Abstract To determine the optimal network architecture between Basic Service Set, Extended Set and Independent this study established a new algorithm to assess Voice over Internet Protocol (VoIP) metrics of different IEEE 802.11 technologies. An important coefficient for each VoIP metric parameter has been invented rank standards identify most efficient one application. The best overall perform...

Financial markets are highly complex adaptive systems. This paper deals with the application of simulators in software architectures for back-testing and automating financial market trading strategies. It characterizes traits and problems of algorithmic trading and describes the established use of simulators in back-testing and automated trading. A new approach in the form of a hierarchical sof...

This paper presents the simulation of Vertical Handover Algorithms (VHA) using NCTUns and tested them on scenarios with WiFi/GPRS or WiFi/WiMAX Mobile networks: The first evaluates parameters such as the network bandwidth, economic cost of the connection and the mobile node mobility and uses a cost function to evaluate candidate networks. The second one is based on application requirements such...

The segmentation method proposed in this paper is based on the observation that a single physical reflectance can have many different image values. We call the set of all these values a dominant colour. These variations are caused by shadows, shading and highlights and due to varying object geometry. The main idea is that dominant colours trace connected ridges in the chromatic histogram. To ca...

High-performance streamprocessing is critical inmany sense-and-respond application domains—fromenvironmental monitoring to algorithmic trading. In this paper, we focus on language and runtime support for improving the performance of sense-and-respond applications in processing data from high-rate live streams. The central tenets of this work are the programmingmodel, the workload splitting mech...

for each input v. If every Fi is regular, meaning that the corresponding virtual valuation function φi(vi) = vi − 1−Fi(vi) fi(vi) is strictly increasing, then the virtual welfare-maximizing allocation rule is monotone and, after we define suitable payments, maximizes expected revenue over all DSIC auctions. This characterization of optimal auctions can be extended to irregular distributions, bu...

In this paper, we present an application that covers the whole complex school timetabling process, from the data introduction to the final adjustment of the automatically generated solution. On the one hand, our application interacts with the Academic Administration Official Systems (AAOS) and simplifies the hard phase of introducing the data. On the other hand, complete solutions are efficient...

The technique of image compression using Iterative Function System IFS is known as fractal image compression An extension of IFS theory is called as Partitioned or local Iterative Function System PIFS for coding the gray level images The theory of PIFS appears to be di erent from that of IFS in the sense of application domain Assuming the theory of PIFS is same as that of IFS several techniques...

This article discusses to adapt ’Pogany’, a tangible cephalomorphic interface designed and realized in LIMSI-CNRS laboratory, to use for music synthesis purposes. We are interested in methods for building an affective emotion-based system for gesture and posture identification, captured through a facial interface that understands variations of luminosity by distance or touch. After a brief disc...