摘要:
A method, system and computer program product for inferring topic evolution and emergence in a set of documents. In one embodiment, the method comprises forming a group of matrices using text in the documents, and analyzing these matrices to identify evolving topics and emerging topics. The matrices includes a matrix X identifying a multitude of words in each of the documents, a matrix W identifying a multitude of topics in each of the documents, and a matrix H identifying a multitude of words for each of the multitude of topics. These matrices are analyzed to identify the evolving and emerging topics. In an embodiment, two forms of temporal regularizers are used to help identify the evolving and emerging topics. In another embodiment, a two stage approach involving detection and clustering is used to help identify the evolving and emerging topics.
摘要:
A system includes a data storage device, a controller coupled with the data storage device, a backup device coupled with the controller for backing up a modified portion of data and volatile memory metadata stored by the controller, and a backup power source for powering the controller. The controller includes a pre-specified region of volatile memory for storing backup device metadata for managing a modified portion of data, the metadata comprising one or more intents corresponding to modified data written back to the data storage device. The controller is configured to invalidate the one or more intents. During a restore operation, the controller is configured to store the backup device metadata in the pre-specified region of volatile memory when a charge on the backup power source is at least a minimum threshold charge and to store the updated backup device metadata in the backup device during an interruption of power.
摘要:
A metal and oxygen material such as a transparent electrically conductive oxide material is electro deposited onto a substrate in a solution deposition process. Process parameters are controlled so as to result in the deposition of a high quality layer of material which is suitable for use in a back reflector structure of a high efficiency photovoltaic device The deposition may be carried out in conjunction with a masking member which operates to restrict the deposition of the metal and oxygen material to specific portions of the substrate. In particular instances the deposition may be implemented in a continuous, roll-to-roll process. Further disclosed are semiconductor devices and components of semiconductor devices made by the present process, as well as apparatus for carrying out the process.
摘要:
An ultra lightweight semiconductor device such as a photovoltaic device is fabricated on a non-etchable barrier layer which is disposed upon an etchable substrate. The device is contacted with an appropriate etchant for a period of time sufficient to remove at least a portion of the thickness of the substrate. The barrier layer prevents damage to the photovoltaic material during the etching process. Photovoltaic devices fabricated by this method have specific power levels in excess of 300 w/kg.
摘要:
A method and controller device for upgrading firmware in a virtualized storage environment having a virtual machine manager, guest virtual machines and a storage device. The method includes downloading a new firmware solution bundle to a first logical area of the storage device, and installing the new firmware containing the virtual machine manager and guest virtual machines. The installation includes moving the solution bundle to a scratch area carved out of a P-cache area in the storage device, extracting the new firmware, copying the new firmware to the first logical area, marking the first logical area as the Active area, and marking the second logical area as the Staging area. The method also includes rebooting the virtualized storage environment with the installed new firmware, committing to the new firmware if the installation is successful, and rolling back the firmware version from the new firmware to the current firmware if the installation is not successful.
摘要:
A system includes a data storage device, a controller coupled with the data storage device, a backup device coupled with the controller for backing up a modified portion of data and volatile memory metadata stored by the controller, and a backup power source for powering the controller. The controller includes a pre-specified region of volatile memory for storing backup device metadata for managing a modified portion of data, the metadata comprising one or more intents corresponding to modified data written back to the data storage device. The controller is configured to invalidate the one or more intents. During a restore operation, the controller is configured to store the backup device metadata in the pre-specified region of volatile memory when a charge on the backup power source is at least a minimum threshold charge and to store the updated backup device metadata in the backup device during an interruption of power.
摘要:
A metal and oxygen material such as a transparent electrically conductive oxide material is electro deposited onto a substrate in a solution deposition process. Process parameters are controlled so as to result in the deposition of a high quality layer of material which is suitable for use in a back reflector structure of a high efficiency photovoltaic device. The deposition may be carried out in conjunction with a masking member which operates to restrict the deposition of the metal and oxygen material to specific portions of the substrate. In particular instances the deposition may be implemented in a continuous, roll-to-roll process. Further disclosed are semiconductor devices and components of semiconductor devices made by the present process, as well as apparatus for carrying out the process.
摘要:
A metal and oxygen material such as a transparent electrically conductive oxide material is electro deposited onto a substrate in a solution deposition process. Process parameters are controlled so as to result in the deposition of a high quality layer of material which is suitable for use in a back reflector structure of a high efficiency photovoltaic device. The deposition may be carried out in conjunction with a masking member which operates to restrict the deposition of the metal and oxygen material to specific portions of the substrate. In particular instances the deposition may be implemented in a continuous, roll-to-roll process. Further disclosed are semiconductor devices and components of semiconductor devices made by the present process, as well as apparatus for carrying out the process.
摘要:
A system and method is disclosed for root cause analysis and early warning of inventory problems. The system includes a server coupled with a database and configured to access the data describing inventory policy parameters of a supply chain network, the data describing one or more demand patterns and one or more replenishment patterns of the supply chain network, and the data describing the supply chain network comprising a plurality of entities, each entity configured to supply one or more items to satisfy a demand. The server is further configured to optimize the inventory policy parameters for each of the one or more items according to the one or more demand patterns and the one or more replenishment patterns and store the optimized inventory policy parameters in the database for each of the one or more items.
摘要:
An ultra lightweight semiconductor device such as a photovoltaic device is fabricated on a non-etchable barrier layer which is disposed upon an etchable substrate. The device is contacted with an appropriate etchant for a period of time sufficient to remove at least a portion of the thickness of the substrate. The barrier layer prevents damage to the photovoltaic material during the etching process. Photovoltaic devices fabricated by this method have specific power levels in excess of 300 w/kg.