In this study, a new servo control system is presented for the overhead crane based on discrete-time state feedback approach. It provides both robust tracking and load swing suppression. Inspired from independent joint and computed torque control in robot manipulator field, a new model is derived in which the crane actuators are considered as the main plant. The crane nonlinearities are then tr...

Existing one-time password (OTP) schemes suffer several drawbacks. Token-based systems are expensive, while software-based schemes rely on one-time passwords that are dependent on each other.-There are disadvantages to authentication schemes that rely on dependent OTPs. It is difficult to replicate the authentication server without lowering security. Also, current authentication schemes based o...

One of the earliest results in flow shop scheduling theory is an algorithm given by Johnson’s [1] for scheduling jobs on two or three machines to minimize the total elapsed time whenever the processing times of jobs are random. The present paper is an attempt to develop a heuristic algorithm for two stages specially structured flow shop scheduling in which the processing times of the jobs a...

We present a simple algorithm for the maximum independent set problem in an n-vertex graph with degree bounded by 4, which runs in O∗(1.1455n) time and improves all previous algorithms for this problem. In this paper, we use the “Measure and Conquer method” to analyze the running time bound, and use some good reduction and branching rules with a new idea on setting weights to obtain the improve...

We study independent component analysis with noisy observations. We present, for the first time in the literature, consistent, polynomial-time algorithms to recover non-Gaussian source signals and the mixing matrix with a reconstruction error that vanishes at a 1/ √ T rate using T observations and scales only polynomially with the natural parameters of the problem. Our algorithms and analysis a...

the momentum equation in the kinematic wave model is a power-law equation with two parameters. these parameters, which relate the discharge to the flow area, are commonly derived using manning’s equation. in general, the values of these parameters depend on the flow depth except for some special cross sections. in this paper, improved estimates of the kinematic wave parameters for circular chan...

In a partitioned probe graph the vertex set is partitioned into probes and non-probes, such that the set of non-probes is an independent set. A probe proper interval graph is the intersection graph of a set of intervals on the line such that every vertex is mapped to an interval, no interval contains another, and two vertices are adjacent if and only if the corresponding intervals intersect and...

Occurrences of outliers in multivariate time series are unpredictable events which may severely distort the analysis of the series. It may be noticed that a convenient way for representing multiple outliers consists in superimposing a deterministic disturbance to a Gaussian multivariate time series. Then outliers may be modelled as non – Gaussian time series components. The independent componen...

We prove that there exists linearly many independent edge chains of length k in a connected orientable triangulated 2-manifold (possibly with boundary) of genus zero, for any positive integer parameter k. Such an independent set of chains can be identiied by a simple linear-time algorithm. Our motivation is to simplify a surface by repeatedly contracting a large set of independent chains. Preli...