we believe, as it was with the concept of measurement, “environment≓ itself cannot be defined within the standard quantum theory.We have proposed a semiphenomenological solution to this problem by introducing explicitly, from the very beginning, classical degrees of freedom, and by coupling these degrees of freedom, through a Lindblad type coupling, to the quantum world. The resulting theory, we call “event-enhanced quantum theory.≓ EEQT allows us to describe an event-generating mechanism for individual quantum systems under continuous observation. The objections of John Bell are met and precise definitions of an “experiment≓ and of a “measurement≓ have been given within EEQT. However EEQT is, essentially, a nonrelativistic theory.In the present paper we extend the ideas of L. P. Horwitz and C. Piron and we propose a relativistic version of EEQT, with an event-generating algorithm for spin one-half particle detectors. The algorithm is based on proper time formulation of the relalivistic quantum theory. Although we use indefinite metric, all the probabilities controlling the random process of the detector clicks are nonnegative. (shrink)