The DDF (Distributed Data Facility) environment provides the capability for remote access to large DB2 databases by many remote application servers. While much of the application activity occurs outside the zseries complex, there are many measurements that can be used to understand not only the internal but also the remote activity that drives performance and capacity. This paper will explore t...

We describe an approach to evaluating algorithmic and human performance in directing UAV-based surveillance. Its key elements are a decision-theoretic framework for measuring the utility of a surveillance schedule and an evaluation testbed consisting of 243 scenarios covering a welldefined space of possible missions. We apply this approach to two example UAV-based surveillance methods, an algor...

The 4.2 Berkeley Software Distribution of UNIX® for the VAX‡ had several problems that could severely affect the overall performance of the system. These problems were identified with kernel profiling and system tracing during day to day use. Once potential problem areas had been identified benchmark programs were devised to highlight the bottlenecks. These benchmarks verified that the problems...

This paper provides a new metric, knowledge management performance index (KMPI), for assessing the performance of a firm in its knowledge management (KM) at a point in time. Firms are assumed to have always been oriented toward accumulating and applying knowledge to create economic value and competitive advantage. We therefore suggest the need for a KMPI which we have defined as a logistic func...

A horizontal fragment of a database class in an object-oriented database system contains subsets of its instance objects (or class extents) reeecting the way applications are accessing database objects. Allocating well-deened fragments of classes to distributed sites has the advantage of minimizing transmission costs of data to remote sites as well as minimizing retrieval time of data needed lo...

One key to improving high performance computing (HPC) productivity is to find better ways to measure it. We define productivity in terms of mission goals, i.e. greater productivity means that more science is accomplished with less cost and effort. Traditional software productivity metrics and computing benchmarks have proven inadequate for assessing or predicting such end-to-end productivity. I...

NT offers a wealth of measurement data regarding system, interface and application performance. In fact, there is so much information that the greatest danger may well be data overload. This presentation will offer a set of key metrics that will quickly supply an overview of system performance to the analyst. These can be used to quickly assess the status of an NT system, identify bottlenecks a...

BACKGROUND Symmetry is one of the criteria of achieving a good aesthetic result. Realising this can be difficult. Attempts have been made to try and measure this symmetry using advanced and complex methods.1 For most surgeons on a daily basis the only practical way to measure symmetry is to use a simple measuring tool such as a measuring tape. However, this method is not very reliable as it dep...