The distribution of shortest path lenghts is a useful characterisation of the connectivity in a network. The small-world experiment is a classical way to study the shortest path distribution in real-world social networks that cannot be directly observed. However, the data observed in these experiments are distorted by two factors: attrition and routing (in)efficiency. This leads to inaccuracies...

This paper proposes a technique for estimating steady-state quantiles from discrete-event simulation models, with particular attention paid to cycle-time quantiles of manufacturing systems. The technique is justified through an extensive empirical study and supported with mathematical analysis. The Cornish-Fisher expansion is used as a basis for this estimation, and it is shown that for an M/M/...

Abstract—With the rapid adoption of wearable technology, a ubiquitous platform may exist for continuous cuff-less blood pressure monitoring. Devices that monitor photoplethysmography (PPG) and/or electrocardiography (ECG) signals may be capable of accurately estimating blood pressure. Previous work has demonstrated promising estimation techniques, but they remain infeasible for consumer adoptio...

The α-stable family of distributions constitutes a generalization of the Gaussian distribution, allowing for asymmetry and thicker tails. Its many useful properties, including a central limit theorem, are especially appreciated in the financial field. However, estimation difficulties have up to now hindered its diffusion among practitioners. In this paper we propose an indirect estimation appro...

The direct integral method (a generalization of the Himmelblau-Jones-Bischoff technique) and the conventional least squares approach are compared in the solution of kinetic estimation problems. Some examples demonstrate that the former method may be preferable in terms of mean square error of the estimates. Recent results on biased estimators are used to explain this fact. A three-stage estimat...

Wheel profile is a very important factor that helps the steering performance of railway vehicle. However, during operation, wheel tends to vary inconsistently due frictional contact at wheel-rail interface. This paper focuses on problem wheelset and its alteration affects Signal-based indirect estimation technique using Fast Fourier Transform (FFT) proposed establish relationship between dynami...