Editor Max J. Skidmore discusses a welcome exchange with the co-author of a 1983 article on Social Security that he has severely criticized numerous times. Peter Germanis, now writing as “Peter the Citizen,” reached out to indicate that he now directs his attention to TANF, and has not considered Social Security for many years. The resulting communication clearly demonstrates that thoughtful co...

The aim of the study is to analyse new axes cleavages which came into existence in Poland after 2005. analysis presented context generally accepted notions and concepts political cleavages. methods used for are: comparative method historical method. Findings research are following way. First, author determines that only partially correspond classical cleavages, then identifies analyses stimulat...

Most of the research on social networks has almost exclusively focused on positive links between entities. There are much more insights that we may gain by generalizing social networks to the signed case where both positive and negative edges are considered. One of the reasons why signed social networks have received less attention that networks based on positive links only is the lack of an ex...

years of age worldwide (39%). also in iran it is the cause of 45% of deaths. cardiovascular diseases place a huge social, economic and health burden on the society. patients suffer from this disease when they are at their highest social and economic productivity. the risk of this disease is related to modifiable factors such as smoking and high blood pressure, and also non-modifiable factors su...

Influence maximization in social networks has been widely studied motivated by applications like spread of ideas or innovations in a network and viral marketing of products. Current studies focus almost exclusively on unsigned social networks containing only positive relationships (e.g. friend or trust) between users. Influence maximization in signed social networks containing both positive rel...