摘要:
A file is striped across multiple filers, file servers or other devices, to create a sparsely striped multi-component file. Each filer stores one sparse component. In particular, each component physically stores only those stripes allocated to that component. The other stripes are represented as holes. Thus, instead of contiguously packing each component's stripes at the block level, each component is a file having the same logical structure. A component of a sparsely striped multi-component file can be easily converted to a mirror by filling in its holes. Similarly, a mirror can be easily converted to one component of a sparsely striped multi-component file by removing or ignoring it unallocated stripes. In either case, the layout or logical of the component does not need to be reconfigured.
摘要:
A system and method for facilitating a consistent point-in-time copy (PITC). A data provider offers access to data by one or more clients. A client issues a PITC request for a set of data to the data provider, or the provider initiates its own request. The data provider instructs one or more clients, particularly clients accessing the set of data, to flush any pending updates involving the files. The clients acknowledge the flush request, flush their data, and notify the data provider when their flushes are complete. Post-consistency updates are deferred (e.g., using a write-aside buffer). If a client fails to acknowledge the flush request or notify of flush completion, the data provider may abort the PITC or continue because the data may not be consistent or consistency may not be assured. If not aborted, the PITC may be marked to indicate that it is incomplete.
摘要:
A method for dirty region logging of a file that includes receiving a request to open the file, determining each of a plurality of component files associated with the file, opening each of the plurality of component files, writing to a region of the at least one of the plurality component files, and updating a dirty region log (DRL) associated with the one of the plurality of component files to reflect the write to the region.
摘要:
The present disclosure relates to biocatalysts and its uses for the efficient preparation of eslicarbazepine, eslicarbazepine acetate, and analogs thereof.
摘要:
Fixed frequency, fixed duration pulse streams are used to control power switches for one or more electrical motors of electrically powered vehicles or hybrid vehicles having one or more electric motors. The advantages of a pulse system are increased power efficiency and system simplicity over analog systems. The capability of system calibration with a single pulse allows the system to be used under any conditions, and real time adaptation to changes in conditions. Such system and methods provide much improved acceleration over other electrical systems, by making the best use of the coefficient of starting or static friction. The systems and methods provide a non slip traction control system, and the use of an off state in the pulse stream is superior to the use of braking systems for the same purpose, which waste power and cause mechanical wear. In addition, related computer program products are described.
摘要:
Disclosed are lighting techniques, including systems, apparatus, and methods, that employ optical transmission of two-dimensional control signals to manipulate lighting elements. The lighting apparatus can include a projector with an IR LED array to wirelessly transmit pixel information onto a target space. The pixel information controls lighting elements within the target space. The two-dimensional control signals can includes subareas corresponding to lighting elements in a control array. The lighting elements can be lights of desired wavelengths including infrared and/or visible wavelengths. LEDs can be used as light sources in exemplary embodiments.
摘要:
The invention encompasses methods and compositions for increasing or decreasing collagen 1A1 expression and/or α-smooth muscle actin expression in lung fibroblasts using SERPINE2 and antagonists of SERPINE2. The invention also encompasses methods and compositions for increasing or decreasing the formation of myofibroblasts. The invention further provides methods and compositions for treatment of lung diseases, such as idiopathic pulmonary fibrosis and chronic obstructive pulmonary disease.
摘要:
The present invention relates to regulation of inflammation. More particularly, the present invention is directed to nucleic acids encoding components of the ubiquitin ligation pathway, e.g., ubiquitin and ubiquitin-like molecules, E1, E2, and E3 proteins and their substrates, which are involved in modulation of the inflammatory process. The invention further relates to methods for identifying and using agents, including small molecule chemical compositions, antibodies, peptides, cyclic peptides, nucleic acids, RNAi, antisense nucleic acids, and ribozymes, that modulate the inflammatory process via modulation of the ubiquitin ligation pathway; as well as to the use of expression profiles and compositions in diagnosis and therapy related to regulation of inflammation and modulation of cytokine signaling involved in inflammation, e.g., for treatment of infection, autoimmune disease and other diseases related to the inflammatory process.
摘要:
A switched preconditioner circuit is provided at the power input end of a light source to effectively drop the voltage of the light source to zero volts whenever the light source is required to be in an OFF state thereby eliminating the problem of unwanted current through the light source. The preconditioner circuit may include a terminal connected to a first power potential, a terminal connected to a power node at the power input end of the light source, and an input to receive a preconditioner control signal to place the preconditioner circuit in one of an ON state and an OFF state. The preconditioner circuit supplies the voltage to the power node in its ON state and effectively eliminates the voltage to the power node in its OFF state. The preconditioner circuit also may include a bleed path connected between the power node and a second or ground potential to shunt all power supplied to the power node when the preconditioner circuit input receives a signal to place the preconditioner circuit in the OFF state.
摘要:
A switched preconditioner circuit is provided at the power input end of a light source to effectively drop the voltage of the light source to zero volts whenever the light source is required to be in an OFF state thereby eliminating the problem of unwanted current through the light source. The preconditioner circuit may include a terminal connected to a first power potential, a terminal connected to a power node at the power input end of the light source, and an input to receive a preconditioner control signal to place the preconditioner circuit in one of an ON state and an OFF state. The preconditioner circuit supplies the voltage to the power node in its ON state and effectively eliminates the voltage to the power node in its OFF state. The preconditioner circuit also may include a bleed path connected between the power node and a second or ground potential to shunt all power supplied to the power node when the preconditioner circuit input receives a signal to place the preconditioner circuit in the OFF state.