The convergence of wireless mobile technologies and Internet allows compelling possibilities for future applications due to the new advancement, constantly growing and personalized services in the mobile communication. 3G (third generation) and Wi-Fi are major wireless technologies that are used by most people today. The two most important phenomena impacting telecommunications over the past de...

This study was undertaken with the primary objective of modeling grain velocity based on experimental data obtained under controlled conditions a laboratory using rectangular hydraulic tilting channel. Soft computing approaches, i.e., support vector machine (SVM), artificial neural network (ANN), and multiple linear regression (MLR), were applied to simulate four input variables; shear velocity...

Keywords-Fuzzy reasoning, Fuzzy system, Variable weighted synthesis inference method, CRI method, Fuzzy control. 1. I N T R O D U C T I O N It is well known that fuzzy inference is a theoretical foundation of fuzzy control systems and fuzzy expert systems. At present, general fuzzy inference methods include the CRI (compositional rules of inference) method, (+,-)-centroid method, simple inferen...

In this paper, techniques and algorithms developed in the framework of statistical learning theory are analyzed and applied to the problem of determining the location of a wireless device by measuring the signal strengths from a set of access points (location fingerprinting). Statistical Learning Theory provides a rich theoretical basis for the development of models starting from a set of examp...

This paper presents a case study of a Wi-Fi system operating in the frequency of 2.4 GHz. Two certain types of WLAN environments are examined: a home environment (typical residence) and a complex office environment. Experimental acquired data, for both single floor and multiple floor scenarios, are compared with the theoretical values provided by an existing plethora of indoor RF models, which ...

Wi-Fi based gait recognition has many potential applications. However, the information derived from changes with walking path. This makes human identification through really challenging, existing systems require subject along a predetermined path dependence restriction impedes being widely used. In this paper, independent system for single subject, Wi-PIGR, is proposed. identified regardless of...

The present paper is a continuation of [1]. In the previous paper we dealt with the purely asymptotic estimations, whereas now our goal is to provide some estimates valid for quite a substantial part of the tail. We shall deal with the following simple case. An investor operating on an emerging market, has in his portfolio two currencies which are highly dependent, for example euros (EUR) and S...

there area lot of mobile computer devices with a variety of applications and users tend to use them more. due to the limitations of mobile devices, running most of the procedures are impossible. to resolve this problem, mobile devices can be connected to the grid, to use the facilities of grid. on the other hand the communication mechanisms are different for each device and they cannot be conne...