Product returns from market to the manufacturer can happen because of the motivation to capture the value content of the product after use or the obligation from legislation and the environmental concerns. A manufacturing system capable of integrating both the manufacturing and remanufacturing activities can help the recovery of value content in the products after the end of product’s use life....

In this paper we analyze a given production network in view of stability, which means boundedness of the state of the network over time. By a mathematical point of view we will model the system by differential equations. This results in the derivation of conditions for which the production network is stable.

The energies at geometries close to the equilibrium for the eBeO and eLiF ground states were computed by means of diffusion Monte Carlo simulations. These results allow us to predict the equilibrium geometries and the vibrational frequencies for these exotic systems, and to discuss their stability with respect to the various dissociation channels. Since the adiabatic positron affinities were fo...

objective: investigations were carried out to isolate bacteria from saline-alkali soils and determined optimized alkaline protease activity and stability produced by a wild strain of bacillus sp. in submerged fermentation (smf). methods: optimum temperature for enzyme activity in the crude extract was 40 ◦c at a ph between 8.0 and 9.0. the studies on ph stability showed that the enzyme was stab...

The size and concentration of exhaled particles may influence respiratory infection transmission risk. We assessed variation in exhaled particle production between individuals, factors associated with high production and stability over time. We measured exhaled particle production during tidal breathing in a sample of 79 healthy volunteers, using optical particle counter technology. Repeat meas...

This paper studies the effect of decoupling on optimal investment in agriculture assuming disinvestment flexibility. Agricultural income being determined by policy processes is subject to policy uncertainty. Case study examples suggest that assuming disinvestment flexibility, decoupling increases income stability, and a higher level of investments can be achieved even with lower subsides. Incre...

Microtubules are a primary cytoskeletal constituent of axons and growth cones. In addition to serving as a scaffolding for axon assembly, they also provide a means of transport of organelles that are essential for outgrowth and maintenance of synaptic function. Pharmacological manipulations that disrupt net assembly of microtubules also interfere with growth cone advance and axon extension. Les...

Designs of new forms of matter composed of nucleons (neutrons, protons), electrons, and other nuclear particles are detailed. This matter is measured in the femtometer (10 -15 m) scale (―femtotechnology‖), which is millions of times smaller than material on the nanometer (10 -9 m) scale (―nanotechnology‖). These new femto-needles, femto-tubes have extraordinary properties such as tensile streng...

In this article, we propose a new way to improve master production schedule (MPS) stability under conditions of finite capacity. The purpose is to optimize product availability and customer service for typical situations encountered in the consumer goods industry. Using a comprehensive MPS model, we conduct a simulation study with experimental design to identify factors having a significant inf...

Robust scheduling aims at the construction of a schedule that is protected against uncertain events. A stable schedule is a robust schedule that changes only little when variations in the input parameters arise. This paper presents a model for single-machine scheduling with stability objective and a common deadline. We propose a branch-andbound algorithm for solving an approximate formulation o...