The objective of the present study was to investigate the inhibitory effect of a commercially available essential oil-containing mouth rinse 12 hours after a single rinse and two weeks of twice daily rinsing, on volatile sulphur compounds (VSC) producing bacteria on the tongue. The study was a randomized, double-blind, controlled crossover design. Thirty-six healthy subjects, aged 20-48 years, ...

Classification of text documents is of significant importance in the field of data mining and machine learning. However, the vector representation of documents, in classification problems, results in a highly sparse data with immense number of variables. This necessitates applying an efficient variables selection and dimensionality reduction technique that ensures model’s selectivity, accuracy ...

BACKGROUND AND OBJECTIVE This study aims to estimate the prevalence of oral halitosis in a young population and show the effect of chewing gum on their breath. PATIENTS AND METHOD Prospective, descriptive correlational cross section study. We selected a convenience sample of 121 young individuals and 98 completed the study. It was carried out at the University Dental Hospital-University of Ba...

This paper presents an evaluation of an optimal DC bus voltage regulation strategy for grid-connected photovoltaic (PV) system with battery energy storage (BES). The BES is connected to the PV system DC bus using a DC/DC buck-boost converter. The converter facilitates the BES power charge/discharge to compensate for the DC bus voltage deviation during severe disturbance conditions. In this way,...

Process groups and group-based communication have proven to be useful paradigms for structuring reliable applications in distributed systems. The approach is typically realized through view-synchronous communication (VSC) that integrates a reliable multicast facility with a group membership service in the form of view changes. In this paper we examine algorithmic issues associated with VSC grou...

This paper deals with synchronization problems of chaotic systems by applying a novel variable structure control (VSC) scheme. The synchronization of Chua s circuit, the R€ ossler system and the Lorenz system, respectively, were used as illustrative examples. Simulation results indicated that the proposed new VSC scheme can significantly improve the synchronousness performance. These promising ...

This paper considers the non-linear control of industrial processes based on self-tuning discrete variable structure control (VSC) technique. A novel and systematic VSC design methodology is proposed, which integrates an estimator based on recursive least square algorithm, a discrete quasi-sliding surface and a optimization method. Contrary to the trial and error selection of the variable struc...

A new totally invariant state feedback controller is designed by combining the classical state feedback controller and the variable-structure control (VSC). The combination of these two different control methods has the advantages of both their merits: 1) the easy design of the state feedback and 2) the strong robustness of the VSC. In other words, the system performance can be simply designed ...

This paper presents the integration of the Voltage Source Converted-High Voltage Direct Current model| (VSCHVDC) into a conventional Optimal Power Flow (OPF) formulation. The assembled VSC-HVDC-OPF model is computationally implemented and solved by using the Matlab ® optimization toolbox. In this sense, the development complexity degree of the proposed implementation is equivalent to that requi...

The researches on direct AC-AC converters have been an important field. The DC-modulated method, which was used in DC-DC converters before, is used in AC-AC converters to realize a direct AC-AC converting now. The traditional control method regulates the output by adjusting the duty ratio. Its’ core is the PWM technology. In this paper, the variable structure control (VSC) strategy was utilized...