OBJECTIVE Preterm infants are exposed to the visual environment earlier than fullterm infants, but whether early exposure affects later development is unclear. Our aim was to investigate whether the development of visual disengagement capacity during the first 6 months postterm was associated with cognitive and motor outcomes at school age, and whether associations differed between fullterms an...

Many methods for deriving vectorcardiographic (VCG) leads from 12-lead electrocardiogram (ECG) were published. All of them are based on a linear transformation. Differences are only in coefficients of transformation matrixes which are designed based on a model or on linear regression methods. This paper presents and assesses a new nonlinear transformation method based on artificial neural netwo...

All vector spaces and so forth here will be defined over the complex numbers. If z = x+i y is a complex number, where x, y are real numbers, then the complex conjugate of z is denoted z and defined to be x− i y. The complex conjugate of a sum or product of complex numbers is equal to the corresponding sum or product of complex conjugates. The modulus of a complex number z is the nonnegative rea...

to determine the suitable indices for vegetation cover and production assessment based on the remote sensing data, simultaneous digital data with field data belonging to the spring rangeland of the semirom-isfahan province were analyzed. during two years of monitoring the annual, grass, forb, and shrub vegetation cover and the total production data from 86 were collected. the global positioning...

The computational solution of large scale linear programming problems contains various difficulties. One of the difficulties is to ensure numerical stability. There is another difficulty of a different nature, namely the original data, contains errors as well. In this paper, we show that the effect of the random errors in the original data has a diminishing tendency for the optimal value as the...

Generalized linear models are a powerful tool to measure relationships between variables, as they can handle nonnormal distributions without altering the properties of variables involved. When applied to risk factor analysis, they can help determine the most important factors contributing to the incidence, prevalence or acquisition of a particular medical condition. This paper presents a partic...

Let (X, Z, Y) denote a random vector such that Z and Y are real-valued, and X E ]Rd. Consider the partly linear regression function E(Y I Z, X) = (3Z + ¢(X), where (3 is an unknown parameter, and 4>(') is a smooth function on Rd. Suppose that 4>(') has a bounded kth derivative. Under appropriate conditions, it will be shown that the local polynomial based estimate achieve the usual optimal L2 a...