08:45 Jun 14, 2006 

08:38 Jun 14, 2006 

some considerations for better suggestions:
1. the impacts usually after the study are summated to test significance, how many + and how many - , and how much is the + and how much is the -
2. it can't be "احادية التقييم" in this case it is accused to be biased study. A consoritum of scientists from diverse specializations are involved
3. The point here as some of you clarified, that we want to obtain impact one time counted or considered such that when comparing it with another one there should be no overlap but still we can assign + or - number to impact and tote up all impacts.
thnx :)

22:07 Jun 13, 2006 

it is a study of the impact on wide range.

22:06 Jun 13, 2006 

"The task of avoiding double couting of effects and impacts is difficult because of the many interrelationships existing in the environment. In practice, therefore, it is permissible to view a human concern from different perspectives, provided that the uniqueness of the phenomenon identified by each impact indicator is preserved.
The point can be illustrated by noting that there could be several impacts of some action affecting reaction; the major human concern might be economic for those whose income is derived therefrom, social for those who use the area, and ecological for those concerned with the effects on wildlife."

It means that assessor can count the impact of an action many times, once using economic approach, 2nd time using social approach and third time from ecological perspective. As a result he may obtain 3 impacts while that action or the cause is one thing > here the cause is considered 3 times

22:06 Jun 13, 2006 

21:39 Jun 13, 2006