Packet routing is one of the fundamental problems in computer networks which a router determines next-hop each packet queue to get it as quickly possible its destination. Reinforcement learning (RL) has been introduced design autonomous policies with local information stochastic arrival and service. However, curse dimensionality RL prohibits more comprehensive representation dynamic network sta...

In some real inventory systems, item sales can be adjusted to a stable demand rate along the cycle. For instance, home appliances, electrical products, lounge furniture, water supply, etc., are items with rate. this work, we analyze an system for of type, where is constant. Shortages allowed, and it assumed that fraction during stock-out period backlogged. It supposed shortage costs (backorder ...

it is assumed in most of the existing models that the items can be stored for an unlimited time to meet the future’s demand and their quality and quantity does not change during that period. nevertheless there are special kinds of products which deteriorate or become unusable (such as food products, alcohol, medicines, etc.). therefore if the rate of deterioration is significantly high, the imp...

Environmentally friendly goods are market-oriented that create less environmental damage. Their manufacture is related to a product development process designed consider the consequences might develop throughout their life cycle. In reality, global demand for herbal expanding since products manufactured from plant extracts such as leaves, roots, flowers, and seeds, among others, cause destructi...

This paper explores a production inventory model considering two high-tech products of the same kind. One is primary product and other updated version that product. Due to continuous development in technology, life-cycle some products, like, smartphone, tablet, laptop, etc. have become shorter. We witness launching new more frequently this field. prompts manufacturers release an or pro their ex...

Exchange of crucial and confidential information leads to the unprecedented attention on the security problem in wireless networks. Though the security has been studied in a number of works, the joint optimization of the physical layer security and the end-to-end delay management, which requires a meticulous cross-layer design, has seldom been evaluated. In this work, by combining the tools fro...

Packet scheduling methods that approximate Generalized Processor Sharing (GPS) are currently the focus of much research in the area of Quality-of-Service (QoS) networks. The ability of GPS schedulers to provide rate guarantees as well as delay guarantees meets the demand of many network applications. This paper addresses a shortcoming of GPS which has been given little attention, however, which...

Packet scheduling methods that approximate Generalized Processor Sharing (GPS) are currently the focus of much research in the area of Quality-of-Service (QoS) networks. The ability of GPS schedulers to provide rate guarantees as well as delay guarantees meets the demand of many network applications. This paper addresses a shortcoming of GPS which can have signiicant impact on the service provi...

We analyze the problem of buffer sizing for backlogged TCP flows in 802.11based wireless mesh networks. Our objective is to maintain high network utilization while providing low queueing delays. Unlike wired networks where a single link buffer feeds a bottleneck link, the radio spectral resource in a mesh network is shared among a set of contending mesh routers. We account for this by formulati...

This paper considers a two-echelon distribution system which consists of a single warehouse serving N (possibly non-identical) retailers that face discrete stochastic demand of the customers. The warehouse orders from an exogenous supplier with ample stock. Orders arrive at the warehouse after a fixed leadtime. The warehouse satisfies, if possible, the replenishment requests from the retailers....