aBstraCt In this document it is analyzed the importance of contracts for coordination between two companies in a supply chain. In the studied situation, one company, or supplier, supplies one product to the other company, who is a retailer. The companies are going to coordinate by two types of decisions: economic (concerning prices fixed on a contract), and physical exchange (concerning the inv...

Introduction Newly developed ‘body-in-the-loop’ optimization algorithms have the potential to dramatically improve the performance of robotic assistive devices, such as prostheses and exoskeletons. These algorithms minimize a physiological cost function (e.g., energy expenditure) over a range of parameter values (e.g., controller timing) to determine the optimal parameter setting [1]. Successfu...

Abstract The prevalence of inexpensive global navigation satellite system (GNSS) chips that facilitate the performance carrier phase measurements has provided hardware can be used as foundation for implementing precise point positioning (PPP) low-cost smartphones. However, because atmospheric delays and high measurement noise associated with low-quality patch antennae, convergence time...

We consider an overloaded multi-server multi-class queueing model where customers may abandon while waiting to be served. For class i, service is provided at rate μi , and abandonment occurs at rate θi . In a many-server fluid regime, we show that prioritizing the classes in decreasing order of ciμi/θi asymptotically minimizes an ergodic holding cost, where ci denotes the equivalent holding cos...

In the current global market, organizations use many promotional tools to increase their sales. One such tool is sales teams’ initiatives or promotional policies, i.e., free gifts, discounts, packaging, etc. This phenomenon motivates the retailer/or buyer to order a large inventory lot so as to take full benefit of promotional policies. In view of this the present paper considers a two-warehous...

extensive research has been devoted to economic production quantity (epq) problem. however, little atten-tion has been paid to problems where depreciation cost and process quality cost must be considered, simulta-neously. in this paper, we consider the economic production quantity model of minimizing the annual total cost subject to depreciation cost and process quality cost, where depreciation...

Optimization models are necessary for efficient and cost-effective maintenance of a road network. In this regard, road deterioration is commonly modeled as a discrete-time Markov process such that an optimal maintenance policy can be obtained based on the Markov decision process, or as a renewal process such that an optimal maintenance policy can be obtained based on the renewal theory. However...

Corresponding Author: Rakesh Prakash Tripathi Department of Mathematics Graphic Era University, Dehradun, India Email: [email protected] Abstract: In real life customers are motivated to buy more if there is more availability of product. In this study, we develop inventory model for inventory dependent demand with different holding cost function. Mathematical formulations are discu...

In this paper, an inventory model for an item is presented with inflation and stock dependent demand under non-instantaneous deterioration without allowing shortages. In real life conditions, freshness and quality ofsome products can be maintaining Here in this inventory model we assume that some products maintain originality for some time. The necessary and sufficient conditions are used to fi...