We conduct convergence analysis on some classical stationary iterative methods for solving the two dimensional variable coeecient convection-diiusion equation dis-cretized by a fourth-order compact diierence scheme. Several conditions are formulated under which the coeecient matrix is guaranteed to be an M-matrix. We further investigate the eeect of diierent orderings of the grid points on the ...

The unsupervised learning network is explored to incorpo rate self learning capability into image retrieval systems More speci cally we propose the adoption of a Self Or ganizing Tree Map SOTM to implement a self learning methodology that allows minimization of the role of users in an e ort to automate interactive retrieval This automatic learning mode is applied to interactive retrieval strate...

The use of online learning tutorials to provide instruction in schools of nursing is growing in popularity; however, the outcomes associated with this method of instruction are not well documented. The focus of this experimental study, conducted at 2 universities in northern California, was to determine the effectiveness of an online interactive multimedia-learning tool versus text only, text a...

In this paper a new method of modelling and dynamic composition of behaviour-rich interactive 3D virtual museum exhibitions is described. The method enables museum experts, without advanced knowledge in computer programming, to create 3D virtual exhibitions accessible both locally inside the museums and remotely over the Internet. The method uses a novel Beh-VR modelling approach, which is comp...

User-interactive undo is a kind of recovery facility that allows users to correct mistakes easily by canceling and reexecuting operations that have already been executed. Supporting user-interactive undo is essential for authoring processes in new database applications such as software engineering, hypermedia, and computer-aided design. A partial rollback using savepoints supported by commercia...

We propose an interactive volume rendering method using flexible texture mapping capability of standard PC graphics hardware. Although volume rendering is computationally expensive, interactive visualization can be achieved by slice-based method in which volume data set is represented as a stack of polygonal slices and rendered by texture mapping and α-blending function accelerated by graphics ...

Graph drawing is an information visualization technology for illustrating relations between objects. Interactive graph drawing is often important since it is difficult to statically lay out complex graphs. For the interactive drawing of general undirected graphs, we previously proposed the high-dimensional approach, which used static graph layouts in high-dimensional spaces to dynamically find ...

The purpose of this study is to investigate the effect of corporate governance (CG), corporate social responsibility (CSR) and their interactive effect on the value of companies listed on the Tehran Stock Exchange. For this purpose, the data of 194 companies listed on this stock exchange, which was selected using a systematic elimination method, from 2011-2017 were collected and analyzed using ...