摘要:
Timepiece movement driving at least one output wheel set, from a means of generating a time magnitude, or a means of detecting the magnitude of the state of a control member of this movement, or a device for measuring a physical magnitude, the position of this output wheel set being linked to an instantaneous value of this magnitude, displayed on a swiveling display base and including a display wheel set cooperating with this output wheel set, this display wheel set being permanently coupled to this output wheel set and this movement including a supplementary wheel set pivoting synchronously or in an integer pivoting velocity ratio relative to supplementary wheel set.
摘要:
Systems and methods for information and action management including managing and communicating critical and non-critical information relating to certain emergency services events or incidents as well as other applications. More specifically, systems and methods for information and action management including a plurality of mobile interface units that include one or more of a language translation sub-system, an action receipt sub-system, a voice-to-text conversion sub-system, a media management sub-system, a revision management sub-system that restricts the abilities of some users, and a report generation sub-system that creates reports operatively coupled to the language translation sub-system, the action receipt sub-system, the voice-to-text conversion sub-system, the media management sub-system, and the revision management sub-system to auto-populate report fields.
摘要:
The present invention relates to a gas generator, in particular for airbag modules in motor vehicles, comprising two generator stages each of which includes in its pressure housing at least one igniter, at least one propellant charge and at least one combustion chamber. An inner generator stage is arranged at least substantially inside an outer generator stage and the two generator stages are arranged at least partly in a common filter housing together with a common filter unit arranged outside a pressure housing of the outer generator stage.
摘要:
Fault tolerance is provided for a database of hyperlinks distributed across multiple machines, such as a scalable hyperlink store. The fault tolerance enables the distributed database to continue operating, with brief interruptions, even when some of the machines in the cluster have failed. A primary database is provided for normal operation, and a secondary database is provided for operation in the presence of failures.
摘要:
Solar concentrators are disclosed that improve the efficiency of PV cells and systems using them. The solar concentrators may be designed such that they include one or more chromophores that emit light to a PV cell. Various materials and components of the solar concentrators are also described.
摘要:
The present invention provides for the efficient downloading of data set addresses from among a plurality of host computers, using a plurality of web crawlers. Each web crawler identifies URL's in data sets downloaded by that web crawler, and identifies the host computer identifier within each such URL. The host computer identifier for each URL is mapped to the web crawler identifier of one of the web crawlers. If the URL is mapped to the web crawler identifier of a different web crawler, the URL is sent to that web crawler for processing, and otherwise the URL is processed by the web crawler that identified the URL. Each web crawler sends URL's to the other web crawlers for processing, and each web crawler receives URL's from the other web crawlers for processing. In a preferred embodiment, each web crawler processes only the URL's assigned to it, which are the URL's whose host identifier is mapped to the web crawler identifier for that web crawler. Each web crawler filters the URL's assigned to it by comparing them against a database of URL's already known by the web crawler and removing the already known URL's. If a URL is not already known to the web crawler, the data set corresponding to the URL is scheduled for downloading.
摘要:
A web crawler stores fixed length representations of document addresses in a buffer and a disk file, and optionally in a cache. When the web crawler downloads a document from a host computer, it identifies URL's (document addresses) in the downloaded document. Each identified URL is converted into a fixed size numerical representation. The numerical representation may optionally be systematically compared to the contents of a cache containing web sites which are likely to be found during the web crawl, for example previously visited web sites. The numerical representation is then systematically compared to numerical representations in the buffer, which stores numerical representations of recently-identified URL's. If the representation is not found in the buffer, it is stored in the buffer. When the buffer is full, it is ordered and then merged with numerical representations stored, in order, in the disk file. In addition, the document corresponding to each representation not found in the disk file during the merge is scheduled for downloading. The disk file may be a sparse file, indexed to correspond to the numerical representations of the URL's, so that only a relatively small fraction of the disk file must be searched and re-written in order to merge each numerical representation in the buffer.
摘要:
A method and system for scheduling downloads in a web crawler. A web crawler may use multiple threads to download documents from the world wide web. Both threads and queues are identified by numerical ID's. Each thread in the web crawler is assigned to dequeue from a queue until the assigned queue is empty. Each thread enqueues URL's as new URL's are discovered in the course of downloading web pages. In one embodiment, when a thread discovers a new URL, a numerical function is performed on the URL's host component to determine the queue in which to enqueue the new URL. In another embodiment, each queue in a web crawler may be dynamically assigned to a host computer so that URL's enqueued into the same queue all have the same host component. When a queue becomes empty, a new host may be dynamically assigned to it. In both embodiments, when all the threads are dequeuing in parallel from each of the respectively assigned queues, no more than one request to one host computer is made at the same time.
摘要:
A web crawler downloads documents from among a plurality of host computers. The web crawler enqueues document addresses in a data structure called the Frontier. The Frontier generally includes a set of queues, with all document addresses sharing a respective common host component being stored in a respective common one of the queues. Multiple threads substantially concurrently process the document addresses in the queues. The web crawler includes a set of tools for storing an extensible set of data with each document address in the Frontier. These tools enable the applications to which the web crawler passes downloaded documents to store a record of information associated with each download, where each record of information includes an extensible set of name/value pairs specified by the applications. The applications also determine how many records of information to retain for each document, when to delete records of information, and so on. In another aspect of the present invention, the Frontier include a set of parallel “priority queues,” each associated with a distinct priority level. Queue elements for documents to be downloaded are assigned a priority level, and then stored in the corresponding priority queue. Queue elements are then distributed from the priority queues to a set of underlying queues in accordance with their relative priorities. The threads then process the queue elements in the underlying queues.