Abstract:
An implantable prosthesis for placement in hollow tubular organs is described alongwith an instrument for deploying the said prosthesis. On radial compaction, the prosthesis has a low profile, allowing introduction into the body with a deployment instrument of low calibre. The prosthesis has a longitudinal strut to provide longitudinal support. One or more, outwardly biased, flexible curvilinear members with good shape-memory, symmetrically attached to the leading end of the prosthesis help unroll the prosthesis during deployment. Magnetized wires or powder may be attached to the prosthesis to facilitate this process and provide in addition radial elasticity to the prosthesis. The prosthesis may have tubular extensions to allow the treating lesions that involve the parent tubular organ and its branches. Alternatively, the prosthesis may be provided with apertures which can be widened in vivo. For implantation in branches, the prosthesis may be provided with a flange at its trailing end.
Abstract:
A method for interconnection of two tubular organs via an opening at one end of an end portion of a first organ and an aperture in a side wall of a second organ. The end portion is initially passed through a first passage of a first element until the end portion projects past an end edge of the element, whereupon the end portion is everted round the end edge. Gripping parts of a second element with a second passage are then inserted in the second organ via the aperture. Finally, the first element with the everted portion of the first organ is inserted in the second passage, whereby the gripping parts are influenced in such a manner that they come into engagement with the inside of an edge portion of the aperture. A device for implementation of the method.
Abstract:
The present invention provides a method and mechanism for optimizing the power consumption of a micro-electronic circuit. According to an embodiment, when optimizing the power consumption of a micro-electronic circuit, one or more candidates for applying one or more optimization techniques may be identified. Then, the one or more candidates may be marked with the one or more optimization techniques within the micro-electronic circuit without altering the data and/or control paths of the circuit. Then, after timing and logic optimization, each power saving technique applied to the one or more candidates may be evaluated to determine whether the technique saves power and/or satisfies the timing requirement of the circuit. Further, each power saving technique applied to the one or more candidates may be evaluated to determine whether the technique is reducible, and if so, then the technique may be reduced to determine whether such reduction improves the circuit's timing.
Abstract:
In a method for optimizing performance in a memory system, a data structure configured to provide at least one free block of memory is received in the memory system. At least one bucket of memory is released in a swap device of the memory system corresponding to at least one free block of memory provided by the data structure.
Abstract:
A method for assigning servers to provide multiple description bitstreams to a mobile client (in a mobile client environment) or to a fixed client (in a fixed client environment). In one embodiment, the present invention, upon receiving a request from a mobile client to have media data streamed thereto, analyzes a plurality of servers to determine a first candidate server for providing a first multiple description bitstream to the base station along a first path. The present method also determines a second candidate server for providing a second multiple description bitstream to the base station along a second path. The present method then sends a request to the first candidate server to provide the first multiple description bitstream to a mobile client through a base station along the first path, and also sends a request to the second candidate server to provide the second multiple description bitstream to the mobile client through the same base station along a second path. In another embodiment, there are two separate paths from two separate servers to two separate base stations and then from each base station there is a separate path to the mobile client. In still another embodiment, there are two paths from a single server to two separate base stations and then from each base station there is a separate path to the mobile client. In one fixed client embodiment, the present invention is able to assign a plurality of servers to provide a plurality of MD bitstreams to the fixed client.
Abstract:
A computer system is provided including a processor, a persistent storage device, and a main memory connected to the processor and the persistent storage device. The main memory includes a compressed cache for storing data retrieved from the persistent storage device after compression and an operating system. The operating system includes a plurality of interconnected software modules for accessing the persistent storage device and a filter driver interconnected between two of the plurality of software modules for managing memory capacity of the compressed cache and the buffer cache.
Abstract:
A new technique for channel characterization for Advanced Compatible TV (ACTV) broadcasting systems is hereby proposed that conforms to the current practice of transmitting a ghost cancellation reference (GCR) signal during the vertical blanking interval (VBI). A copy of the GCR signal is stored at the receiver, and is used to extract the effective ghost channel parameters via digital signal processing techniques. A pair of equi-length, binary (.+-.) sequences is said to be complementary if the sum of the linear autocorrelation functions of the sequences is identically zero for all shifts other than zero, and provides a high correlation gain at zero shift. Such sequences can be sequentially transmitted on the allotted VBI line in the appropriate fields, along with pairwise constant signals in the corresponding fields of a basic eighth field sequence. To conform to the positivity constraint of the transmitted signal for NTSC compatible systems, each complementary sequence is transmitted on a pedestal. At the receiver, the effect of the common constant signals are first removed by subtraction and the resultant signals are correlated with each of the two complementary sequences. The output of the correlators are added to directly yield estimates of the channel coefficients.
Abstract:
A method for interconnection of two tubular organs via an opening at one end of an end portion of a first organ and an aperture in a side wall of a second organ. The end portion is initially passed through a first passage of a first element until the end portion projects past an end edge of the element, whereupon the end portion is everted round the end edge. Gripping parts of a second element with a second passage are then inserted in the second organ via the aperture. Finally, the first element with the everted portion of the first organ is inserted in the second passage, whereby the gripping parts are influenced in such a manner that they come into engagement with the inside of an edge portion of the aperture. A device for implementation of the method.
Abstract:
Methods and systems thereof for monitoring the performance of a streaming media server are described. A quality-of-service criterion is accessed. A failure to satisfy the quality-of-service criterion during streaming of data from the server to a plurality of clients is identified without assembling the data at the plurality of clients.
Abstract:
Time-frequency coding in a multi-band ultra-wideband system is generally described. In this regard a hopping code agent is presented to select a frequency hopping code for encoding and decoding.