Abstract: A method for data communications includes conveying from a server to a client a virtual index file, which identifies multiple sequences of media files available for download to the client, including a plurality of the sequences that contain a given item of streaming content for download to the client at a different, respective data rate for each sequence. A selection is received from the client of a sequence among the plurality of the sequences of the media files. Responsively to the selection, the media files in the sequence are created at the respective data rate and are downloaded to the client.

Abstract: The present invention relates to a hierarchical system and method for task assignment (TA), coordination and communication of multiple Unmanned Aerial Vehicles (UAV's) engaging multiple attack targets and conceives an ad-hoc routing algorithm for synchronization of target lists utilizing a distributed computing topology. Assuming limited communication bandwidth and range, coordination of UAV motion is achieved by implementing a simple behavioral flocking algorithm utilizing a tree topology for target list routing. The TA algorithm is based on a graph-theoretic approach, in which a node locates all the detectable targets, identifies them and computes its distance to each target. The node then produces an attack plan that minimizes the sum of distances of the UAV's in the subtree of a given node to the targets.

Abstract: The present invention provides orally-administrable compositions comprising stable amorphous calcium carbonate (ACC). The compositions are preferably prepared as solid dosage forms such as tablets, capsules and powders. The present invention further provides methods for supplementing oral calcium intake in subjects and as well as methods for treating osteoporosis, osteomalacia and related diseases.

Abstract: The present invention provides an electronic documents management system and method for classifying, publishing, searching and locating electronic documents. Electronic documents are classified and published via an ontological description consisting of at least one vector, each vector comprising at least one feature-value pair. Each vector's slot corresponds to a feature and the vector's range of each slot corresponds to the set of all possible values of each feature. In order to classify an electronic document, two hashing functions are applied. A first hashing function maps each feature to a slot number, corresponding to a coordinate in the appropriate vector. A second hashing function maps the value of each pair to a numeric value of a slot, corresponding to the range of each coordinate. The result of the two hashing functions is an ordered vector that can be mapped to a node in hypercube.

Abstract: A modular switch, comprising a plurality of backplane sub-buses; a plurality of cards which are each allocated one or more of the backplane sub-buses; and a controller which dynamically allocates the backplane sub-buses to the plurality of cards, based on the bandwidth needs of the cards. Preferably, the bandwidth capacity of substantially all the backplane sub-buses is less than the sum of the maximal transmission bandwidth capacities of the cards.

Abstract: There is therefore provided, in accordance with an embodiment of the present invention, a method for processing an amplitude modulated (AM) optical beam amplitude modulated with a modulation pattern having an extinction ratio (ER), said AM beam having a carrier frequency and a carrier frequency amplitude, the method comprising: estimating an absolute amplitude extremum for the AM beam that is either an absolute amplitude maximum or an absolute amplitude minimum, to which recurrent amplitude extrema of the AM beam are approximately equal; estimating a corresponding phase to which the phase of the AM beam is substantially equal whenever the amplitude of the AM beam is substantially equal to the amplitude extremum; and adjusting at least one of the magnitude and phase of the carrier amplitude of the AM beam responsive to the amplitude extremum and its corresponding phase to increase the extinction ratio of the modulation pattern.

Abstract: A method and apparatus are provided for enabling presentation of supplemented video signal in place of externally provided video signal at a subscriber's device. By an embodiment of this invention, based on certain attributes received from the TV programmer, certain parts of certain video signals are replaced by the subscriber's device with different content that has been pre-stored at that subscriber's device. In addition, such replacements may be reported to the TV programmer.