one of the most important parameters essential in different water supplies, treatment, transfer and distribution projects, is water consumption per capita. but unfortunately in many cases, statistics and date available in texts or irrelevant samplings are used. varamin is a region located in south east of tehran. among the most important problems in this region, insufficiency of personnel prolo...

introduction: medical tourism as one of the dimensions of tourism is helping in sustainable development and dynamics of the economy. considering the low cost and high income of the industry and its role on strengthening country health structures, many developing countries focused their attention on the industrial sector and planning for it. the purpose of this research was to investigate effect...

We develop a rigidity theory for bar-joint frameworks in Euclidean $d$-space which specified classes of edges are allowed to change length coordinated fashion that requires differences lengths be preserved within each class. Rigidity these is generic property, and we characterize the rigid graphs terms redundant standard $d$-dimensional matroid. also interpret our main results matroid unions.