The purpose of OLAP (On-Line Analytical Processing) systems is to provide a framework for the analysis of multidimensional data. Many tasks related to analysing multidimensional data and making business decisions are still carried out manually by analysts (e.g. financial analysts, accountants, or business managers). An important and common task in multidimensional analysis is business diagnosis...

There has recently been an increased interest in multidimensional databases (MDB) and On-line Analytical Processing (OLAP) scenarios. OLAP systems impose different requirements than On-line Transactional Processing (OLTP) systems, and therefore, different data models and implementation methods are required for each type of system. There have been several different multidimensional data models p...

Multidimensional models are at the core of data warehouse systems, since they allow decision makers to early define the relevant information and queries that are required to satisfy their information needs. The use of aggregation functions is a cornerstone in the definition of these multidimensional queries. However, current proposals for multidimensional modeling lack the mechanisms to define ...

The suitability of methods from multidimensional systems theory and digital signal processing for the e cient simulation of time and space dependent problems has already been demonstrated. Properly chosen functional transformations for the time and space coordinates turn a partial di erential equation into a transfer function description of a multidimensional continuous system. It serves as the...

This brief addresses the robust asymptotic and BIB0(bounded-input bounded-output) stability of a class of linear shift-variant multidimensional systems. Using a shift-invariant comparisonsystem, necessary and sufficient conditions for the stability of the entirefamily of systems are derived.

We study the limiting behavior of the Cauchy problem for a class of Carleman-like models in the diffusive scaling with data in the spaces L, 1 ≤ p ≤ ∞. We show that, in the limit, the solution of such models converges towards the solution of a nonlinear diffusion equation with initial values determined by the data of the hyperbolic system. When the data belong to L, a condition of conservation ...

antimicrobial peptides (amps) are extensive group of molecules that produced by variety tissues of invertebrate, plants, and animal species which play an important role in their immunity response. amps have different classifications such as; biosynthetic machines, biological sources, biological functions, molecular properties, covalent bonding patterns, three dimensional structures, and molecul...

c onsidering the normative nature of the theories of justice, a distinguished theory of justice could be formulated based on the fundamental teachings of islam. hence a new set of indexes are required to put this new concept to test. through detailed study of the islamic teachings, the research seeks to formulate a comprehensive theory on economic justice (based on various economic rights). in...

This paper focuses on Kalman–Yakubovich–Popov lemma for multidimensional systems described by Roesser model that possibly includes both continuous and discrete dynamics. It is shown that, similarly to the standard 1-D case, this lemma can be studied through the lens of S-procedure. Furthermore, by virtue of this lemma, we will examine robust stability, bounded and positive realness of multidime...

Interest in multidimensional data has been steadily rising in the database community. Storage and subset retrieval of multi-dimensional data is necessary for scienti c, geographic, temporal and business data. Our research has concentrated on developing techniques for e cient loading, retrieval, and update of multi-dimensional data. Current commercial systems (with the exception of one) do not s...