In this paper presents a Maximum Power Point Tracking (MPPT) technique based on the Hill Climbing Search (HCS) method and fuzzy logic system for Wind Turbines (WTs) including of Permanent Magnet Synchronous Generator (PMSG) as generator. In the conventional HCS method the step size is constant, therefor both steady-state response and dynamic response of method cannot provide at the same time an...

Introduction: Anabolic activity is a crucial activity in articular chondrocytes and its failure is one major reason of osteoarthritic cartilage degeneration. Unclear are the intracellular factors responsible for upand down regulation of the molecules of interest. In this respect, the transcription factor Sox-9, a member of the HMG-domain transcription factor family, elicited much of interest as...

Stimulation of bone formation by PTH is related to mechanosensitivity. The response to PTH treatment in intact bone could therefore be blunted by unloading. We studied the effects of mechanical loading on the response to PTH treatment in bone healing. Most fractures occur in the metaphyses, therefor we used a model for metaphyseal bone injury. One hind leg of 20 male SD rats was unloaded via in...

This paper considers interconnected nonlinear dynamical systems and studies observers for such systems. For single systems the notion of quasi-input-to-state dynamical stability (quasi-ISDS) for reduced-order observers is introduced and observers are investigated using error Lyapunov functions. It combines the main advantage of ISDS over input-to-state stability (ISS), namely the memory fading ...

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The retrieval problem we consider is the following: given a large collection of images of polygonal shapes and a query polygon, we want to retrieve those shapes in the image database that ``share'' some parts with the query polygon. In our approach, the database polygons are decomposed but the query polygon is not. In an initial search in the database, the database polygon parts are matched aga...

INTRODUCTION Shimming a magnetic field usually requires an additional set of complex coils which act independently from the linear gradient system used for MRI. Therefor a unique coil has to be developed for each field order, which is very extensive. In this study a novel matrix gradient design is presented, which is capable of generating both linear gradient fields for imaging and at the same ...

In order to support swallowing, the efficacy of functional electrical stimulation for different stimulation settings of the submental musculature has been investigated. The stimulation was administrated at rest and synchronously to voluntary initiated swallows. The onset of a swallow was detected in real-time by a combined electromyography/ bioimpedance measurement at the neck in order to trigg...

The increasing market turbulence and the increasing need for the creation of competitive advantages force businesses to rethink the way they perform their business. This rethinking is often performed unstructured or fragmented, and they fail to consider the business as a whole. Therefor there is a need for making a diagnosis as a basis for redesigning the business. In order to perform this diag...

Most early programs (and far too many recent ones) have taken a purely metric approach to the interpolation (or contouring) problem for arbitrarily distributed data points. They collected all data points within a given distance from the estimation point, or the nearest six, or other variants intended to select both a "reasonable" number of data points, and also to select a "surrounding" set. Mo...