Model updating concerns the modification of an existing but inaccurate model with measured data. For models characterized by quadratic pencils, the measured data usually involve incomplete knowledge of natural frequencies, mode shapes, or other spectral information. In conducting the updating, it is often desirable to match only the part of observed data without tampering with the other part of...

This paper suggests a decentralized adaptive sliding mode formation procedure for affine nonlinear multi-quadrotor under a fixed directed topology wherever the followers are conquered by dynamical uncertainties. Compared with the previous studies which primarily concentrated on linear single-input single-output (SISO) agents or nonlinear agents with constant control gain, the proposed method is...

in this research, the viewpoint of mīzā mahdī iṣfahānī, as the founder of tafkīk school (separatism), concerning the most important epistemological issues like the quiddity of cognition (or episteme), types of cognition, truth, and justification of knowledge (ma‘rifa) are studied. given the fact that epistemology has not been regarded as an independent science in the muslim world, but the musli...

Most current work on discovery of association rules assumes that the database from which the rules are determined is static. The mining operation is performed just once and therefore there is no need of knowledge management integration techniques. However, there are several domains where the database is updated on a regular basis. In these dynamic databases, it is hard to maintain the discovere...

rangelands are known as one of the main income resources for their exploiters.in the recent century, management of iran rangeland has undergone vast transformationsbecause of vulnerable socio-economic conditions of pastoralists. a study was done toprovide a clear picture of the status and utilization of aq qala rangelands via assessinginternal and external environmental factors affecting the ut...

An important problem that arises when updating a knowledge base is related to integrity constraints maintenance. That is, given a consistent knowledge base and an update request, to obtain all possible ways of updating the base facts such that the request is satisfied and consistency is maintained. In this paper we present a new method for providing automatic support in these situations. Our me...

Knowledge use in organizations is a key focus of knowledge management system. This is because organizations achieve competitive advantage by using knowledge assets. However, despite perceived benefits of knowledge assets, organizations are finding it difficult to link their most valuable assets with the needs of employees to support tasks related programs. To solve this problem, research has su...

Recently the field of theory update has seen some improvement, in what concerns model updating, by allowing updates to be specified by so-called revision programs. The updating of theory models is governed by their update rules and also by inertia applied to those literals not directly affected by the update program. Though this is important, it remains necessary to tackle as well the updating ...