Heterogeneous cellular networks may be defined by several parameters that determine their performance, being known as the Key Performance Indicators (KPIs).. In order to guarantee a desired Quality of Service (QoS) a proper balance of these parameters is required. An approach to integrate a set of KPIs into a single one, is presented by using a Cost Function (CF). The CF takes these KPIs into a...

In this paper we consider a society of agents whose interactions are known. Our objective is to solve a strategic network infrastructure design problem to determine: (i) number of nodes (usually computers or servers) and their processing speeds, (ii) set of links between nodes and their bandwidths, and (iii) assignment of agents to nodes. From a performance standpoint, on one hand all the agent...

The present study addresses the problem of fixed-time stabilization (FTS) mobile robots (MRs). study’s distinguishing aspects are that system under examination is subjected to external disturbances, and states pushed zero in a finite time. This paper suggests new control techniques for chained-form nonholonomic systems (CFNS) disturbances. First, switching fractional-order (FO) approach propose...

The optimal control problem in a finite time horizon with an indefinite quadratic cost function for a linear system subject to multiplicative noise on both the state and control can be solved via a constrained matrix differential Riccati equation. In this paper, we provide general necessary and sufficient conditions for the solvability of this generalized differential Riccati equation. Furtherm...

Objectives: Quality of life, when referring to an individual’s health, is called health-related quality of life. The purpose of this study is to assess self-perceived hearing loss related quality of life of adolescents with hearing loss and its relationship with sex, age sub-groups or school settings with domains of quality of life. Methods: A school based survey was conducted in Tehra...

This paper address the problem of Bayesian estimation of the parameters, reliability and hazard function in the context of record statistics values from the two-parameter Lomax distribution. The ML and the Bayes estimates based on records are derived for the two unknown parameters and the survival time parameters, reliability and hazard functions. The Bayes estimates are obtained based on conju...

This paper describes work in progress on employing a general purpose natural language processing system, the Core Language Engine (CLE), to an interactive translation application. The CLE is a system for deriving Logical Form (LF) representations of natural language which are capable of supporting reasoning. The initial development of the CLE included substantial domain independent coverage of ...