摘要:
A parser is provided that parses a Chinese text stream at the character level and builds a syntactic structure of Chinese character sequences. A character-based syntactic parse tree contains word boundaries, part-of-speech tags, and phrasal structure information. Syntactic knowledge constrains the system when it determines word boundaries. A deterministic procedure is used to convert word-based parse trees into character-based trees. Character-level tags are derived from word-level part-of-speech tags and word-boundary information is encoded with a positional tag. Word-level parts-of-speech become a constituent label in character-based trees. A maximum entropy parser is then built and tested.
摘要:
An adjustable segmental distalization appliance for orthodontic treatments features elongated first and second components that cooperatively define a central body of the appliance spanning longitudinally between an anterior end of the first component and a distal end of the second component. First and second terminal heads are respectively carried at the anterior and distal ends and adapted for attachment to first and second teeth of a dental arch. The first and second components are arranged for selective longitudinal displacement relative to one another to adjust an overall length of the central body to adapt to a patient-specific mesial-distal distance between the first and second teeth of the dental arch. In one embodiment, one component is a tubular female component carrying a ratchet pawl, and the other component is an insertable male component with cooperating ratchet teeth for incremental extension of the central body.
摘要:
A guidance, navigation, and control method and system for an underground mining vehicle wherein an operator directly or indirectly guides the vehicle along a route as vehicle-mounted sensors including odometric sensors and rangefinders log motion data to a file which data is processed into a route profile including a vehicle path, a sequence of submaps along the path, and a profile of desired speed as a function of distance along the path. Thereafter the vehicle automatically repeats the route as represented by the route profile without an operator using the sensors and the maps to determine vehicle location.
摘要:
An article comprising two chemically grafted polymer layers comprising a hydrogel layer and an end-functionalized polyurethane layer. The invention also includes methods of making and using the article.
摘要:
The present invention relates to a process comprising the steps of reacting in the presence of a hydrosilylation catalyst, a first reaction mixture comprising a free radical reactive compound and a silicon containing compound to form a silicon substituted glyceryl (meth)acrylate.
摘要:
The present invention includes compound of formula (I), or a derivative thereof wherein Y is CH or N; R1 is unsubstituted or substituted alkyl, unsubstituted or substituted cycloalkyl, unsubstituted or substituted alkenyl, unsubstituted or substituted cycloalkenyl, unsubstituted or substituted aryl, aralkyl wherein the aryl and the alkyl moieties may each independently be unsubstituted or substituted, aralkenyl wherein the aryl, and alkenyl moieties may each independently be unsubstituted or substituted, unsubstituted or substituted heterocyclyl, or heterocyclylalkyl wherein the heterocyclcyl and the alkyl moieties may each inedepently be unsubstituted or substituted; and R2 is unsubstituted aryl or unsubstituted or substituted or substituted heteroaryl. Additionally the present invention inlcudes a process for preparing such a compound, a pharmaceutical composition containing such a compound, and the use of such a compound in medicine.
摘要翻译:本发明包括式(I)化合物或其衍生物,其中Y为CH或N; R 1是未取代或取代的烷基,未取代或取代的环烷基,未取代或取代的烯基,未取代或取代的环烯基,未取代或取代的芳基,芳烷基,其中芳基和烷基部分各自独立地为未取代或取代的 芳基和烯基部分可以各自独立地是未取代的或取代的,未取代的或取代的杂环基或杂环基烷基,其中杂环基和烷基部分各自是未取代的或取代的; R 2是未取代的芳基或未取代或取代或取代的杂芳基。 另外本发明涉及制备这种化合物的方法,含有这种化合物的药物组合物,以及这种化合物在医药中的用途。
摘要:
The invention is a toneable conduit that can transmit a signal and be readily detected by toning equipment. The conduit can be coupled with other conduit to provide extended lengths of conduit. The toneable conduit includes an elongate polymeric tube having a wall with an interior surface, an exterior surface, and a predetermined wall thickness. A channel preferably extends longitudinally within the wall of the elongate polymeric tube; a stabilizing rib extends longitudinally along the interior surface of the wall of the elongate polymeric tube and is located radially inward from the channel. A continuous wire is coincident with the channel in the elongate polymeric tube and preferably coated with a composition that prevents it from adhering to the polymer melt that forms the elongate polymeric tube. The present invention includes methods of making the toneable conduit and methods of coupling a first toneable conduit with a second toneable conduit.
摘要:
A network analyzer, having a demultiplexer that demultiplexes an input signal received by the network analyzer, and a determination unit determining a frame mapping of the input signal, and automatically configuring the demultiplexer in accordance with the determined frame mapping.
摘要:
A method for calibrating a preferred disposition for a moveable first mirror of an optical switch core of a photonic crossconnect device relative to a second mirror thereof, the method comprising the steps of determining approximate geometric coordinates of the first mirror relative to the second mirror, effecting a laser light crossconnection between the first and second mirrors to produce data from which to provide first order corrections to refine the geometric coordinates, and effecting a further laser light crossconnection between the first mirror and a third mirror, to produce data from which to provide second order corrections to further refine the geometric coordinates, whereby to calibrate the first mirror such that upon initiation of a laser light crossconnection involving the first mirror, a switching element detects deviation of the first mirror from the preferred disposition thereof and effects corrective changes.
摘要:
Polymers whose surfaces are modified by endgroups that include amphipathic surface-modifying moieties. An amphipathic endgroup of a polymer molecule is an endgroup that contains at least two moieties of significantly differing composition, such that the amphipathic endgroup spontaneously rearranges its positioning in a polymer body to position the moiety on the surface of the body, depending upon the composition of the medium with which the body is in contact, when that re-positioning causes a reduction in interfacial energy. An example of an amphipathic surface-modifying endgroup is one that has both a hydrophobic moiety and a hydrophilic moiety in a single endgroup. For instance, a hydrophilic poly(ethylene oxide) terminated with a hydrophilic hydroxyl group is not surface active in air when the surface-modifying endgroup is bonded to a more hydrophobic base polymer. If the hydroxyl group on the oligomeric poly(ethylene oxide) is replaced by a hydrophobic methoxy ether terminus, the poly(ethylene oxide) becomes surface active in air, and allows the poly(ethylene oxide) groups to crystallize in the air-facing surface. In this example, immersion in water destroys the crystallinity as the poly(ethylene oxide) sorbs water and the hydrophobic methoxy group retreats below the surface of the polymer. Also disclosed are methods and articles of manufacture that make use of these polymers.