The bi-polar confrontation between the Soviet Union and the USA involved many leading game theorists from both sides of the Iron Curtain: Oskar Morgenstern, John von Neumann, Michael Intriligator, John Nash, Thomas Schelling and Steven Brams from the United States and Nikolay Vorob’ev, Leon A. Petrosyan, Elena B. Yanovskaya and Olga N. Bondareva from the Soviet Union. The formalization of game theory (GT) took place prior to the Cold War but the geopolitical confrontation hastened and shaped its evolution. In our (...) article we outline four similarities and differences between Western GT and Soviet GT: 1) the Iron Curtain resulted in a lagged evolution of GT in the Soviet Union; 2) Soviet GT focused more on operations research and issues of centralized planning; 3) the contemporary Western view on Soviet GT was biased and Soviet contributions, including works on dynamic stability, non-emptiness of the core and many refinements, suggest that Soviet GT was able to catch up to the Western level relatively fast; 4) international conferences, including Vilnius, 1971, fostered interaction between Soviet game theorists and their Western colleagues. In general, we consider the Cold War to be a positive environment for GT in the West and in the Soviet Union. (shrink)

A concept for a primitive angiospermous branch system is given in order to have a starting point for the derivation of the diverse and highly differentiated branch systems observed in contemporary angiosperms. Hitherto Troll's (1964, 1969) comparative study of the synflorescences in this plant group — developed out predominantly on herbaceous plants — was the most comprehensive and sophisticated treatment dealing with branch systems. Unfortunately, the work on tropical tree architecture by Hallé et al. (1978) has no reference to the (...) classical studies of Troll and his pupils. Thus Müller-Doblies and Weberling (1984) emphasized the high degree of terminological incompatibility between the two works. Angiosperms are seen as a monophyletic plant division. Consequently, the branch system of the first primitive angiosperms must be the starting point in the evolution of the abundant diversity of branch systems and growth forms of modern angiosperms. If it is accepted that primitive angiospermous shoots were terminated by a large flower, one may assume, that the reproductive end of the shoot was enriched by paracladia early in evolution, thereby developing a terminal inflorescence instead of a single flower. Thus the primitive shoot unit was divided into a basal vegetative region — the trophotagma, branching retardively — and the reproductive terminal region, the anthotagma, branching simultaneously. It is demonstrated through a selection of different examples, that the construction of such a system possesses the options for several modifications, enabling the evolution of the abundant diversity of branch systems which characterizes contemporary angiosperms. (shrink)

In the words of Robert M. Solow traverse analysis "is the easiest part of skiing, but the hardest part of economics". The aim of this volume is to assess the state and scope of modern traverse analysis as it had been initiated by John Hicks in his pioneering contribution Capital and Time. The analysis of an economy which originally had been in a growth equilibrium which was disturbed by technical progress is one of the most challenging problems in economics. This (...) book takes Hicks’ work as the point of departure for theoretical work on the macroeconomic theory of capital dynamics along transition non-steady state paths The original contributions in this volume explore the manifold theoretical roots of traverse analysis in classical and post-classical literature, its features as a specific method of economic dynamics, and its applications in a variety of fields from monetary economics to development and international economics. The essays thereby focus on the ways ahead from Capital and Time that have been suggested and actively pursued by a number of scholars in recent years. Its central theme is the role of capital structures as critical factors in determining the actual dynamics of any given economic system. This volume is inspired by the belief that this state of affairs is not a satisfactory one, and outlines a new agenda for capital theory. Contributors include Edwin Burmeister, Jean-Luc Gaffard and Heinz Kurz. (shrink)

This article discusses the emergence of Diyār Bakr as the northern subdivision of the Jazīra in the early Islamic period. It shows that this sub-province is a product of the 10th century CE and not, as has hitherto been assumed, of the conquest or Umayyad period. As a first step, the paper traces the appearance of the name Diyār Bakr in the Arabic sources to the mid-10th century. It then turns to the ʿAbbāsid geographical tradition and gives an overview of (...) the various portrayals of the region of the Jazīran north up to al-Muqaddasī (d. after 990), who is the first to provide a rudimentary depiction of the Jazīran north as ‘Diyār Bakr’. The article then turns to the history of the Banū Shaybān of Bakr/rabīʿa in the Jazīran north to offer a tentative explanation for the origin of the term and administrative district of Diyār Bakr. It concludes with a brief discussion of the need to re-evaluate the political and administrative history of the Jazīra before the 10th century. (shrink)

Today’s food production and consumption go hand in hand with immense damages to humans and nature. Change is needed, but where to start and which direction to go? This article tries to give an interdisciplinary answer by taking recourse to a vision, that is, an ideal image of the future which is drawn upon ethical reflection and beyond the limits of actual political and economic constraints. The main purpose of this paper is to show that generating and discussing visions can (...) be a powerful process in order to regain ability to act in the face of the complex challenges of our time and that Education for Sustainable Development plays an important role to enable current and future generations to become actors of change. First, a students vision on agriculture and society in 2050 is presented, followed by a theoretical examination of visions, their potentials, limits and practical implications. Subsequently, the results of a field analysis of current innovative solutions to local agriculture are given. These include intercultural gardens and community supported agriculture. Claiming that a sustainable development can only be reached if people are not only able to envision a desirable future, but to develop small scale, locally adapted solutions as answers to challenges such as climate change, this paper then focuses on the competence oriented educational concept of ESD. Here, an approach of integrating ethics in the course of studies of agricultural sciences implemented by a student’s initiative serves as practice example. (shrink)