the zagreb indices are the oldest graph invariants used in mathematical chemistry to predictthe chemical phenomena. in this paper we define the multiple versions of zagreb indicesbased on degrees of vertices in a given graph and then we compute the first and secondextremal graphs for them.

background: fractures of distal radius are one of the most common fractures seen by physicians and account for 20% of all fractures seen in the emergency room. various factors contribute in secondary displacement of fracture fragments after anatomic or near anatomic close reduction and cast immobilization in distal radius fractures. this study was designed to examine the correlation between rad...

oil sector is the most effective sector in these countries. oil is the most important product that world industries use as the cheapest energy. the price of oil depends on the world’s supply and demand and many economic, political and geographical variables. this is the reason why the price of oil has fluctuations. the fluctuations in oil price lead to fluctuate in the oil revenues of the membe...

the economic situation in the arab countries is due to several factors as the political crisis in a socio-economic vulnerability. political changes are usually accompanied by a drop in production, a deterioration of macroeconomic balances, a high level of poverty, an appearance of economic corruptions and a structural increase in unemployment. in addition, the expansion of terrorism is a main i...

abstract background: several studies have examined the reflex response of ankle musculature to sudden inversion in noninjured and injured subjects. to date, there have been no studies to determine the effect of versatile degrees & conditions of perturbation on the ankle musculature latency. the purpose of this study was to measure and determine whether there was a difference in ankle musculatur...

this paper discusses some of the fundamental considerations when managing mining slopes. the goal of management is to reduce all components that contribute to the geotechnical risk and by doing so reduce the risk to as low as reasonably achievable. the techniques and procedures suggested are not exhaustive; they represent a snapshot of some of the practical techniques the author has found usefu...

Democratic simple majority voting is perhaps the most widely used method of group decision making in our time. Standard theory, based on “instability” theorems, predicts that a group employing this method will almost always fail to reach a stable conclusion. There is one case that the classic instability theorems do not treat: an even number of voters in 2 dimensions. We resolve this remaining ...

A global Slowdown, rising oil prices, and monetary tightening in industrial countries may lead to net capital outflows which accentuate high ratios of short-term to total external debt. This paper focuses on finding consistent indicators of financial instability. Knowledge of these indicators should assist attempts to implement institutional financial reform and improve an economy's resilien...