Abstract: A method of damping tower oscillation in a wind turbine is provided. The method includes the steps of determining a rotor rotational speed of the wind turbine and controlling the rotor rotational speed such that a critical rotor speed is avoided, characterized in that it further comprises the following steps: selecting at least one input parameter value; selecting, according to the input parameter value, an operation mode for controlling the rotor rotational speed, wherein the operation mode is selected from a set of modes comprising a mode of auto tune operation; on the condition of the selected operation mode comprising the mode of auto tune operation, performing the following steps: detecting the tower oscillation frequency; calculating the critical rotor speed based on the detected tower oscillation frequency and controlling the rotor rotational speed to avoid the calculated critical rotor speed. An apparatus and a computer program product are also provided.

Abstract: A method for tracking a contour in cardiac phase contrast flow magnetic resonance (MR) images includes estimating a global translation of a contour in a reference image in a time sequence of cardiac phase contrast flow MR images to a contour in a current image in the time sequence of images by finding a 2-dimensional translation vector that maximizes a similarity function of the contour in the reference image and the current image calculated over a bounding rectangle containing the contour in the reference image, estimating an affine transformation of the contour in the reference image to the contour in the current image, and performing a constrained local deformation of the contour in the current image.

Abstract: A blade arrangement, with a rotor and a plurality of blades which are arranged on the periphery of the rotor in a ring, and a plurality of damping elements are provided. Between two directly adjacent blades at least two damping elements are arranged in series in the circumferential direction of the rotor. As a result of a centrifugal force, which acts in the radial direction, during a rotation of the rotor around a rotor axis adjacent damping elements come into contact with each other, and one of the two damping elements comes into contact with one of the two blades and the other of the two damping elements comes into contact with the other of the two blades.

Abstract: A recognition pipeline automatically partitions a 3D image of the human body into regions of interest (head, rib cage, pelvis, and legs) and correctly labels each region. The 3D image is projected onto a 2D image using volume rendering. The 3D image may contain the whole body region or any subset. In a learning phase, training datasets are manually partitioned and labeled, and a training database is computed. In a recognition phase, images are partitioned and labeled based on the knowledge from the training database. The recognition phase is computationally efficient and may operate under 2 seconds in current conventional computer systems. The recognition is robust to image variations, and does not require the user to provide any knowledge about the contained regions of interest within the image.

Abstract: A method of transferring data in an automation system having a plurality of communicatively connected communication stations is provided. The communicative connection of the communication stations follows a predefined hierarchy, in which a plurality of communication stations are grouped together in a line and an alias matched to the hierarchy is assigned to each communication station. Telegrams sent in the automation system designate a destination communication station also by its alias, whereby each line is closed to form a ring by way of its transition, designated as entry point, from the next higher line by way of the entry point, and telegrams in the ring thus resulting with the line are forwarded both in the direction of the hierarchy of the allocated alias designations and also in the opposite direction.

Abstract: A device for damping control of mechanical torsional oscillations of an electrical alternating current generator connected to a multi-phase power supply system, includes a controllable converter of an HVDC installation connected to the power supply system, a measurement and filter device for detection of a frequency-dependent signal in a frequency range of the torsional oscillations of the alternating current generator and a correction apparatus for correction of a control signal for the converter for the HVDC installation. The correction apparatus includes a single phase correction filter for correction of a phase frequency response of the frequency-dependent signal. The control signal is formed by a current nominal value of a current regulator of the converter or a triggering angle of the nominal valve and with the phase correction filter is configured to take a transfer function of the current regulator into account.

Abstract: There is described a node device of a serial bus system, a bus system with a node device of this type, and an input/output card. In serial bus system, in which individual node devices can have only a limited address space, and in which a number of input/output cards can be connected in order to control and/or regulate an item of external peripheral equipment, limitations arise for the individual input/output cards with regard to the available address space. Normally, the input/output cards, which are connected to the node device, are required to divide the address space of the node device among each other. In order to rectify this problem, the invention provides that a node device of a serial bus system, which has slots for input/output cards, is additionally equipped with a splitter for duplicating a received bus signal and for injecting the duplicated bus signal into another data line, the additional data line serially connecting the node device to input/output cards connected via the slots.

Abstract: A system and method for rendering images, and performing operations such as windowing and leveling, when the parameters of a client appliance are known and rendering images when the parameters of a client appliance are unknown. The invention also considers the rendering from the client appliance perspective and the server appliance perspective.

Abstract: A steel volume is modeled in a computer by means of a plurality of volume elements. The state of the steel volume at a given time comprises, for each volume element, characteristic quantities of an enthalpy existing at said time in the respective volume element and percentages, in which the steel is available in the respective volume element at the time in austenite, ferrite and cementite phases. For at least one volume element, the computer determines the time gradient of the characteristic quantities by resolving thermal conductivity and phase transition equations. One of the characteristic quantities is a locally invariable mean interstitial element concentration within the volume element in the austenite phase thereof.

Abstract: A device is provided having a support structure and a rotating shaft having a center axis which rotating shaft and support structure are pivotable supported against each other by at least one hydrodynamic rotary bearing including a first bearing part and a second bearing part pivotable relatively to each other, a lubricant and a contact zone between the first bearing part and the second bearing part at least when the hydrodynamic rotary bearing is at rest, wherein the rotating shaft and the support structure are shaped in such a way and the hydrodynamic rotary bearing is in such a way arranged on the rotating shaft and the support structure that the contact zone of the hydrodynamic rotary bearing is submerged in the lubricant even when the hydrodynamic rotary bearing is at rest.

Abstract: An overall semantic similarity score value between pairs of named entities in a text corpus is obtained by calculating for at least one pair of named entities a plurality of corresponding pair similarity score values according to a first and at least a second classifier using electronic information sources. Each pair similarity score value of the pair of named entities per classifier is normalized by calculating a rank list per classifier, for example, for each named entity. The rank list holds each pair of named entities of the text corpus, wherein a rank of each pair of named entities within the rank list reflects the respective pair similarity score value. Further an arithmetic mean of the normalized pair similarity score value of each pair of named entities is calculated to provide the overall semantic similarity score value.

Abstract: The invention relates to a catheter device for treating a blockage of a vessel, with the catheter device featuring a treatment catheter for treating the vessel blockage which is embodied as an integrated unit with front-mounted stent.

Abstract: A method and system for detecting lymph nodes in multiple complementary magnetic resonance (MR) sequences is disclosed. Anatomical landmarks, such as blood vessels, are extracted in a first MR sequence, such as an MR angiography (MRA) image. A search area is defined in at least one second MR sequence, such as a T1 weighted VIBE image, based on the anatomical landmarks extracted the first MR sequence. Lymph nodes are then detected in the search area of the second MR sequence. The lymph nodes can be detected by segmenting the search area into homogenous regions and determining whether each region is a lymph node using feature analysis.

Abstract: A method of transmitting data packets in a radio system between and emitter and a receiver. A nominal emission power for a data packet is determined according to a desired reception quality. The data packet is transmitted with an effective emission power. A new nominal emission power defined according to the reception quality for the transmission is calculated, taking into account the effectively applied emission power and the pre-determined nominal emission power. The data packet is retransmitted with the nominal emission power.

Abstract: Methods and systems for modeling cerebral aneurysm and their incoming and outgoing vessels from 3D image data are disclosed. Aneurysms and vessels are segmented from their background using a graph-cuts method. Begin and end of vessels are determined. Construction of a centerline of the incoming and outgoing vessels using a measure of vesselness in calculating a minimum cost path in a graph with nodes being representation of pixels is also disclosed. Vessel surface models are constructed from sub-voxel cross-sectional segmentation. The interpolation of vessels inside an aneurysm based on smooth continuity is disclosed. Selection of endo-vascular stents based on interpolation results is also provided.

Abstract: A method is disclosed for checking the switching region of a touch-free switching system with at least one sensor and at least one signal emitter, wherein the signal emitter sends data to the sensor. An extremely flexible and practical switching region check is achieved in at least one embodiment by the fact that a change in at least one system parameter of the switching system derives at least one first piece of information on the position of the signal emitter. The method represents an inexpensive possibility for checking a switching region, which has options for the definition and allocation of the switch-on, switch-off, and hysteresis regions.

Abstract: An imaging device comprises a semiconductor substrate including an array of pixel cells. Each pixel cell comprising an individually addressable pixel circuit for accumulating charge resulting from radiation incident on a pixel detector. The pixel circuit and the pixel detector can either be implemented on a single substrate, or on two substrates bonded together. The charge storage device can be a transistor, for example one of a pair of FET transistors connected as a cascade amplification stage. An imaging plane can be made up of one imaging device or a plurality of imaging devices tiled to form a mosaic. The imaging devices may be configured as a slot for certain applications, the slit or slot being scanned over the imaging plane. Control electronics can include addressing logic for addressing individual pixel circuits for reading accumulated charge from the pixel circuits.

Abstract: A method for directed machine learning includes receiving features including intensity data and location data of an image, condensing the intensity data and the location data into a feature vector, processing the feature vector by a plurality of classifiers, each classifier trained for a respective trained class among a plurality of classes, outputting, from each classifier, a probability of the feature vector belong to the respective trained class, and assigning the feature vector a label according to the probabilities of the classifiers, wherein the assignment produces a segmentation of the image.

Abstract: The apparatus of at least one embodiment includes an input unit, a storage unit, an output unit, and an interface to the imaging device, via which configuration parameters of the imaging device can be read out or transferred. A calculating unit either reads out the configuration parameters from the imaging device or sends the configuration parameters to the imaging device if they have been entered at the input unit by an operator, the configuration parameters being required for the purpose of specifying the quantity of a contrast medium. The calculating unit is so designed as to calculate, on the basis of the parameters that have been entered and/or read out and calculation formulas which are stored in the storage unit, the quantity of a contrast medium that is required for these parameters, and to display the quantity via the output unit.

Abstract: An end fitting of a surge arrester has a recess for receiving a rod, wherein the rod can be pressed inside the recess by applying an outer force to the end fitting. Furthermore, a corresponding device for pressing an end fitting and a method for pressing an end fitting are described. The end fitting contains a plurality of body edges delimited in an arc shape. Spaces between points on the body edge delimited in an arc shape and a center point of the recess are equidistant. Thus it is possible to exert a uniform force on all sides on a recess and thus provide an even deformation on all sides of the recess during pressing. As a result, accordingly pressed items, for example rods within the recess, are pressed within the recess on all sides.