Abstract: To tackle the dynamic service deployment challenge for fog nodes in intelligent production lines, this paper presents a Lyapunov optimization-based service deployment method. Addressing the ...

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The PARK 1 ® combines a non-contact pachymeter, auto-refractometer and keratometer in one unit. In addition to the objective refraction, the keratometer values and the pachymetry can be determined ...

1 Department of Architectural Engineering, Dongshin University, Naju, Republic of Korea 2 School of Energy and Constructional Engineering, Shandong Huayu University of Technology, Dezhou, Shandong, ...

The formation of a rainbow requires the observer to be between the sun and falling rain, with the rain in front and the sun behind. Sunlight passes from behind the observer, refracts as it enters each ...