Abstract: A circulatory assist system has a pump with a motor coupled to rotate the pump at a selectable speed. A controller drives the motor at a target speed and collects blood flow measurements during operation of the pump. An impaired flow condition is identified when a plurality of successive blood flow measurements are between an expected minimum flow and a low flow threshold, such that the low flow would necessitate issuing an alert. During the impaired flow condition, it is detected whether an inflow obstruction exists by determining whether a reduction in speed of the pump is correlated with a predetermined increase in the blood flow measurements. If the inflow obstruction is detected, then the speed of the pump is further reduced to further increase the blood flow measurements.

Abstract: A computer implemented method and computer program product for sharing licensed applications between virtual machines. When an event is intercepted which comprises an attempted access of a file stored in a hard disk of a guest operating system, wherein the file type has no association with any application installed on the guest operating system, an application installed on a host operating system capable of opening the file is identified. An association of the file type with an application on the host operating system is established, and the file is copied from the hard disk of the guest operating system to a temporary location on the host operating system. The file is opened and accessed using the associated application on the host operating system. The file is then copied back to the hard disk of the guest operating system.

Abstract: A system, method and computer-readable medium for adapting command line output message streams in a virtualized command line interface (CLI) environment. In accordance with the method of the present invention, a virtualized CLI command is entered and executed. The virtualized CLI command encapsulates a guest operating system command having an associated standard output message. In response to executing the virtualized CLI command, the standard output message is piped to an output message file. Within the standard output message file, a structured array is used to search the standard output message for matches between strings within the standard output message and one or more specified message strings identified in the structured array. In response to finding a match between the specified message strings and the strings within the standard output message, the specified message string within the standard output message is replaced with a replacement message string.

Abstract: An artificial heart pump system has a heart pump implanted in a patient. A pump control unit worn by a patient includes a programmable device for adapting a secure aspect of heart pump operation in response to pump operating commands. The pump control unit has a wired interface and a wireless interface. A clinical external unit is adapted to be connected to the wired interface for delivering a pump operating command to the pump control unit. An auxiliary external unit is adapted to be connected to the wireless interface for collecting patient and/or pump system performance-related data from the pump control unit. The wireless interface is unable to consummate a pump operating command.

Abstract: In a left ventricular assist device (LVAD) a rotodynamic blood pump (10) is powered by a brushless DC motor (12). A power supply (14) supplies power to the motor (12). Three feedback channels, one for each of voltage, current, and motor speed lead to a microcontroller or microprocessor (18). The three feedback waveforms are analyzed, and from these waveforms, motor input power, patient heart rate, current pump flow rate, and systemic pressure are determined. The microprocessor (18) then calculates a desired flow rate proportional to the patient heart rate. The microprocessor communicates a new power output to a commutation circuit (16), which regulates power to the motor (12). The pump (10) also includes safety checks that are prioritized over desired pump flow. These include prevention of ventricular suction, low pulsatility, minimum and maximum pump speed, minimum speed-relative pump flow, minimum absolute pump flow, minimum and maximum motor input power.

Abstract: An artificial heart pump system has a heart pump is-implanted in a patient. A pump control unit worn by a patient includes a programmable device for adapting a secure aspect of heart pump operation in response to pump operating commands. The pump control unit has a wired interface and a wireless interface. A clinical external unit is adapted to be connected to the wired interface for delivering a pump operating command to the pump control unit. An auxiliary external unit is adapted to be connected to the wireless interface for collecting patient and/or pump system performance-related data from the pump control unit. The wireless interface is unable to consummate a pump operating command.

Abstract: A computer implemented method and computer program product for sharing licensed applications between virtual machines. When an event is intercepted which comprises an attempted access of a file stored in a hard disk of a guest operating system, wherein the file type has no association with any application installed on the guest operating system, an application installed on a host operating system capable of opening the file is identified. An association of the file type with an application on the host operating system is established, and the file is copied from the hard disk of the guest operating system to a temporary location on the host operating system. The file is opened and accessed using the associated application on the host operating system. The file is then copied back to the hard disk of the guest operating system.

Abstract: A method for improving the efficiency of Internet Protocol Control Block (INPCB) lookup operations at a TCP receiver and TCP sender. The TCP/IP stack is modified such that every data packet generated includes both data and INPCB address information. Specifically, the TCP/IP stacks of a sending device and a receiving device are modified to provide a contemporaneous transmission of INPCB addresses along with each data packet. The TCP/IP stack of the receiver is also modified such that the receiver echoes this INPCB address along with each TCP packet sent back to the sender to eliminate the necessity of an INPCB address lookup operation at the sending device. Contemporaneous transmission of data and INPCB addresses facilitates direct delivery of data packets to the corresponding sockets.

Abstract: A method, computer program product, and a data processing system for activating a screensaver in a data processing system is provided. A timeout value that defines an idle interval after which a screensaver is to be activated is set. An analysis of contents of a video memory is performed. The timeout value is adjusted responsive to the analysis.

Abstract: A system, method and computer-readable medium for adapting command line output message streams in a virtualized command line interface (CLI) environment. In accordance with the method of the present invention, a virtualized CLI command is entered and executed. The virtualized CLI command encapsulates a guest operating system command having an associated standard output message. In response to executing the virtualized CLI command, the standard output message is piped to an output message file. Within the standard output message file, a structured array is used to search the standard output message for matches between strings within the standard output message and one or more specified message strings identified in the structured array. In response to finding a match between the specified message strings and the strings within the standard output message, the specified message string within the standard output message is replaced with a replacement message string.

Abstract: The present invention provides a vortex generator that in one embodiment includes an apex having a first width; a rear face having a second width being greater than the first width; a first and second sidewall each extending from the first width of the apex to the second width of the rear face, wherein at least a portion of each of the first and second sidewall have a peak including a convex surface; and a concave work surface positioned between the peak of the first and the second sidewall, wherein the concave work surface has an intake at the apex and an outlet at the rear face. In another embodiment, the exterior faces of the sidewalls include a planar surface.

Abstract: The present invention provides an air shield comprising side panel assemblies in hinged connection to each rear edge of a sidewall of a tractor and an actuation assembly including a boss in rotational engagement to the frame of the tractor and between a cab and a fifth wheel of the tractor, a lever having an adjustable length engaged to the boss at a first end and engaged to side panel assembly at a second end, and a spring including a first end connected to the side panel assembly and a second end connected to the frame of the tractor between the boss and the rear of the trailer frame.

Abstract: A method of choosing a domain name server to resolve a name resolution request includes receiving a name resolution request and associating at least one domain name server listed in a domain name server table with a timestamp. The method further includes accessing a domain name server from the domain name server table based on the timestamp. A system including means for accomplishing similar actions is also disclosed.

Abstract: A method, system, and computer program product for selectively allowing email identified as spam by a spam filter to be received by an end-user.

Abstract: A heart assist device, for example a left ventricular assist device (LVAD) including a blood pump, is controlled on the basis of a ratio of the pump's speed and the patient's heart rate. The patient's activity and a required cardiac assist level can be defined via the heart beat rate of the patient and a rotational speed of the LVAD pump. Controlling the pump of the heart assist device based on the pump speed and the patient's heart rate enables the heart assist device to respond to changes in the patient's activity level.

Abstract: A method, computer program product, and a data processing system for activating a screensaver in a data processing system is provided. A timeout value that defines an idle interval after which a screensaver is to be activated is set. An analysis of contents of a video memory is performed. The timeout value is adjusted responsive to the analysis.

Abstract: A container having an expandable thickness for better insulation. The container has two walls which may be expanded to form an insulating air space therebetween. The expansion may be caused by compressible foam, an expandable strip material, a projection running on an inclined surface arrangement or by a gas generating material. The expansion may be activated by removing a vacuum, pulling a physical strip, by rotating one layer within the other or by crushing microcapsules to release gas. The expanded container provides better insulation for hot foods but allows a smaller thickness for storage.

Abstract: The invention relates to a router that keeps a short-lived cache of DHCP packets. Each time the router receives a DHCP request or discover packet, the router checks to see if the packet is already in the cache. If the packet is in the cache and has already been processed, the router will discard or ignore the duplicate packet.

Abstract: A heart assist device, for example a left ventricular assist device (LVAD) including a blood pump, is controlled on the basis of a ratio of the pump's speed and the patient's heart rate. The patient's activity and a required cardiac assist level can be defined via the heart beat rate of the patient and a rotational speed of the LVAD pump. Controlling the pump of the heart assist device based on the pump speed and the patient's heart rate enables the heart assist device to respond to changes in the patient's activity level.

Abstract: In a left ventricular assist device (LVAD) a rotodynamic blood pump (10) is powered by a brushless DC motor (12). A power supply (14) supplies power to the motor (12). Three feedback channels, one for each of voltage, current, and motor speed lead to a microcontroller or microprocessor (18). The three feedback waveforms are analyzed, and from these waveforms, motor input power, patient heart rate, current pump flow rate, and systemic pressure are determined. The microprocessor (18) then calculates a desired flow rate proportional to the patient heart rate. The microprocessor communicates a new power output to a commutation circuit (16), which regulates power to the mortor (12). The pump (10) also includes safety checks that are prioritized over desired pump flow. These include prevention of ventricular suction, low pulsatility, minimum and maximum pump speed, minimum peed-relative pump flow, minimum absolute pump flow, minimum and maximum motor input power.