In this article, a fast and efficient open-circuit switch clamping diode fault diagnosis for neutral-point-clamped inverters is proposed. Multilevel converters employed in safety-critical applications should include fault-tolerant capability, where plays vital role. The proposed algorithm based on failure mode analysis, which logic-based approach. required signals measurements are available the...

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The aim of this paper is to give an alternative proof of a theorem about the existence of contact structures on five-manifolds due to Geiges. This theorem asserts that simply-connected five-manifolds admit a contact structure in every homotopy class of almost contact structures. Our proof uses the open book construction of Giroux.

OBJECTIVES The aim of this study was to determine the incidence, type, outcome, and possible risk factors of diving accidents in each year of a five year period presenting from one dive centre to a large teaching hospital accident and emergency (A&E) department. METHODS All patients included in this study presented to the A&E department at a local teaching hospital in close proximity to the l...

We present a non-singular instanton describing the creation of an open universe with a compactified extra dimension. The four dimensional section of this solution is a singular instanton of the type introduced by Hawking and Turok. The “singularity” is viewed in five dimensions as a smooth bubble of “nothing” which eats up a portion of spacetime as it expands. Flat space with a compact extra di...

FreeLing is an open-source multilingual language processing library providing a wide range of language analyzers for several languages. It offers text processing and language annotation facilities to natural language processing application developers, simplifying the task of building those applications. FreeLing is customizable and extensible. Developers can use the default linguistic resources...

This article considers the emergence of large-scale “commons-based peer production” projects such as Wikipedia.org from an institutional development perspective. The argument it makes is threefold. First, that that the lowered transaction costs and information abundance found online transform a subset of public goods problems, essentially replacing free-ridership with mass coordination as the c...

BACKGROUND Open drug scenes are gatherings of drug users who publicly consume and deal drugs. The authors conducted a study of five European cities that have met such scenes constructively. The aim was to investigate shared and non-shared interventions and strategies in order to increase the understanding of this type of problem. METHODS First a description was made for the cities of Amsterda...