نتایج جستجو برای: west crossing
تعداد نتایج: 122541 فیلتر نتایج به سال:
We study non-crossing frameworks in the plane for which the classical reciprocal on the dual graph is also non-crossing. We give a complete description of the self-stresses on non-crossing frameworks G whose reciprocals are non-crossing, in terms of: the types of faces (only pseudo-triangles and pseudo-quadrangles are allowed); the sign patterns in the stress on G; and a geometric condition on ...
Economic development in China has been severely restricted by environmental problems such as carbon emissions. Improving green total factor productivity (GTFP) is an extremely important pathway to realizing peak and neutrality. Nevertheless, existing studies on China’s urban GTFP under the emissions constraint are still insufficient. In this context, study adopts directional distance function (...
Hypsarhythmia was originally spelled with one 'r' by Drs Frederick and Erna Gibbs when they coined the term in 1952.
Detailed field geological, geoelectrical, hydrochemical, and microbiological studies were executed in the Wadi Hof area, southeastern Cairo, Egypt to delineate causes of landslides along train pathway between eastern camp western clay quarry. The area under consideration is a gentle slope from east west. Eocene limestone rocks constitute most common outcrops. Structurally, investigated was affe...
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