Optimal nonlinear codes for the perception of natural colours.

The Pleistochrome: Optimal Opponent Codes for Natural Colours

The Relationship between the Observances of Codes of Professional Ethics by Delivery Agents with Women's Perception of the Pain of Natural Childbirth

Background & aim: One of the important areas of midwifery services is safe satisfying delivery with the least amount of pain. The moral and professional commitment of health professionals and caregivers is the most important aspect of labor pain management. So, the purpose of the study was to assess the relationship between observance codes of professional ethics by the birthing team with the p...

Large amplitude vibration prediction of rectangular plates by an optimal artificial neural network (ANN)

In this paper, nonlinear equations of motion for laminated composite rectangular plates based on the first order shear deformation theory were derived. Using a perturbation method, the nonlinear equation of motion was solved and analytical relations were obtained for natural and nonlinear frequencies. After proving the validity of the obtained analytical relations, as an alternative and simple ...

Optimal Linear Codes Over GF(7) and GF(11) with Dimension 3

Let $n_q(k,d)$ denote the smallest value of $n$ for which there exists a linear $[n,k,d]$-code over the Galois field $GF(q)$. An $[n,k,d]$-code whose length is equal to $n_q(k,d)$ is called {em optimal}. In this paper we present some matrix generators for the family of optimal $[n,3,d]$ codes over $GF(7)$ and $GF(11)$. Most of our given codes in $GF(7)$ are non-isomorphic with the codes pre...

The Optimal Allocation of Iran's Natural Gas

T he optimal allocation of natural gas resources to various uses such as final and intermediate consumption, injection into oil fields, and exports can help policymakers to use this kind of resources efficiently. Empirical evidence support using hyperbolic discount rates instead of fixed discount rates in the economic literature. The purpose of this study is to maximize the social we...