A mediator join index (MJI) is proposed to speed up Nway inter-database joins by reducing the amount of data transfer during evaluation. A family of algorithms, the Query Scrubbing Algorithms (QSA), are developed to maintainMJI and to evaluate queries usingMJI. QSA algorithms use query scrubbing to cope with update and query anomalies related to materialized views in the mediator context. Compa...

1. Introduction A process capability index is a numerical summary that compares the behavior of a product or process characteristic to engineering specifications. These measures are also often called capability or performance indices or ratios; we use capability index as the generic term. A capability index relates the voice of the customer (specification limits) to the voice of the process. A ...

Hemispheric ozone variability indices derived from satellite observations and as diagnostics for coupled chemistry-climate models T. Erbertseder, V. Eyring, M. Bittner, M. Dameris, and V. Grewe German Remote Sensing Data Center, DFD, German Aerospace Center, DLR, Germany Institute for Atmospheric Physics, German Aerospace Center, DLR, Germany Received: 4 April 2006 – Accepted: 24 May 2006 – Pub...

Metaphase chromosomes from leukocyte cultures of Indian subjects have been measured. Mean length index and arm ratios compare well with figures from other parts of the world-except chromosome No. 2 which in a large percentage of cases is longer than Ch: No. 1. The fallacies involved in measuring and basing correlations on these are discussed. Introduction The characteristics of the normal human...

It is well known that positive linear systems have differences in the concepts and characterizations of the structural properties of reachability and controllability. In this paper, the reachability indices of a positive system are defined and consequently they are studied. For that, a canonical form of the reachability indices is given by positive similarity. From that canonical form, it is es...

Using separate indices for each element and merging their results has proven to be a feasible way of performing XML element retrieval; however, there has been little work on evaluating how the main method parameters affect the results. We study the effect of using different weighting models for computing rankings at the single index level and using different merging techniques for combining suc...

Topological indices have important role in theoretical chemistry for QSPR researches. Among the all topological indices the Randić and the Zagreb indices have been used more considerably than any other topological indices in chemical and mathematical literature. Most of the topological indices as in the Randić and the Zagreb indices are based on the degrees of the vertices of a connected graph....

Using the standard equation for the slowdown of a neutron star, we derive a formula for the braking index via integration rather than the conventional differentiation. The new formula negates the need to measure the second time derivative of the rotation frequency, .. ν. We show that the method gives similar braking indices for PSR B1509– 58 and the Crab pulsar to those already in the literatur...

Loosely speaking a robust projection index is one that prefers projections involving true clusters over projections consisting of a cluster and an outlier. We introduce a mathematical definition of one-dimensional index robustness and describe a numerical experiment to measure it. We design five new indices based on measuring divergence from Student’s t distribution which are intended to be esp...

Monitoring of tissue perfusion is an essential step in the management of acute circulatory failure. The presence of cellular dysfunction has been a basic component of shock definition even in the absence of hypotension. Monitoring of tissue perfusion includes biomarkers of global tissue perfusion and measures for assessment of perfusion in non-vital organs. The presence of poor tissue perfusion...