摘要:
A method of NMR (nuclear magnetic resonance) excitation of a sample having a magnetic moment, including, applying a longitudinal magnetic field to the sample; and changing the magnetic moment in a substantially continuous manner by moving an effective magnetic-field vector &ohgr;e more than 90°, wherein for all portions of the sample in which the moment is changed, the angular velocity of the effective field vector at at least one angle, 90°+&agr;, is different from the angular velocity at 90°−&agr;.
摘要:
New methods of generating optimal inversion pulses and adiabatic pulses in magnetic resonance imaging are disclosed. Trajectories, maximum sweep rates, and velocity profiles are used in defining an optimal pulse, over support regions. Adiabatic pulses are optimized by using the trajectory as a constraint of optimization, but selecting trajectories with velocity profiles, without using the adiabatic condition as a constraint for optimizing the velocity profile. A method or inverting MR spins substantially, independently of the pulse duration, by selecting a transition width between 1.4 and 1.9 and dividing that width by the pulse duration is disclosed; and A new method of inverting adiabatic, MR, amplitude modulated spins, with a trajectory defined by sin .alpha./cos .alpha., where .alpha.
摘要:
A method of generating an adiabatic FM pulse, comprising: selecting a starting trajectory for the pulse; and determining a velocity profile along the trajectory by constraining at least a portion of the velocity profile only to fulfill an adiabatic condition other than a frequency frame adiabatic condition. Preferably, the other adiabatic condition is one defined in a double-rotating reference frame.
摘要:
A pointing device with independently movable portions is described. In an embodiment, a pointing device comprises a base unit and a satellite portion. The base unit is arranged to be located under a palm of a user's hand and be movable over a supporting surface. The satellite portion is arranged to be located under a digit of the user's hand and be independently movable over the supporting surface relative to the base unit. In embodiments, data from at least one sensing device is read, and movement of both the base unit and the independently movable satellite portion of the pointing device is calculated from the data. The movement of the base unit and the satellite portion is analyzed to detect a user gesture.
摘要:
Embodiments are disclosed herein that are related to controlling the visibility of a portion of memory in a hardware device. For example, one disclosed embodiment provides a hardware device comprising a communications interface configured to connect to a complementary communications interface on a computing device. The hardware device further comprises a portion of memory having a first ID configured to cause the portion of memory to be visible to a user of the computing device to which the hardware device is connected. Further still, the hardware device comprises instructions stored in the portion of memory which are executable by and transferable to the computing device to cause the installation of a computer program related to the hardware device, and to cause the portion of memory to be hidden from the user of the computing device upon transferring of the instructions to the computing device.
摘要:
The invention provides method for treating a tropical cyclone, a tropical storm or a tropical depression. The method includes reducing unloading of cloud parcel water in the tropical cyclone, tropical storm or tropical depression. In a preferred embodiment, unloading of cloud parcel water is accomplished by seeding with cloud condensation nuclei, such as sub-micron ammonium sulfate particles. The treatment is preferably applied to the lower parts of peripheral clouds in the tropical cyclone, tropical storm or tropical depression below the 0 C isotherm level.
摘要:
A printer, scanner device and methods for using same are described herein. A printer device may include a dedicated input that, when actuated, generates and sends a request to a computer for known data or a predetermined print job, e.g., schedule information from a personal information management (PIM) application. A scanner device may include another dedicated input that, when actuated, automatically scans a document fed to the device by the user and sends the scanned image to IM (or other) software on a computer, bypassing the need to manipulate the scanned image using scanner software. The device may be used with printed metapaper, which includes a barcode or other indicia identifying the metapaper and corresponds to a stored template image of the metapaper. When the metapaper is rescanned, the scan can be compared to the stored template information to identify changes and synchronize the changes with the IM software.
摘要:
A pointing device using proximity sensing is described. In an embodiment, a pointing device comprises a movement sensor and a proximity sensor. The movement sensor generates a first data sequence relating to sensed movement of the pointing device relative to a surface. The proximity sensor generates a second data sequence relating to sensed movement relative to the pointing device of one or more objects in proximity to the pointing device. In embodiments, data from the movement sensor of the pointing device is read and the movement of the pointing device relative to the surface is determined. Data from the proximity sensor is also read, and a sequence of sensor images of one or more objects in proximity to the pointing device are generated. The sensor images are analyzed to determine the movement of the one or more objects relative to the pointing device.
摘要:
A method for tracking a moving platform (MP) wherein the MP uses an on-board navigation system (NS). Data provided by the navigation system on board the moving platform (MP) is merged with data obtained using a tracking system that tracks the MP from another location. A typical navigation system on board the moving platforms is an inertial navigation system (INS). State data of one or more MP is sent to a processing facility and state data of one or more electromagnetic tracking (EMT) is collected by one or more processing facility. The collected states data from the sources are processed, using the one or more processing facilities for calculating tracking data are used to direct one or more antennas for MP tracking. The state data from one or more MP's are sent using a communications channel.
摘要:
Multi-touch user interface interaction is described. In an embodiment, an object in a user interface (UI) is manipulated by a cursor and a representation of a plurality of digits of a user. At least one parameter, which comprises the cursor location in the UI, is used to determine that multi-touch input is to be provided to the object. Responsive to this, the relative movement of the digits is analyzed and the object manipulated accordingly. In another embodiment, an object in a UI is manipulated by a representation of a plurality of digits of a user. Movement of each digit by the user moves the corresponding representation in the UI, and the movement velocity of the representation is a non-linear function of the digit's velocity. After determining that multi-touch input is to be provided to the object, the relative movement of the representations is analyzed and the object manipulated accordingly.