in the present study, the microstructural changes of a nickel based superalloy nimonic80a during a non-isothermal deformation were studied. therefore, microstructure evolutionduring hot side pressing test was predicted with combined methods of finite element analysis andprocessing map of the material. the predicted results were validated through experimentalmicrostructural studies. the results ...

The capability of multilevel input ring-TCM coding scheme for generating high-rate codes with improved symbol Hamming and squared Euclidean distances is demonstrated. The existence of uniform codes and the decoder complexity are also considered.

In this paper uniform consistency of estimators obtained from kernel based local linear estimating equations is obtained. Furthermore it is shown that the rate of convergence is at least n for a suitable choice of bandwidth. These result are used to find asymptotic results for the integral of the estimator. As an application we consider an “inverse probability of missingness reweighted estimati...

This thesis is about digital control theory and presents an account of methods for enabling and analysing intentional non-uniform sampling in discrete compensators. Most conventional control algorithms cause numerical problems where data is collected at sampling rates that are substantially higher than the dynamics of the equivalent continuous-time operation that is being implemented. This is o...

In this paper, we study asymptotic uniform data-rate guarantees in large wireless networks from an information-theoretic viewpoint. We consider the following question: what is the maximum achievable data rate that such a network can support for communication from an arbitrary radio node to its destination under transmission power and network-topology constraints, as the network size goes to inf...

This paper addresses the problem of estimating a convex regression function under both the sup-norm risk and the pointwise risk using B-splines. The presence of the convex constraint complicates various issues in asymptotic analysis, particularly uniform convergence analysis. To overcome this difficulty, we establish the uniform Lipschitz property of optimal spline coefficients in the `∞-norm b...

This paper studies the asymptotic characteristics of uniform scalar quantizers that are optimal with respect to mean squared error. It is shown that when a symmetric source density with infinite support is sufficiently well behaved, the optimal step size ∆N for symmetric uniform scalar quantization decreases as 2σ N V −1 1 / 6N 2 ( ) , where N is the number of quantization levels, σ 2 is the so...

∗Department of Economics, Boston University, 270 Bay State Road, Boston, MA 02215, USA, CEMA, Central University of Finance and Economics, and AFR, Zhejiang University, China. Email: [email protected]. Tel: (617) 353 6675. †Department of Economics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong. Email: [email protected]. Tel: (+852) 2358 7612. ‡Antai College of Economics and ...

This paper discusses an imperfect preventive maintenance model for a deteriorating repairable system with consideration of the reliability limitand random maintenance quality. The model is derived from the combination of failure rate adjustment and age over an infinite time horizon. The maintenance intervals are obtained assuming both the failure rate increase factor and age restoration factor ...