background: behavioral disorders are common in the pediatric age group. this study aims to assess the relationship between the frequency of behavioral and mental disorders and counseling with family members and friends in a representative sample of iranian children and adolescents. methods: in this nationwide study, 14880 school students, aged 6–18 years, were selected by cluster and stratified...

With the continuous development of the industrialization process, the countries all over the world gradually appeared lack of agricultural labor force and aging phenomenon, which was especially prominent in developed countries. However the agricultural robot with high operating efficiency, high qualities of work will play an increasingly important role in future agricultural production. Robot n...

this paper proposes a new mathematical model for designing and planning postal parcels carriage and postal networks. the objective of postal network designing is to determine the location, size and connection between the postal stations in a city, province or country. in this paper, a kind of multiple locations-allocations hub problem with limited capacity in collecting, distributing and broadc...

In this paper, we propose a personal navigation approach to Semantic Wikis. In semantic wikis, wikis pages are annotated with semantic data to facilitate research and navigation. The navigation is collaborative designed and shared by every user. However, individuals involved in a collaborative knowledge building activity need to customize the navigation according to her personal needs. In order...

Poor interpretability of current transportation systems has become an obstacle to further develop the intelligent transportation systems (ITS). Our design and implementation of intelligent transportation information service systems (ITIS) focuses on integrating heterogeneous data, transportation systems, and resources by using the grid technique. The ITIS project will refine and summarize the b...

In conventional transportation problem (TP), supplies, demands and costs are always certain. In this paper, the author tried to categories the TP under the mixture of certain and uncertain environment and formulates the problem and utilizes the crisp numbers, triangular fuzzy numbers (TFNs) and trapezoidal fuzzy numbers (TrFNs) to solve the TP. The existing ranking procedure of Liou and Wang is...

This paper is primarily concerned with theoretical evaluation of the performance of multiprocessors system. A markovian waiting line model has been developed for various different multi-processors configurations, with shared memory. The system is analysed at the request level rather than job level.

Resource management in complex socio-technical systems (e.g. management and control (road, rail, sea, air), industrial engineering systems, transportation logistics, etc.) is a central and crucial process. The many diverse components involved, together with various constraints such as real-time conditions, make it impossible to devise exact optimal solutions. In this article, we present an appr...

During the planning phase of modern, complex, block-structured, large-area located, but still landscape-harmonized health-care buildings, the key is the optimal positioning of the blocks and functions, simultaneously ensuring the most-effective backup-paths for any transportation route failure in the buildings in order to speed up system operation, reduce maintenance costs and especially to imp...