			Home About us Contact

Common Position (common + position)

Distribution by Scientific Domains

Humanities and Social Sciences	50%

Selected Abstracts

Problems For Semantic Externalism and A Priori Refutations of Skeptical Arguments

DIALECTICA, Issue 1 2000
Keith Butler
Summary A familiar sort of argument for skepticism about the external world appeals to the evidential similarity between what is presumed to be the normal case and the case where one is a brain in a vat (or BIV). An argument from Putnam (1981, ch. 1) has been taken by many to provide an a priori refutation of this sort of skeptical argument. The question I propose to address in this paper is whether Putnam's argument affords us an a priori refutation of skeptical arguments that appeal to the claim that one does not know that one is not a BIV. I will develop a negative answer to this question along two related fronts. Along the first front I defend against new criticisms the common position that the externalism on which Putnam's argument is based entails skepticism about the meanings of sentences in our language and the contents of our thoughts. I do not take this to be a refutation of externalism or externalist arguments; rather, I see this as a motivation to locate the difficulty with arguments for externalism. But if externalism is abandoned, of course, the anti-skeptical argument it has widely been taken to support must be abandoned along with it. I will argue, however, that this is not a significant loss, because along a second front I will argue that externalism cannot be given a priori justification; it is therefore ill-suited to ground an a priori refutation of BIV skepticism anyway. [source]

The European Union in international environmental negotiations: an analysis of the Stockholm Convention negotiations

ENVIRONMENTAL POLICY AND GOVERNANCE, Issue 1 2009
Tom Delreux
Abstract This article focuses on the way the European Union acted as a negotiating party during the international negotiations leading to the Stockholm Convention on Persistent Organic Pollutants (1998,2000). Starting from a principal,agent model, the article discusses how the EU participated in these negotiations and how the internal decision-making process developed. It argues that the EU was able to negotiate in a unified and influential way by defending a common position, which was expressed by a flexible negotiation arrangement, at the international level. Three features of the EU decision-making process engendered such a strong EU negotiation arrangement: homogeneous preferences among the actors in the EU, symmetrically distributed information among them and a cooperative and institutionally dense decision-making context. Copyright © 2009 John Wiley & Sons, Ltd and ERP Environment. [source]

Extent of peri-implantitis-associated bone loss

JOURNAL OF CLINICAL PERIODONTOLOGY, Issue 4 2009
Christer Fransson
Abstract Objective: The purpose of the present study was to describe the extent of peri-implantitis-associated bone loss with regard to implant position. Material and methods: Patient files and intra-oral radiographs from 182 subjects were analysed. Among the 1070 examined implants, 419 exhibited peri-implantitis-associated bone loss. The position of each implant within the jaw and fixed reconstructions was determined. In the radiographs the distance between the abutment-fixture junction and the most coronal position of bone to implant contact was assessed at the 419 "affected" implants using a magnifying lens (× 7) with a 0.1 mm graded scale. Results: About 40% of the implants in each subject was affected by peri-implantitis-associated bone loss. The proportion of such implants varied between 30% and 52% in different jaw positions and the most common position was the lower front region. In addition, affected implants were found in larger proportions among "mid" than "end" abutments irrespective of supporting fixed complete or fixed partial dentures. Conclusion: It is suggested that peri-implantitis occurs in all jaw positions and that an "end"-abutment position in a fixed reconstruction is not associated with an enhanced risk for peri-implantitis. [source]

Very high conservation between Cyp6a2 from Drosophila melanogaster and its ortholog Cyp6a26 from D. simulans

INSECT SCIENCE, Issue 1 2007
SOPHIE TARÈS
Abstract Although Drosophila simulans is closely related to D. melanogaster, very few cytochrome P450 genes have been studied in this species until now. As Cyp6a2 from D. melanogaster is a major gene implicated in the detoxification of xenobiotic molecules, we decided to look for its ortholog in D. simulans. The isolated gene, Cyp6a26, presents structural characteristics very similar to those of Cyp6a2: an identical size of 1 590-bp comprising two exons separated by a 69-bp intron and a nucleotide sequence homology of 95%. Many putative transcriptionally important motifs were identified in the upstream DNAs of the two genes but only 16 elements are in common positions. Treatment of flies with phenobarbital leads to an increased production of Cyp6a26 mRNAs. The expression of Cyp6a26 mRNAs varies following developmental stages in the same manner as Cyp6a2. Immunohistochemistry experiments of phenobarbital-treated adult drosophila show that the spatial expression pattern of the two proteins is also conserved between the two species. All these data argue in favor of the conservation of the function of these homologous genes between the two Drosophila species. [source]