Introduction: The future of any nation depends on how its children's care, According to their likely future health needs of the adult population model for healthy living and wealth has increased. One of the most pressing health diet. This study is done to aimed investigate the factors influencing malnutrition in children in the past for weight loss and weight gain can be seen today.   Methods a...

suffering from disorder and chaos, tehran is a city capable of introduced as one of the most beautiful cities in the world for its historical and geographical capacities. unfortunately, in the modern era and after the islamic revolution when urban development destiny started to depend on engineers due to their increasing authority in urban management, culture role was undermined and tehran unde...

This dynamic survey offers an “entry point” for current research in oriented matroids. For this, it provides updates on the 1993 monograph “Oriented Matroids” by Björner, Las Vergnas, Sturmfels, White & Ziegler [73], in three parts: 1. a sketch of a few “Frontiers of Research” in oriented matroid theory, 2. an update of corrections, comments and progress as compared to [73], and 3. an extensive...