An increasing number of photometric observations of multiple stellar populations in Galactic globular clusters is seriously challenging the paradigm of GCs hosting single, simple stellar populations. These multiple populations manifest themselves in a split of some evolutionary sequences of the cluster color-magnitude diagrams. In this paper we will summarize the observational scenario.

Learning Classifier Systems (LCSs) have gained increasing interest in the genetic and evolutionary computation literature. Many real-world problems are not conveniently expressed using the ternary representation typically used by LCSs and for such problems an interval-based representation is preferable. A new model of LCSs is introduced to classify realvalued data. The approach applies the cont...

injuries, especially traffic accidents are so important causes of death, disability, hospital expenses, economic damages to the society which world health organization selected them as the main subjects for investigation and research. we have done an epidemiologic study about trauma in guilan, a province in north of iran. this is   a descriptive study carried out on patients with traumatic inju...

our experience as a result of this war shows that early intubation, aggressive resuscitation and gcs score are important factors for survival. the time of arrival has great importance on mortality. despite the diversity of views in the literature, patients with gcs of 4 and above should be operated if surgical pathologies exist, and decompressive craniectomy must made wide. if duraplasty is nec...