Neurons rely on a unique organization of their cytoskeleton to build, maintain and transform extraordinarily intricate shapes. After decades research the neuronal cytoskeleton, it is exciting that novel assemblies are still discovered thanks progress in cellular imaging methods. Indeed, super-resolution microscopy has revealed axons lined with periodic scaffold actin rings, spaced every 190 nm ...

In this paper, the periodic, quasi periodic and chaotic responses of rotational machines with a hexagonal centrifugal governor are studied. The external disturbance is assumed as a sinusoid effect. By using the forth order Rung-Kutta numerical integration method, bifurcation diagram, largest Lyapunov exponent and Lyapunov dimension are calculated and presented to detect the critical controlling...

In this paper, we consider a single-item periodic-review stochastic inventory system with both minimum order quantity (MOQ) and batch ordering requirements. In each time period, the firm can order either none or at least as much as the MOQ. At the same time, if an order is placed, the order quantity is required to be an integral multiple of a given specific batch size. We first adopt a heuristi...

We present a Markovian model of a single rm engaging in a periodic review inventory policy to procure goods from two alternate suppliers. Each supplier quotes a state-dependent minimum order quantity, maximum order quantity, and unit price. The purchasing rm faces state-dependent unit inventory holding costs, as well as backorder/penalty costs if they are unable to immediately satisfy their cus...

we prove that each normal automorphism of the $n$-periodic product of cyclic groups of odd order $rge1003$ is inner, whenever $r$ divides $n$.

In this paper we study time-periodic solutions to advection-diffusion equations of a scalar quantity u on a periodically moving n-dimensional hypersurface Γ(t) ⊂ Rn+1. We prove existence and uniqueness of solutions in suitable Hölder spaces.

The joint replenishment problem has been extensively studied and the strategy adopted by a large variety of retailers in recent years. However, under minimum order quantity other constraints does not receive sufficient attention. This paper analyzes retailing supply chain involving supplier that provides discount schedules limits quantity. include requirements for each item as to total quantity...

Typically, many of the modern buildings have concrete walls constructed from cinder block walls, that have periodic nature in their relative dielectric constant. This periodic nature excites higher-order Floquet harmonic modes at microwave frequencies, which leads to the propagation of scattered waves along with non-specular directions. Periodic structures exhibit different behaviors when illum...

The demand pattern for most perishable products varies during their life cycle in the market. These variations must be properly reflected in inventory management in order to prevent unnecessary stock-out or excess inventory with associated increase in cost. In this paper, a multi-period economic order quantity (EOQ) model for managing the inventory of perishable items having varying demand patt...

In this paper, an inventory model for two-stage supply chain is investigated. A supply chain with single vendor and single buyer is considered. We assume that shortage as a backorder is allowed for the buyer and the vendor makes the production set up every time the buyer places an order and supplies on a lot for lot basis. With these assumptions, the joint economic lot size model is introduced ...