Social security systems differ not only in size, hut also in form. These forms have often been more controversial than the size of social expenditure. Different social forces have different conceptions of social security.Here is looked into the post-World War II settlements with regard to social security in Austria, Belgium, Britain, France, Germany, and the Netherlands, with a further glance at Denmark, Italy, Norway and Sweden. It is argued, that the labour movement had a particular vision of social security, which (...) was carried through where the labour had the political majority and was defeated where it was a minority. Postwar developments derive form this settlement, which is more visible in the current crisis than in the 1960s - early 1970s period of expansion. (shrink)

Begriffsanalyse und empirische Forschung auf dem Gebiet der künstlichen Intelligenz zeigen, daß momentan derart kontroverse Ansätze entwickelt werden, daß gemeinschaftliche Momente in Perspektiven und angewandten Methodologien nur schwer auszumachen sind.

Brouwer's papers after 1945 are characterized by a technique known as the method of the creating subject. It has been supposed that the method was radically new in his work, since Brouwer seems to introduce an idealized mathematician into his mathematical practice. A newly opened source, the unpublished text of a lecture of Brouwer from 1934, fully supports the conclusions of our analysis that: - There is no idealized mathematician involved in the method;- The method was not new at all;- (...) Brouwer uses an incomplete sequence, also known as choice sequence, in this method, which is special. The method does not take its place in the standard works on choice sequences. (shrink)

Argument-places play an important role in our dealing with relations. However, that does not mean that argument-places should be taken as primitive entities. It is possible to give an account of ‘real’ relations in which argument-places play no role. But if argument-places are not basic, then what can we say about their identity? Can they, for example, be reconstructed in set theory with appropriate urelements? In this article, we show that for some relations, argument-places cannot be modeled in aneutralway in (...) V[A], the cumulative hierarchy with basic ingredients of the relation as urelements. We argue that a natural way to conceive of argument-places is to identify them with abstract, structureless points of a derivative structure exemplified by positional frames. In case the relation has symmetry, these points may be indiscernible. (shrink)

In this paper we study the termination behavior of Russell’s description elimination rewrite system. We discuss certain claims made by Kripke (2005) in his paper concerning the possible nontermination of elimination of descriptions.

De Nederlandse filosoof Cornelis Verhoeven hield zich intensief bezig met de klassieke filosofie. Hij was ook jarenlang leraar op een school voor voortgezet onderwijs en hoogleraar aan de Universiteit van Amsterdam. Bovendien was hij een begenadigd schrijver van prikkelende essays. Daaronder zijn er vele die gaan over het onderwijs. De waardigheid van het vak van leraar ging hem zeer ter harte. De centrale thema’s in zijn werk zijn verwondering en dankbaarheid, ontvankelijkheid en geduld, rust en stilte. Deze bieden een tegenwicht (...) tegen oprukkende verschijnselen als het activisme, de rusteloosheid en de nadruk op snelle resultaten in het onderwijs. Cornelis Verhoeven neemt afstand van de maakbaarheidsideologie en pleit voor het niet-planbare en niet-berekenbare dat de kern van onderwijs uitmaakt: een leraar en leerlingen die zich samen buigen over de zaken uit de wereld. Joop Berding presenteert in dit boek de onderwijsfilosofie van Cornelis Verhoeven. Bovendien gaat hij in gesprekken met onderwijsmensen na wat deze visie voor het onderwijs en de leraren van vandaag te betekenen heeft. Een verrassend actuele en stimulerende bijdrage aan het doorgaande gesprek over wat onderwijs is en kan zijn. (shrink)

Amsterdam University Press is a leading publisher of academic books, journals and textbooks in the Humanities and Social Sciences. Our aim is to make current research available to scholars, students, innovators, and the general public. AUP stands for scholarly excellence, global presence, and engagement with the international academic community.

Negative gegenseitige Befruchtung mag als seltsamer Titel erscheinen. Gegenseitige Befruchtung scheint per definitionem etwas Positives zu sein. Aber diese Untersuchung will die Aufmerksamkeit auf die Tatsache richten, daß in einer großen Anzahl von Fällen die gegenseitige Befruchtung einige negative Effekte auslöst; einige von ihnen mögen sogar katastrophal sein. Dieser Artikel kann die Aufmerksamkeit nur auf die negativen Auswirkungen und die Notwendigkeit lenken, die Bedingungen, welche den positiven oder negativen Ausgang oder die Unwirksamkeit einer bestimmten gegenseitigen Befruchtung determinieren, ausführlicher zu untersuchen; (...) um die Randbedingungen auf beiden Seiten zu formulieren: Das Befruchtende und das Befruchtete. (shrink)

In the ordinary way of representing relations, the order of the relata plays a structural role, but in the states themselves such an order often does not seem to be intrinsically present. An alternative way to represent relations makes use of positions for the arguments. This is no problem for the love relation, but for relations like the adjacency relation and cyclic relations, different assignments of objects to the positions can give exactly the same states. This is a puzzling situation. (...) The question is what is the internal structure of relations? Is the use of positions still justified, and if so, what is their ontological status? In this paper mathematical models for relations are developed that provide more insight into the structure of relations “out there” in the real world. (shrink)

Par des suites de choix, nous comprenons des suites qui ne sont pas déterminées complètement par une loi arithmétique. Elles sont des objets caractéristiques de l’intuitionnisme de Brouwer. Nous prétendons qu’à partir de 1927, l’utilisation par Brouwer de suites de choix particulières n’est pas reconnu comme tel. Nous prétendons que l’utilisation de ces suites dans la méthode du sujet créatif, après la seconde guerre mondiale, n’a pas à être mis en relation avec l’utilisation de celles-ci dans les années vingt et (...) qu’elles sont mal interprétées. Nous montrons où se trouvent ces suites de choix dans l’œuvre de Brouwer et comment elles doivent être traitées. (shrink)

Par des suites de choix, nous comprenons des suites qui ne sont pas déterminées complètement par une loi arithmétique. Elles sont des objets caractéristiques de l’intuitionnisme de Brouwer. Nous prétendons qu’à partir de 1927, l’utilisation par Brouwer de suites de choix particulières n’est pas reconnu comme tel. Nous prétendons que l’utilisation de ces suites dans la méthode du sujet créatif, après la seconde guerre mondiale, n’a pas à être mis en relation avec l’utilisation de celles-ci dans les années vingt et (...) qu’elles sont mal interprétées. Nous montrons où se trouvent ces suites de choix dans l’œuvre de Brouwer et comment elles doivent être traitées. (shrink)

We study the logical structure of relations, and in particular the notion of occurrences of objects in a state. We start with formulating a number of principles for occurrences and defining corresponding mathematical models. These models are analyzed to get more insight in the formal properties of occurrences. In particular, we prove uniqueness results that tell us more about the possible logical structures relations might have.

Argument-places play an important role in our dealing with relations. However, that does not mean that argument-places should be taken as primitive entities. It is possible to give an account of relations in which argument-places play no role. But if argument-places are not basic, then what can we say about their identity? Can they, for example, be reconstructed in set theory with appropriate urelements? In this article, we show that for some relations, argument-places cannot be modeled in a neutral way (...) in V[A], the cumulative hierarchy with basic ingredients of the relation as urelements. We argue that a natural way to conceive of argument-places is to identify them with abstract, structureless points of a derivative structure exemplified by positional frames. In case the relation has symmetry, these points may be indiscernible. (shrink)

How we talk about relations has a great influence on how we think about relations. By saying that Spain defeated the Netherlands we obviously say something entirely different from saying that the Netherlands defeated Spain. This makes many of us think that in the underlying relation itself one of the relata comes first and the other comes second. However, there are good reasons to view the order as a representational artifact. In this paper I present a new logic that allows (...) us to think and talk about relations in a coordinate-free manner. The logic is minimalistic in the sense that it has no predicates except equality, but its expressive power is the same as that of first-order predicate logic. (shrink)

A theory of relations is presented that provides a detailed account of the logical structure of relational complexes. The theory draws a sharp distinction between relational complexes and relational states. A salient difference is that relational complexes belong to exactly one relation, whereas relational states may be shared by different relations. Relational complexes are conceived as structured perspectives on states ‘out there’ in reality. It is argued that only relational complexes have occurrences of objects, and that different complexes of the (...) same relation may correspond to the same state. (shrink)

A new logic is presented without predicates—except equality. Yet its expressive power is the same as that of predicate logic, and relations can faithfully be represented in it. In this logic we also develop an alternative for set theory. There is a need for such a new approach, since we do not live in a world of sets and predicates, but rather in a world of things with relations between them.

Recent challenges of the mechanistic world picture seem only to have strengthened the position of mathematics. So it continues to guarantee perfect predictability, the dream of physicalism. During recent decades, however, computer simulations have shown mathematicians that even simple sets of equations may have, not an exact, but a whole range of solutions. With some of their examples we demonstrate the unpredictable behavior of simple systems. As a result, the dream is over. On the other hand, mathematicians also discovered that (...) previously 'chaotic' phenomena could be represented by relatively simple formules. This leads to a dramatic increase in the explanatory power of mathematics. This change of the scientific scenery will have a profound methodological impact on the relationship between the natural and the other sciences. (shrink)

Summary A pattern can be found in the history of semiconductor electronics, which largely appears to coincide with that of scientific revolutions as described by Thomas Kuhn1. However, the history of semiconductor electronics has some characteristics which suggest that Kuhn's model requires correction in important respects.

Anhand von zwei Unterbereichen der künstlichen Intelligenz - den Expertensystemen und der wissenschaftlichen Entdeckung - wird aufzuzeigen versucht, daß die Beziehung zwischen der "formalen" und der "intuitiven" Kultur aus dem Gleichgewicht geraten ist. Dem Bereich der Intuition sollte größere Aufmerksamkeit gewidmet werden.

In recent years, animal welfare has become an important element of sustainable production that has evolved along with the transformation of animal production systems. Consumer attitudes towards farm animal welfare are changing around the world, especially at emerging markets of Asia, Africa and Latin America. Survey-based research on consumer attitudes towards farm animal welfare has increased. However, the geographical coverage of studies on consumer attitudes and perceptions about farm animal welfare has mostly been limited to Europe, and North America. Until (...) now, Latin American consumers’ attitudes towards animal welfare have not been well studied. Despite the fact that Mexico, Chile and Brazil belong to the same region, there are marked differences between these countries in terms of their economical and geographical characteristics among other factors. Those differences potentially have an impact on consumer attitudes towards animal welfare and livestock production systems in general. Given the evidence from the literature review, it seems advisable that Latin American producers and food industry who engage in animal welfare-enhancing practices should clearly label their products with information on the type of husbandry system to reach those consumers who want to make an informed choice. Therefore, there are some aspects that need to be studied and cannot be worked separately in order to promote and understand consumer attitudes towards dairy and beef systems, such as geography, economic development, and politics. (shrink)

Sidonius Apollinaris’ Epist. 3.12 tells how one day, while leaving Lyons, he caught a couple of gravediggers about to violate his grandfather Apollinaris’ grave, which had become unrecognizable over time. He instructs the addressee, his nephew Secundus, to restore the tomb mound and provide it with a stone for which he attaches the text. Whereas this letter is usually interpreted as a piece of self-promotion by the author for his filial piety and expert storytelling, this article suggests that there is (...) a significant subtext to be found in Lucan's Pharsalia which makes the letter first and foremost a rehabilitation of Apollinaris while strongly suggesting that the latter was executed. There follow some rather more tentative thoughts trying to grasp the precise critical moment in time for this rehabilitation. It is argued that this could be Sidonius’ departure for Clermont, in 469/470 to take on the episcopate, after his term as City Prefect of Rome and a stay in Lyons with Bishop Patiens. The letter is aimed at bolstering family cohesion in the conflict of interests between Auvergne and Provence and at securing Sidonius’ position as incumbent bishop. (shrink)

This history of human origin studies covers a wide range of disciplines. This important new study analyses a number of key episodes from palaeolithic archaeology, palaeoanthropology, primatology and evolutionary theory in terms of various ideas on how one should go about such reconstructions and what, if any, the uses of such historiographical exercises can be for current research in these disciplines. Their carefully argued point is that studying the history of palaeoanthropological thinking about the past can enhance the quality of (...) current research on human origins. The main issues in the present volume are the uses of disciplinary history in terms of present-day research concerns, the relative weight of cultural and other 'external' contexts, and continuity and change in theoretical perspectives. The book's overall approach is an epistemological one. It does not, in other words, primarily address anthropological data as such, but our ways of handling such data in terms of our most fundamental, but usually quite implicit theoretical presuppositions. (shrink)