Science and mathematics developed with great leaps that affected the world, as a result, new trends concepts appeared based on development of computers. One these is "Voronoi diagram ". The concept emerged an important mathematical principle in field architecture, computer algorithms Voronoi significantly. one most common structural network systems nature, due to its abundance nature through pl...

Recently security has became one of the major concern in Information System (IS) development. Different security modeling language or security extension is used to model security features of IS. Mal Activity Diagram (MAD) is used at the design stage to represent security aspect. But it cannot model all the security risk management concepts. Without full coverage of concepts, it is not possible ...

UML is the de facto standard for modelling concurrent systems in the industry. Activity diagrams allow designers to model workflows or business processes. Unfortunately, their informal semantics prevents the use of automated verification techniques. In this paper, we first propose activity diagram patterns for modelling timed concurrent systems; we then devise a modular mechanism to compose tim...

Introduction: Alzheimer’s disease (AD) is a chronic condition characterized by gradual decline of mental abilities and behavioral disorders, which decreases the quality of life in elderly people. The aim of this study was to evaluate behaviors that may prevent elderly people from AD in Yazd. Methods: This cross-sectional study was conducted on 220 people aged from 60 to 70 years in Y...

background and objectives: alzheimer's disease (ad) is an age dependent disorder. ad is associated with decrease of brain acetylcholine level. nowadays, one of the methods for progression inhibition of ad is using acetylcholinesterase inhibitors. rosaceae is a large plant family. different biological effects of some species of this family have been reported. the aim of the present study was to ...

There is still much problem in sizing software despite the existence of well-known software sizing methods such as Function Point method. Many developers still continue to use ad-hoc methods or so called “expert” approaches. This is mainly due to the fact that the existing methods require much information that is difficult to identify or estimate in the early stage of a software project. The ac...

We show that the geometry of K3 surfaces with singularities of type AD -E contains enough information to reconstruct a copy of the Lie algebra associated to the given Dynkin diagram. We apply this construction to explain the enhancement of symmetry in F and IIA theories compactified on singular K3's.

The Unified Modeling Language (UML) has been widely accepted in the software development industry because of the benefits it brings to the task of specifying system requirements and design decision. However, models are not the final product of a software development cycle. Application code, which is compiled and executed, has to be derived from these models. Work on deriving transformation tech...