Abstract: A 2-rainbow domination function of a graph G = (V, E) is a function f mapping each vertex v to a subset of {1, 2} such that ⋃ u∈N(v) f (u) = {1, 2} when f (v) = �, where N(v) is the open neighborhood of v. The weight of f is denoted by wf (G) = ∑ v∈V �f (v)�. The 2-rainbow domination number, denoted by r2(G), is the smallest wf (G) among all 2-rainbow domination functions f of G. The ...

where they make those critical decisions that govern their lives. You who garden certainly know that plants have a mind of their own. Given that humans, and the majority of animals, solve many of their stressful problems (say, hunger) with a change in behavior (foraging for food), where are these decisions made in plants? An intriguing, and visually pleasing, example of such decision-making can...

a book reviewing pornographic publications. To study pornographic literature in sufficient depth to write a serious treatise on the subject is brave. Cogniscenti are likely to wonder to each other why one needed to do it. To write a foreword to the book, or even a review, is pretty brave too. Hardly a mess dinner passes without some colleague (usually a surgeon) springing to his feet to tell th...

Within the European Union, scientific fisheries research and advice is passed down a chain of central European institutions before being incorporated into policy. However, advice is often poorly or only partially implemented and the system has largely failed to achieve sustainable fisheries management. This paper aims to explain why, by examining the use of fisheries science within the Common F...

scientific progress and development is one of the significant issues and hot debates of the iranian government. there are some researches and seminars carried out and held regarding influential factors of scientific progress. unfortunately there is no proper place for legal and institutional factors but exceptionally and partially (intellectual property rights factor). my idea is that scientifi...

0