The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Due to the characteristics of lightness, smallness, thinness and softness, it is difficult to realize automatic production of miniature parts by robot systems in electronic industry. In this paper, a fine-manipulation tweezer with embedded ultrasonic motor for assembly and gripping miniature parts is proposed. First, an optimized design method to improve the motor thrust is presented. By analyzing...
A new method based on the predicting of phase difference (PPM) is developed to extract phase slowness from multi-channel dispersive waves. This method is verified by synthesized multipole array waveforms and field data measured by a multipole array acoustic logging tool (MPAL). The results show that this method is fast and stable for dispersion analysis.
Full-automatic semantic analysis is at all times one of the main targets in natural language processing. Many researchers made great efforts in semantic analyzing or tagging to reach such target. There have been some good results in shallow semantic analysis such as recognizing syntax phrase chunks and labeling semantic roles. This paper introduces the supplementary semantic chunk (in short, fK) in...
As an expression method of proper noun, the personal name abbreviation is used massively in Chinese. The personal name abbreviation usually does not enter the word storehouse, and it is difficult to be recognized in natural language processing and often is analyzed for certain individual characters by mistake. The article is instructed by the SGU frame in concept element symbolism, and elaborates...
Sentence group is mapped into contextual element, one of the four layers of linguistic conceptual space in the theory of hierarchical network of concepts (HNC). The contextual element is composed of three parts: domain, situation and background. The domain is extracted by merging sentences with the same or similar domain conceptual symbol, which comes from the symbols of conceptual primitives, the...
It is a very difficult problem in natural language processing to resolve the ambiguity of personal pronouns anaphora in a sentence or paragraph by computer according to semantic expression. Firstly, this paper focuses on finding out the personal names based on the maximal entropy model. Secondly, it categorizes Semantic Chunks and Sentence Category(SCs) based on the HNC theory. Thirdly, we chose 40...
The sentence format (SF) indicates the relationship among the components of the sentences, and it also can provide guiding knowledge for computer sentence processing. The sentence format is used to indicate the appearance order of the main semantics block in the sentence. The method manifested the language expression custom of the language and the synthesis utilization of each grammar category. The...
This paper introduced the domain of a sentence group. A domain is described with conceptual symbols in linguistic conceptual space. The domain of a sentence group can be extracted from words and their roles in the semantic structure of a sentence. Four kinds of relationships between the conceptual symbols of domains were discussed. These relationships are also helpful to confirm the domain of a sentence...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.