This paper presents a dynamic bandwidth allocation scheme for new and handoff voice calls in cellular networks. The main idea of the new scheme is based on monitoring the elapsed real time of handoff calls and according to both a time threshold (te) and a dynamically changing bandwidth threshold (Bt) parameters, a handoff call is either prioritized or treated as a new call. Also in this paper, ...

Josef Ladenbauer, 2, ∗ Judith Lehnert, Hadi Rankoohi, 2 Thomas Dahms, Eckehard Schöll, and Klaus Obermayer 2 Institut für Softwaretechnik und Theoretische Informatik, Technische Universität Berlin, Marchstraße 23, 10587 Berlin, Germany Bernstein Center for Computational Neuroscience Berlin, Philippstraße 13, 10115 Berlin, Germany Institut für Theoretische Physik, Technische Universität Berlin, ...

Extreme precipitation events have significant environmental consequences because they may cause considerable damages to urban as well as rural areas. The aim of this work is to construct a threshold model which will describe the exceedances over a threshold for the daily precipitation totals over Athens, Greece. The data used are daily precipitation totals recorded at the National Observatory o...

The first essay “A Simple Threshold Model of Theft” proposes and estimates a simple threshold model of theft, where all individuals have access to the same distribution of theft opportunities, and what differentiates them is their expectation of the cost of theft. The data support the basic assumptions of the model. The best predictors of theft are variables that are good proxies for patience a...

We propose a new, generic and flexible methodology for nonparametric function estimation, in which we first estimate the number and locations of any features that may be present in the function, and then estimate the function parametrically between each pair of neighbouring detected features. Examples of features handled by our methodology include change-points in the piecewise-constant signal ...

During the process of economic development, different economic policies are adopted in accordance with particular circumstances. Therefore, conventional methods of time-series analysis may give misleading results if the problems associated with regime switches are not considered. The relationship between export growth and output growth is explored using a multivariate threshold model with regim...

In this paper, I reflect on the developments of the threshold model in time series analysis since its birth in 1978, with particular reference to econometrics.

The paper investigates the relationship between inflation and inflation uncertainty using the Iranian data over the period 1959:03 – 2008:02. GARCH models are used to examine this relationship. Granger methods are employed to provide statistical evidence for the relationship between average inflation and inflation uncertainty. Threshold GARCH (TGARCH) models are considered to investigate asymme...

1.1 Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Social Influence And Influence Maximization . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

There are many unavoidable noise interferences in image acquisition and transmission. To make it better for subsequent processing, the noise in the image should be removed in advance. There are many kinds of image noises, mainly including salt and pepper noise and Gaussian noise. This paper focuses on the research of the Gaussian noise removal. It introduces many wavelet threshold denoising alg...