A “Fifteen Puzzle” in Fran

Mixing time of the fifteen puzzle

We show that the mixing time for the fifteen puzzle in an n× n torus is on the order of n logn.

Genes associated with multiple sclerosis: fifteen and counting

The mixing time of the fifteen puzzle

We show that there are universal positive constants c and C such the mixing time τmix for the fifteen puzzle in an n× n torus satisfies cn logn ≤ τmix ≤ Cn log n.

درمان آلوپسی (ریزش مو) و اسکار (جای زخم) روی سر با چند بافت گستر و به روش زیگزاگ (پازل): یک روش جدید

Background and Objective: Repairing scalp scar and alopecia is a concern of surgeons. Treating it with tissue expander has indicated promising results in recent decades. This study provides a new method of using two tissue expanders simultaneously for tissue over expansion and repairing flaps’ edge with puzzle method. Materials and Methods: This study was conducted on fifteen 5 to 34- year- ol...

Comparison of Lecture and Puzzle for Teaching Medical Emergency to Anesthesiology Students: Students’ Learning and Viewpoints

Introduction: Emphasis on active learning in training leads to the development of new educational strategies for teaching theoretical and clinical courses in medical sciences. Active involvement in the teaching-learning process improves learning. The purpose of the present study is to compare two methods of lecturing and puzzle in Medical Emergency Course, regarding students’ learning & viewpoi...