in this article the influence of the equipped playgrounds has been compared with natural playgrounds. playing and moving are the main activity in a young child’s life. allowing children to experience the natural and man-made elements in their living environment generates cognitive and social skills development and increases their educational qualities. today, in iran most spaces for children’s ...

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id 1427007 [January 2007].7. Hubbard R, Munford S. Presence of the “Alkaline Tide”. JAMA 80: 304–305, 1923.8. Lawson DM. A model for visualizing fluid handling by the gastrointestinal tract. Adv Physiol Educ 27: 87–88, 2003.9. Lujan HL, DiCarlo SE. Physiology should be taught as science is practiced: an inquiry-based activity to investigate the “alkaline tide”. Adv Physiol Educ 39: ...

We have developed a speech synthesis system based on the speech production process. In the system, control parameters for the vocal tract shape and vocal cords are interactively set in order to produce speech output. Such an intuitive system is useful not only for speech research but also for teaching materials in speech science. In this paper, a network-based articulatory speech synthesis syst...

Due to the limitation of energy resources, energy efficiency is a key issue in wireless sensor networks (WSNs). Clustering is proved to be an important way to realize hierarchical topology control, which can improve the scalability and prolong the lifetime of wireless sensor networks. In this paper, an energy-driven unequal clustering protocol (EDUC) for heterogeneous wireless sensor networks i...