Abstract: A memory address assignment method and a virtual machine that runs on a host machine. The host machine includes a physical memory area with power failure protection, the virtual machine includes a virtual memory area with power failure protection. The method includes determining that a virtual memory address in which a page fault occurs in the virtual machine belongs to the virtual memory area with power failure protection, and assigning a physical memory address of the host machine from the physical memory area with power failure protection to the virtual memory address.

Abstract: A method and a system for operating a wind turbine (10) during a fault. The system includes a pitch motor for rotating each rotor blade (18), second pitch sensors (72) for determining when the rotor blade (18) is rotated to a set point, and a backup pitch controller (80). After a fault is detected, the method determines whether the wind speed in the vicinity of the wind turbine (10) is less than or greater than or equal to a maximum rated velocity of the wind turbine (10). The backup pitch controller (80) then rotates the rotor blades (18) to a specific set point based on the determination.

Abstract: An allocation instruction is received that includes a target data operand and a storage medium operand indicating a storage medium for storing the target data. A data dependency is identified that specifies metadata that includes access control information specifying which users have permission to perform a write operation to the file that includes the target data. In response to determining that the allocation instruction allocates the target data from a first storage medium to a second storage medium having a faster data IO rate, the allocation instruction is modified to also allocate the metadata specified in the data dependency to the second storage medium. In another aspect, the allocation instruction is modified to also allocate the metadata identified in the data dependencies to one or more storage mediums with data IO rates that are at least as fast as the second storage medium.

Abstract: An allocation instruction is received that includes a target data operand and a storage medium operand indicating a storage medium for storing the target data. A data dependency is identified that specifies metadata that includes access control information specifying which users have permission to perform a write operation to the file that includes the target data. In response to determining that the allocation instruction allocates the target data from a first storage medium to a second storage medium having a faster data IO rate, the allocation instruction is modified to also allocate the metadata specified in the data dependency to the second storage medium. In another aspect, the allocation instruction is modified to also allocate the metadata identified in the data dependencies to one or more storage mediums with data IO rates that are at least as fast as the second storage medium.

Abstract: An allocation instruction is received that includes a target data operand and a storage medium operand indicating a storage medium for storing the target data. A data dependency is identified that specifies metadata that includes access control information specifying which users have permission to perform a write operation to the file that includes the target data. In response to determining that the allocation instruction allocates the target data from a first storage medium to a second storage medium having a faster data IO rate, the allocation instruction is modified to also allocate the metadata specified in the data dependency to the second storage medium. In another aspect, the allocation instruction is modified to also allocate the metadata identified in the data dependencies to one or more storage mediums with data IO rates that are at least as fast as the second storage medium.

Abstract: An allocation instruction is received that includes a target data operand and a storage medium operand indicating a storage medium for storing the target data. A data dependency is identified that specifies peripheral data on which the target data depends. In response to determining that the allocation instruction will cause the target data and the peripheral data to locate to different storage mediums having different data IO rates, the execution of the allocation instruction is prevented. In another embodiment, in response to determining that the allocation instruction allocates the target data from a first storage medium to a second storage medium having a faster data IO rate, the allocation instruction is modified to also allocate the peripheral data specified in the data dependency to the second storage medium.

Abstract: The invention provides method for imaging the activity of enzymes or bioactive molecules in cells using fluorescent probes with aggregation-induced emission properties and excited-state intramolecular proton transfer properties. The fluorescent probes prepared according to the invention are those of formula (I), wherein W, X, Y, Z have the meaning as described in the description, R is a reactive group that can interact with enzymes and other bioactive molecules, Linker is a single bond or a combination of chemical bonds linking the targeting group T to the probe molecule, and T represents a targeting group that has an ability to interact with an organelle.

Abstract: An allocation instruction is received that includes a target data operand and a storage medium operand indicating a storage medium for storing the target data. A data dependency is identified that specifies peripheral data on which the target data depends. In response to determining that the allocation instruction will cause the target data and the peripheral data to locate to different storage mediums having different data IO rates, the execution of the allocation instruction is prevented. In another embodiment, in response to determining that the allocation instruction allocates the target data from a first storage medium to a second storage medium having a faster data IO rate, the allocation instruction is modified to also allocate the peripheral data specified in the data dependency to the second storage medium.

Abstract: A wind turbine blade pitch control system includes a blade pitch drive mechanism coupled to a wind turbine blade and an electric power source coupled to the blade pitch drive mechanism. The system also includes switch devices coupled to portions of the electric power source, and the switch devices are coupled to the blade pitch drive mechanism. The system further includes a controller coupled to the blade pitch drive mechanism and the switch devices. The controller is configured to store a plurality of operational measurements of the blade pitch drive mechanism and the switch devices. The controller is programmed to change an angular rate of change of a pitch angle of the wind turbine blade by opening and closing the switch devices in a predetermined sequence.

Abstract: The present disclosure provides a page browsing method and a browser, the page browsing method comprising: loading page data; displaying a page in the browsing area of a browser interface; monitoring user events of the browser interface; and setting the address bar to hidden upon identifying a first action message at the time when the user is browsing the page content. The present disclosure effectively increases user's browsing area and maximizes the browsing area on the interface through automatic control of show/hide of the browser address bar without affecting user's usage, thereby enhancing user experience.

Abstract: A method and a system for operating a wind turbine (10) during a fault. The system includes a pitch motor for rotating each rotor blade (18), second pitch sensors (72) for determining when the rotor blade (18) is rotated to a set point, and a backup pitch controller (80). After a fault is detected, the method determines whether the wind speed in the vicinity of the wind turbine (10) is less than or greater than or equal to a maximum rated velocity of the wind turbine (10). The backup pitch controller (80) then rotates the rotor blades (18) to a specific set point based on the determination.

Abstract: A wind turbine blade (112) is situated on a wind turbine (100). The wind turbine blade (112) includes a tip portion (122) and an obstruction removal system (200). The tip 212 portion (122) comprises an end wall which defines an opening. The obstruction removal system (200) is positioned with respect to the blade (112) so as to remove obstructions from the opening.

Abstract: Embodiments of the invention can provide systems, methods, and apparatus for monitoring and controlling a wind driven machine. According to one embodiment, a system including a wind driven machine with at least one component can be provided. The system can also include at least one data collection module for collecting operating data from the at least one component and for providing the operating data to at least one data processing module. The operating data can comprise an electrical characteristic associated with the at least one component. The data processing module can receive the operating data, determine whether the operating data indicates the component is operating in an alert condition and can provide an indicator when the component is operating in an alert condition.

Abstract: A seal arrangement for sealing a bearing comprising a first component and a second component which are rotatably movable with respect to each other is provided. The seal arrangement includes brush seal having an annular brush body carried by the first component and a bundle of resiliently bendable bristles. The brush seal is adapted to maintain a sealing condition when the first and second component are moved relative to each other in a non-rotational manner. Further, a brush seal and a wind turbine having a brush seal are provided.

Abstract: An azimuth angle measurement system includes a rotatable ring, a wire coupled at a first end to the ring, a length measurement device configured to measure a length of a portion of the wire that extends from the ring, and a control system configured to determine an azimuth angle based on the length of the portion of the wire extending from the ring.

Abstract: A control method and associated component configuration provide cooling for components within a wind turbine structure, such as a tower or nacelle. A recirculating airstream of internal air is established in the structure. For a defined set of operational conditions of the wind turbine that affect a required cooling capacity within the structure, the recirculating airstream is controllably augmented with external air to increase cooling capacity of the recirculating airstream. The amount of external air introduced into the structure is balanced with the amount of relatively hotter internal air within the structure so as to achieve a desired balance of temperature and relative humidity within the structure.

Abstract: Methods and apparatus for continuing wind turbine operation when normal wind turbine motor control is unavailable due to overheating of one or more wind turbine control motors. Technical effects of the present invention include providing an effective control strategy continuing operation during over-heating of a wind turbine control motor, such as a pitch control motor and a yaw control motor.

Abstract: Methods and apparatus for continuing wind turbine operation when normal wind turbine motor control is unavailable due to overheating of one or more wind turbine control motors. Technical effects of the present invention include providing an effective control strategy continuing operation during over-heating of a wind turbine control motor, such as a pitch control motor and a yaw control motor.

Abstract: Embodiments of the invention can provide systems, methods, and apparatus for monitoring and controlling a wind driven machine. According to one embodiment, a system including a wind driven machine with at least one component can be provided. The system can also include at least one data collection module for collecting operating data from the at least one component and for providing the operating data to at least one data processing module. The operating data can comprise an electrical characteristic associated with the at least one component. The data processing module can receive the operating data, determine whether the operating data indicates the component is operating in an alert condition and can provide an indicator when the component is operating in an alert condition.

Abstract: A seal arrangement for sealing a bearing comprising a first component and a second component which are rotatably movable with respect to each other is provided. The seal arrangement includes brush seal having an annular brush body carried by the first component and a bundle of resiliently bendable bristles. The brush seal is adapted to maintain a sealing condition when the first and second component are moved relative to each other in a non-rotational manner. Further, a brush seal and a wind turbine having a brush seal are provided.