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Abstract-Objective: To analyze the biomechanical influences on cervical vertebra after the removal of nucleus going with the cervical disc degradation, and to inspect the immediate stability and bone fusion rate with artificial double Cage fusion setting into intervertebral disc.Methods: to establish precisely with CAE method four finite element models as followed: C3-6 normal height disc model, C4-5...
To equivalently test the shielding effect of heavy current transformer (HCT) with shielding coils in laboratory, an eccentric bus-bar testing method has been used to simultaneously simulate the effect of the primary bus-bar and adjacent bus-bar since 1970s. But still there hasn't been an effective way to determine the crucial parameters, especially the eccentric distance, which means the distance...
Cipher index is a well established technology for improving query efficiency. However, the existing index schemes have defect of lowness in query hit rate which leads to Internet crowdedness. It is the key for this problem to reduce the redundant tuples in query results. A synthetical cipher index technology to eliminate redundant tuples is presented through considering numeric data and character...
Cipher index is a well established technology for improving query efficiency. But existing cipher index schemes are aimed at numeric data. Thus, a Character Mapping Cipher Index Scheme applied to ODBs is presented to solve accurate query on cryptogram, which allows various key word and fuzzy queries. This scheme firstly determine all the characters composed the domain of attribute, then assign a unique...
Besides functional dependencies, multivalued dependencies are also important integrity constrains in XML documents. So far, the definitions for multivalued dependencies are oriented to XML documents, rather than schemata. At present, DTD is accepted to be a major schema for a XML document, and most of XML documents are designed to have DTDs. So, it is necessary to propose a definition about multivalued...
In order to miniaturize irradiation accelerator, a new microwave-absorbing structure - collinear load, instead of traditional waveguide load, is adopted to absorb remnant microwave power. Collinear load depends on the film conglutinated on walls of accelerating cavities by flame spraying process and so on. To research on the properties of the alloy thermal-spraying coating, homogenization theory and...
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