This review paper aims to present an updated review of papers, conference papers, books, dissertations dealing with nonlinear vibrations of circular cylindrical thin shells. This paper surveyed mathematically, experimentally, analytically, numerically analyzed vibrations of cylindrical shells. This includes shells of open type, closed type, with and without fluid interactions; shells subjected ...

Energy conservation is one of the most fundamental and well-established principles physics. E. Noether ‎extended ‎energy principle to quantum field theoretical domain in empty space by ‎relating time-translation ‎invariance universe with energy conservation. While this case ‎an open space, it seems that local ‎space enclosed conducting metallic plates has an ‎unexpected property, suggesting ‎ma...

Max-plus automata are quantitative extensions of automata designed to associate an integer with every non empty word. A pair of distinct words is said to be an identity for a class of max-plus automata if each of the automata in the class computes the same value on the two words. We give the shortest identities holding for the class of max-plus automata with two states. For this, we exhibit an ...

Following the model of Bondesson, Nilsson, and Wikstrand, we consider randomly filled urns, where the probability of falling into urn i is the geometric probability (1− q)qi−1. Assuming n independent random entries, and a fixed parameter k, the interest is in the following parameters: Let T be the smallest index, such that urn T is non-empty, but the following k are empty, then: XT = number of ...

We study classes of minimal sets defined by restrictions on the possible extensions of the words. These sets generalize the previously studied classes of neutral and tree sets by relaxing the condition imposed on the empty word and measured by an integer called the characteristic of the set. We present several enumeration results holding in these sets of words. These formulae concern return wor...

This paper presents an experimental study of imperfection insensitive composite wavy cylindrical shells subject to axial compression. A fabrication technique for making cylindrical shells with intricate shape of cross-sections has been developed. A photogrammetry technique to measure the geometric imperfections has also been developed. The behavior of the wavy shells under axial compression was...

Abstract Agricultural waste resources, such as biomass, can be turned into valuable alternative energy sources. Biomass is critical to achieving renewable in Indonesia. The usage of sources, biofuels (BBN), should increased because the demand for fossil fuel sources increasing year after year, and these fuels are limited expensive. Biomass-derived from palm oil industry form shells empty bunche...