introduction: the aim of this study was to evaluate the effect of dentin on the antifungal activity of gray and white-colored mta (gmta, wmta) using a tube-dilution test. materials and methods: mta preparations were tested freshly mixed and after 24h on candida albicans (ca). the experiment was performed in 24-well culture plates. fifty wells were used and divided into four experimental groups ...

Traditional document representation for classification follows Bag of Words (BoW) approach to represent the term weights. The conventional method uses the Vector Space Model (VSM) to exploit the statistical information of terms in the documents and they fail to address the semantic information as well as order of the terms present in the documents. Although, the phrase based approach follows th...

Research on stock price prediction and trading model using evolutionary computation has been done in recent years. As we know, prediction in the stock market is quite difficult for a number of reasons. First, the ultimate goal of our research is not to minimize the prediction error, but to maximize the profits. Second, the weak relationships among variables tend to be nonlinear, and they may ho...

Under increased scrutiny from top management and shareholders, marketing managers feel the need to measure and communicate the impact of their actions on shareholder returns. In particular, how do customer value creation (through product innovation) and customer value communication (through marketing investments) affect stock returns? This paper examines conceptually and empirically how product...

Under increased scrutiny from top management and shareholders, marketing managers feel the need to measure and communicate the impact of their actions on shareholder returns. In particular, how do customer value creation (through product innovation) and customer value communication (through marketing investments) affect stock returns? This article examines, conceptually and empirically, how pro...

The problem of optimal control of power distribution systems is becoming increasingly compelling due to the progressive penetration of distributed energy resources in this specific layer of the electrical infrastructure. Distribution systems are, indeed, experiencing significant changes in terms of operation philosophies that are often based on optimal control strategies relying on the computat...

Recent developments around the Smart Grid promise more efficient power generation and distribution. In contrast to the current design of the electricity grid, the Smart Grid is heavily based on IT for managing communication flows. Given the large number of market participants, data exchanged should be marked up in a way that facilitates flexible modelling, extension and integration. In addition...

Previous studies of Internet traffic have shown that a very small percentage of flows consume most of the network bandwidth. It is important to understand the characteristics of such flows for traffic engineering and modeling purposes. Several prior researchers have characterized such flows using different classification schemes: by size as elephant and mice; by duration as tortoise and dragonf...

In many situations, owing to the complexity of flow, access to detailed representation of the flow field is impossible. Therefore, the capability of representing the essential physics through fewer degrees of freedom (model reduction) is of great value. For example, control systems rely on models through differential equations. The use of partial differential equations governing the flow is int...

Flow control refers to the idea of analyzing and modifying the behavior of fluid flows in order to achieve a desired outcome. In this paper we review the history and current state of the art in flow control. Various past and present techniques are categorized and discussed.