One of the key tasks of a database administrator is to optimize the set of materialized indices with respect to the current workload. To aid administrators in this challenging task, commercial DBMSs provide advisors that recommend a set of indices based on a sample workload. It is left for the administrator to decide which of the recommended indices to materialize and when. This decision requir...

Peer-to-Peer systems have become a focus of distributed computing these years. Document discovery is a key problem in this field. In this paper, abstract indices are proposed for content-based information retrieval in Peer-to-Peer systems, especially for multimedia documents. Abstract information is extracted from the shared documents of each peer, then the similar documents on other peers can ...

Indexing can be viewed is the process of segmenting a large information with the indices acting as descriptors for the subspaces. In the case of information retrieval systems, the indices are used to retrieve documents based on a user query, whereas in the case of knowledge navigation systems, the indices circumscribe browsable spaces of documents. In this paper, I take the position that tradit...

Supporting efficient access to XML data using XPath [3] continues to be an important research problem [6, 12]. XPath queries are used to specify nodelabeled trees which match portions of the hierarchical XML data. In XPath query evaluation, indices similar to those used in relational database systems – namely, value indices on tags and text values – are first used, together with structural join...

Pupil dilation and blinks provide complementary, mutually exclusive indices of information processing. Though each index is associated with cognitive load, the occurrence of a blink precludes the measurement of pupil diameter. These indices have generally been assessed in independent literatures. We examine the extent to which these measures are related on two cognitive tasks using a novel meth...

Please cite this paper as: Behdad A. Evaluation and Importance of Trauma. Arch Trauma Res.2012; 1(2):49-50. DOI: 10.5812/atr.7245 Implication for health policy/practice/research/medical education: The role of trauma in the modern society has a vital importance and significance role that resorting to any facilities and strategies to handle the dilemma seems worthful for all researchers in this s...

A new approach for a global sensitivity analysis of nonlinear mathematical models is presented using the information provided by two complementing variance-based methods. As a first step, the model is evaluated applying a shared sampling strategy for both methods based on Sobol’s quasi-random sequences. Then, total sensitivity indices are estimated in a second step using the Sobol’-Saltelli met...

There is one method, called the Block Gradient Method here, whereby to detect image movements from an image sequence. This method has an advantage over the computing costs in a movement vector. However, this method has a general problem, in that the reliability of the detected movements varies with varying conditions, such as the image texture. Therefore, it is important to obtain some indices ...

[1] Validation of gridded satellite observations and climate model simulations are fundamental to future improvements in retrieval algorithms and model developments. Among the metrics, the contingency table, which includes a number of categorical indices, is extensively used in evaluation studies. While the categorical indices offer invaluable information, they do not provide any insight into t...

Two new indices are presented which reflect quantitatively the changes to be expected in an ecological community under stress, as previously described by R.M. Warwick. The indices summarize information which he presented graphically, and permit analyses of trends and inferential tests. We suggest that these indices should be tested with a wide variety of ecological timeseries data in order to e...