As we advance into the new century, computers of the future will require techniques for arithmetic operations that take advantage of the modern technology and yield accurate results. Floating-point arithmetic has been in use for nearly forty years but is plagued with inaccuracies and limitations which necessitates introduction of a new concept in computer arithmetic called composite arithmetic....

Assuming the spin-independence for confining force, we give a covariant quark representation of general composite meson systems with definite Lorentz transformation properties. For benefit of this representation we are able to deduce automatically the transformation rules of composite mesons for general symmetry operations from those of constituent (exciton) quarks. Applying this we investigate...

Operational transformation (OT) is an established optimistic consistency control method in collaborative applications. This approach requires correct transformation functions. In general all OT algorithms only consider two character-based primitive operations and hardly two or three of them support string based two primitive operations, insert and delete. In this paper we propose new algorithms...

Availability of a wide variety of Web services over the Internet offers opportunities of providing new value added services built by composing them out of existing ones. Service composition poses a number of challenges. A composite service can be very complex in structure, containing many temporal and data-flow dependencies between their constituent services. Furthermore, each individual servic...

Systematic errors in spin rotation operations using simple rf pulses place severe limitations on the usefulness of the pulsed magnetic resonance methods in quantum computing applications. In particular, the fidelity of quantum logic operations performed on electron spin qubits falls well below the threshold for the application of quantum algorithms. Using three independent techniques, we demons...

To optimise business processes is a very complex task. The goal is double: to improve productivity and quality. The method, developed in this paper, is composed of 4 steps : the first one is the modelisation step (to describe the business process in a very rigorous way), then a conceptual optimisation (supported by evaluation and simulation tools) to improve the business process structure (to m...

In recent years, databases have started to be used as intelligent repositories for a variety of semantically-richer systems. A consequence of such architectures is that transaction scheduling takes place throughout composite systems consisting of layered subsystems. Such transaction architec-tures have been studied extensively. Existing theory, however , limits the degree of parallelism, and ma...

Executive Summary: Individual quality measures have significant limitations for assessing surgical performance. Despite growing interest in composite measures, methods for empirically combining multiple domains of surgical quality are not well established. This paper outlines the methods for creating a simple composite score based on a combination of surgical mortality and hospital volume. The ...

Object state behavior implies that the eeect of an operation on an object may depend on the states of the object and other objects. It may cause state changes to more than one object. Thus, the combined or composite eeects of the object operations must be analyzed and tested. We show that certain object state behavior errors cannot be detected readily by conventional testing methods. We describ...