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No black holes at IceCube
(2006)
Die Driften der Wörter in öffentlichen Räumen sind vielfältig. Neue Wortentwicklungen belegen unterschiedliche Interessen, "chillen" und "dissen" andere als das in der konservativen Züricher Zeitung zuerst erschienene "share-holder-value". Im Folgenden soll eine sinnbezoge Verallgemeinerung unternommen werden, die die Handlungen der Akteure mit der strukturellen Ebene verbindet. Die Veränderungen in den Verwendungen sollen zu strukturellen sozialen und sprachlichen Rahmenbedingungen in Bezug gesetzt werden. Wie werden Neuerungen und Änderungen der Anwendungsbedingungen von Wörtern vor dem Hintergrund des Wissens um die traditionelle Standardsprache und deren soziale Funktion wahrgenommen? Welche Funktionen haben Neologismen in Abgrenzung zu diesem Standard?
Eine Reihe von nicht in Kodifikationen des Standards aufgenommenen sprachlichen Mustern wird im Blick auf ihre Karrieren in verschiedenen mündlichen und schriftlichen Texten in einer Flut von Veröffentlichungen thematisiert, meist in der Hoffnung hier grammatische Entwicklungen und die Basis für eine Orientierung der Grammatikschreibung an der Pragmatik zu entdecken. Im Folgenden soll Sprache nicht „konzeptuell schriftlich“ gedacht und „sozusagen literal idealisiert“ werden. Es soll argumentiert werden für eine einheitliche, mit Sprachgeschichte, ontogenetischem Spracherwerb und Variantenbildung verträgliche Erklärung nicht-standardisierter sprachlicher Muster im Rahmen einer Grammatikalisierungstheorie.
The concept of Large Extra Dimensions (LED) provides a way of solving the Hierarchy Problem which concerns the weakness of gravity compared with the strong and electro-weak forces. A consequence of LED is that miniature Black Holes (mini-BHs) may be produced at the Large Hadron Collider in p+p collisions. The present work uses the CHARYBDIS mini-BH generator code to simulate the hadronic signal which might be expected in a mid-rapidity particle tracking detector from the decay of these exotic objects if indeed they are produced. An estimate is also given for Pb+Pb collisions.
The work presented here addresses the question of how to determine whether a grammar formalism is powerful enough to describe natural languages. The expressive power of a formalism can be characterized in terms of i) the string languages it generates (weak generative capacity (WGC)) or ii) the tree languages it generates (strong generative capacity (SGC)). The notion of WGC is not enough to determine whether a formalism is adequate for natural languages. We argue that even SGC is problematic since the sets of trees a grammar formalism for natural languages should be able to generate is difficult to determine. The concrete syntactic structures assumed for natural languages depend very much on theoretical stipulations and empirical evidence for syntactic structures is rather hard to obtain. Therefore, for lexicalized formalisms, we propose to consider the ability to generate certain strings together with specific predicate argument dependencies as a criterion for adequacy for natural languages.
This paper compares two approaches to computational semantics, namely semantic unification in Lexicalized Tree Adjoining Grammars (LTAG) and Lexical Resource Semantics (LRS) in HPSG. There are striking similarities between the frameworks that make them comparable in many respects. We will exemplify the differences and similarities by looking at several phenomena. We will show, first of all, that many intuitions about the mechanisms of semantic computations can be implemented in similar ways in both frameworks. Secondly, we will identify some aspects in which the frameworks intrinsically differ due to more general differences between the approaches to formal grammar adopted by LTAG and HPSG.
Relative quantifier scope in German depends, in contrast to English, very much on word order. The scope possibilities of a quantifier are determined by its surface position, its base position and the type of the quantifier. In this paper we propose a multicomponent analysis for German quantifiers computing the scope of the quantifier, in particular its minimal nuclear scope, depending on the syntactic configuration it occurs in.
Gravitational radiation from ultra high energy cosmic rays in models with large extra dimensions
(2006)
The effects of classical gravitational radiation in models with large extra dimensions are investigated for ultra high energy cosmic rays (CRs). The cross sections are implemented into a simulation package (SENECA) for high energy hadron induced CR air showers. We predict that gravitational radiation from quasi-elastic scattering could be observed at incident CR energies above 10^9 GeV for a setting with more than two extra dimensions. It is further shown that this gravitational energy loss can alter the energy reconstruction for CR energies E_CR > 5 10^9 GeV.
The globalized Western culture of innovation, as propagated by major aid institutions, does not necessarily lead to empowerment or improvement of the well-being of the stakeholders. On the contrary, it often blocks viable indigenous innovation cultures. In African societies and African Diasporas in Latin America, cultures of innovation largely accrue from the informal, not the formal sector. Crucial for their proper understanding is a threefold structural differentiation: between the formal and informal sector, within the informal sector, according to class, gender or religion, and between different transnational social spaces. Different innovation cultures may be complementary, mutually reinforcing, or conflicting, leading in extreme cases even to a ‘clash of cultures’ at the local level. The repercussions of competing, even antagonistic agencies of innovative strategic groups are demonstrated, analyzing the case of the African poor in Benin and the African Diasporas of Brazil and Haiti.