Merged indexes are B-trees that contain multiple traditional indexes and interleave their records based on a common sort order. In relational databases, merged indexes implement “master-detail clustering” of related records, e.g., orders and order details. Thus, merged indexes shift de-normalization from the logical level of tables and rows to the physical level of indexes and records, which is...

Previous authors have shown how to build FM-indexes efficiently in external memory, but querying them efficiently remains an open problem. Searching näıvely for a pattern P requires Θ(|P |) random access. In this paper we show how, by storing a few small auxiliary tables, we can access data only in the order in which they appear on disk, which should be faster. An FM-index [4] is a compressed r...

Objective: Erythrocyte sedimentation rate (ESR) is a cheap, fast and readily available test its still being used for many medical conditions in order to help diagnosis evaluation of diseases. In this study, association ESR, cholesterol levels monocyte high density lipoprotein ratio (MHR) with body mass index were inspected healthy population. Material Method: This study an observational, retros...

Abstract Despite the overwhelming evidence that shows persistence of intra-annual variations on demographic events (deaths, birth dates and migration flows), life tables are computed provided an annual basis. This paper develops a new estimator for estimating sub-annual death rates that, considering exact moment occurrence (exact age day) events, concurrently accounts ageing calendar fluctuatio...

several demographic factors may be considered as barriers to osteoporosis prevention like high rate of illiteracy and low socioeconomic status in developing countries, there is lack of studies that assess the relationship between socioeconomic status and osteoporosis. this study was a case-control study and it was conducted in two bone mineral density centers in tehran. case group includes 163 ...

To evaluate the clinical usefulness of measuring transthoracic electrical impedance in patients with pulmonary edema, we studied 27 normal subjects and 33 patients. In normal subjects, impedance increased when body position changed from supine to standing (p less than 0.01) and when lung volume increased from residual volume to total lung capacity (p less than 0.01). Impedance values vari7 omeg...

This report describes the results of a set of experiments conducted with AIMS (Assisted Indexing at Mississippi State), a system that aids human document analysts in the assignment of indexes to physical chemistry journal articles. We defined four different experiments using four different combinations of portions of an article (such as the title and the abstract) to determine which portions of...