In the paper the optimization of the control loops of the variable frequency induction motor drive for the feed screw of a flame reactor has been carried out to obtain required dynamic characteristics of the electric drive for known parameters of the plant. Simulation studies of basic control loops (current, flux-linkage and speed) are performed and dynamic parameters of control quality are pre...

We study the quaternionic linear system which is composed out of terms of the form ln(x) := ∑n p=1 apxbp with quaternionic constants ap, bp and a variable number n of terms. In the first place we investigate one equation in one variable. If n = 2 the corresponding equation, which is normally called Sylvester’s equation will be treated completely by using only quaternionic algebra. For larger n ...

The service robot that carries out tasks ordered by the users through speech needs a vision system to recognize the objects appearing in the orders and a speech interface for natural communication with the user. The user’s order may be explicit or implicit. The speech interfaces should have a capability of dealing with explicit as well as implicit utterances. In this paper, we present ‘how envi...

This article presents a method of the rough estimation of geographical coordinates of villages and cities, which is described in the 19th-Century geographical encyclopedia entitled: “The Geographical Dictionary of the Polish Kingdom and Other Slavic Countries” [18]. Described are the algorithm function for estimating location, the tools used to acquire and process necessary information, and the...

We examined the contents of language-mediated prediction in toddlers by investigating the extent to which toddlers are sensitive to visual shape representations of upcoming words. Previous studies with adults suggest limits to the degree to which information about the visual form of a referent is predicted during language comprehension in low constraint sentences. Toddlers (30-month-olds) heard...

Caffeine, a purine alkaloid, is a key component of many popular drinks, most notably tea and coffee, yet most plant scientists know little about its biochemistry and molecular biology. A gene from tea leaves encoding caffeine synthase, an N-methyltransferase that catalyses the last two steps of caffeine biosynthesis, has been cloned and the recombinant enzyme produced in E. coli. Similar genes ...

We make a first investigation into a recently raised concern about the suitability of existing data analysis techniques when faced with the counter-intuitive properties of high dimensional data spaces, such as the phenomenon of distance concentration. Under the structural assumption of a generic linear model with a latent variable and an additive unstructured noise, we find that dimension reduc...

This paper introduces adaptive fuzzy equalizers with variable step size for broadband power line (PL) communications. Based on delta-bar-delta and local Lipschitz estimation updating rules, feedforward, and decision feedback approaches, we propose singleton and nonsingleton fuzzy equalizers with variable step size to cope with the intersymbol interference (ISI) effects of PL channels and the ha...