This paper analyses the Noether symmetries and the corresponding conservation laws for Chern-Simons Lagrangians in dimension d = 3. In particular, we find an expression for the superpotential of ChernSimons gravity. As a by-product the general discussion of superpotentials for 3rd order natural and quasi-natural theories is also given. PACS number(s): 04.20.Fy, 11.10Kk, 11.30.-j, 04.20.Cv

Following the IAEA definitions, [1], a passive component does not need any external input or energy to operate and it relies only upon natural physical laws (e.g. gravity, natural convection, conduction, etc.) and/or on inherent characteristics (properties of materials, internally stored energy, etc.) and/or ‘intelligent’ use of the energy that is inherently available in the system (e.g. decay ...

In this paper we present decentralized control policies for spacecraft formation, based on the simple idea of cyclic pursuit. First, we extend the existing cyclic-pursuit control laws devised for a single integrator to a double integrator. Such dynamically extended control laws only require relative measurements of position and velocity of two leading neighbors, and allow spacecraft to converge...

The discovery of evolutionary laws of financial market is always built on the basis of financial data. Any financial market must be controlled by some basic laws, including macroscopic level, submicroscopic level and microscopic level laws. How to discover its necessity-laws from financial data is the most important task of financial market analysis and prediction. Based on the evolutionary com...

In this paper we discuss and discover several conservation and associated decay laws in distributed coordination control systems, in particular in formation shape control systems. Specifically, we reveal conservations of linear momentum and angular momentum for gradient-based multi-agent formation systems modelled by single integrators, and show several corresponding conservation/decay laws for...

Whereas in the United States work in machine translation (MT) has only recently been reinstated as a 'respectable' natural language processing (NLP) application, it has long been considered a worthwhile and interesting topic for research and development in both Europe and Japan. In terms of number of projects in one sub-field of computational linguistics, MT is currently perhaps the most import...

After a brief discussion of current government uses and needs for human language technology, this paper will discuss the uses which will probably survive in the future as well as attempt to define some anticipated ones. Business uses, military uses, and education/training receive the most focus today. Current state of the art technologies are providing initial resources to enable better managem...

The paper describes developments and results of the work being carried out during the European research project CATCH-2004 (Converse in AThens Cologne and Helsinki). The objective of the project is multi-modal, multi-lingual conversational access to information systems. This paper concentrates on issues of the multilingual telephony-based speech and natural language understanding components.