This article describes the successful experiences of National Taiwan University Hospital (NTUH) in moving from IBM Mainframe to connected networking computer systems. We use multi-tier architecture and HL7 standard to implement our new outpatient hospital information system (HIS). The NTUH HIS is a complex environment with several operating systems, databases, and information systems. We adopt service-oriented architecture (SOA) to reduce the complex relations between systems and solve data consistency problems among databases. We also show that the distributed architecture can provide us stable and reasonable system performances. Our main contribution is proving that the distributed environment with HL7 standard and SOA can sustain in a highly demanding environment

We discovered that a (145, 32) binary cyclic code generated by the product of an irreducible polynomial of degree 28 with exponent 145 and the polynomial x/sup 4/+x/sup 3/+x/sup 2/+x+1 has a minimum distance of 44.

In this paper, we address the off-chip driver delta-I or switching noise problem. We propose a novel approach based on switching codes to reduce this noise. These codes are designed to lower the number of drivers which switch in any given system cycle. A formal theoretic framework for switching codes is developed which provides an upper bound on the number of switching drivers as a function of bit width of the data bus and number of redundant switch bits. Switching codes with error detecting and error correcting capabilities are also presented. Switching codes also reduce the average switching activity and power consumed by the off-chip drivers.

A method is presented of constructing symbol error correcting codes that have a minimum symbol distance of 4. The method yields some codes that are more efficient than previously known codes. The application is to designing fault-tolerant semiconductor memories.>

The generation of exhaustive test patterns for VLSI circuits using linear feedback shift registers is described in terms of cyclic codes. Punctured cyclic codes are used to generate exhaustive test patterns of any length. A techniques for the generation of punctured cyclic codes is presented. A technique is also presented to reduce the size of test sets obtained from punctured cyclic codes.>

Byte-oriented error-correcting codes are useful in correcting and detecting errors in a memory system organized in multiple-bit-perchip fashion. This paper presents the construction of new single-byte error-correcting and double-byte error-detecting codes.

Linear feedback shift registers have been proposed to generate test patterns for the self-test of logic networks. The probability of linear dependence among k bit positions of a subset of k bits in a maximum length shift register sequence is an outstanding problem. In this correspondence, we derive a formula for the calculation of the probability.

A better algorithm is presented for the generation of an arbitrary permutation in a model of magnetic bubble memories that have been investigated previously.