A Wire Bow Model of Diamond Wire Sawing with Asymmetric Arc Hypothesis.

Diamond wire sawing is the main processing method for hard and brittle materials, but the unreasonable matching of process parameters will reduce its cutting ability and stability. In this paper, the asymmetric arc hypothesis of a wire bow model is proposed. Based on this hypothesis, an analytical model of the wire bow between the process parameters and the wire bow parameters was established and verified with a single-wire cutting experiment. The model considers the asymmetry of the wire bow in diamond wire sawing. The tension at both ends of the wire bow is called the endpoint tension; by calculating the difference in tension between the two ends, a reference for the cutting stability and a tension range for the selection of the diamond wire were provided. The model was used to calculate the wire bow deflection and the cutting force, providing theoretical guidance for the matching of process parameters. Based on the theoretical analysis of the cutting force, endpoint tension and wire bow deflection, the cutting ability, cutting stability, and the risk of wire cutting were predicted.

[A distributed storage architecture for regional medical image sharing and cooperation based on HDFS].

Given the importance of regional centers for medical image sharing and cooperation is important for resource balancing, healthcare service enhancement and medical expense reduction, building such regional medical image sharing and cooperation centers faces huge challenges. In this paper we analyze the advantages and weakness of two storage architectures, and designed a hybrid storage architecture combining FC SAN and Hadoop HDFS. A HDFS suitable medical image file format, called S-DICOM, and a set of S-DICOM operating middleware, SDFO (S-DICOM File Operator), was developed. The results of performance testing indicated that this hybrid storage architecture is suitable for storing and managing large volume of medical images.

[Research and realization of web-based enterprise management].

Web-based enterprise management (WBEM) represents the major direction of current researches. In this paper, we elaborate on the norms and standards pertaining to WBEM and the major technical principles of its implement.

[Analysis of DICOM and its application in teleradiology].

Digital Imaging Communications in Medicine(DICOM) was brought forward by ACR and NEMA to solve the joining problem of medical equipment. It is a public international standard now. Using DICOM in teleradiology is very important, especially for China. In this paper the authors analyze the contents and specialty of DICOM and make comments on how to use it in teleradiology and picture access and communication system(PACS).