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This paper describes the techniques we applied for the two TREC 2006 tracks, i.e., Genomics and Enterprise track. For the Genomics Track, we used a Rocchio relevance feedback method to expand the terms and then performed passage retrieval by building dual index and using half overlapped windows passages. Several approaches to merge the results and rerank(More)
Since the advent of the robots, they are widely applied in many areas of industry all over the world. With the advancement of the robot, many new research theories and technologies are developed on it. The single one impacted much more quickly and significantly is the application of computer offline simulation technology nowadays. Based on some relevant(More)
Since the advent of the robots, they are widely applied in many areas of industry all over the world. With the advancement of the robot, many new research theories and technologies are developed on it. The single one impacted much more quickly and significantly is the application of computer offline simulation technology nowadays. Based on some relevant(More)
Cryogel beads, fabricated by the microchannel liquid-flow focusing and cryo-polymerization method, have micron-scale supermacropores allowing the passage of crude feedstocks, and could be of interest as chromatographic adsorbents in bioseparation applications. In this work, we provide a rapid freezing and continuous formation method for cryogel beads by(More)
  • Linhong Xu
  • 2010
Optimized machinability data is usually obtained from a skilled machine tool operator’s experience and intuition. An attempt has been made in this study to develop a fuzzy logic expert system for machinability data selection to assist part programmers and process planners in their decision making processes for cutting tool and cutting parameters.(More)
For those existing physical object without any computer-aided design models or drawings, the reverse engineering is a good choice for reconstructing the related vectored 3D digital model and then rebuild the object. The general process of reverse engineering was introduced and briefly described in this work. Based on the point cloud captured from the(More)
The forming process of a warm extrusion punch of drilling bit shell is simulated by using contact analysis modules of ANSYS. Different friction coefficient and turning fillet radius is employed during its axis-symmetrical analysis. The results reveal the equivalent stress distribution and dangerous working regions on the punch under working condition.(More)
The operational performance of gears regarding smoothness, quietness, wear and life span is largely affected by how gear and pinion teeth make contact. And the geometric characteristic of teeth profile plays a very important role in influencing contact condition during gear transmission. For a nominal involute gear pairs, load concentration on the(More)
Virtual Manufacturing is the use of a desktop virtual reality system for the computer-aided design of components and processes for manufacture. Virtual reality is a computer technology that enables users to view or 'immerse' themselves in an alternate world. Immersion and man-machine interaction is the core of VR technology. VR technology has obvious(More)