In this paper a stochastic model is used to analyse the matching process between skills demand and supply in a segmented labor market. We find the steady state solution of the dynamic system and we address the issue of the necessary conditions for the existence of a steady state and for the...

The general aim of this article is to present genetic algorithms as a tool, that can be used in de-mand forecasting in internet shops. First part of article identities factors, which have to be taken into consideration during analysing demand in internet shops, e.g. dispersion of demand,...

In this article research in area of inventory control in Polish internet shops is presented. The first part of this article shows the results of studies on demand forecasting methods most commonly used by online shops. The second part presents a comprehensive analysis of replenishment strategies...

In this paper we consider the classical newsvendor model with profit maximization. When demand is fully observed in each period and follows either the Rayleigh or the exponential distribution, appropriate estimators for the optimal order quantity and the maximum expected profit are established...

This paper considers the classical Newsvendor model, also known as the Newsboy problem, with the demand to be fully observed and to follow in successive inventory cycles one of the Exponential, Rayleigh, and Log-Normal distributions. For each distribution, appropriate estimators for the optimal...

This article concerns the subject of demand forecasting and stocks status planning in online shops. One described the ways of materials management and setting the groups of most important products. The second part of the article contains the analysis of surveys results. They were conducted in...

The objective of the study is to determine the factors of the optimal level of merchandizing inventory. The study is based on a mathematical model. The results revealed some interesting findings. The most important conclusion is that the 'Usage of Material' or the Sales Volume is not the real...

The study presents a model based on 3,375 observations from industrial firms in Pakistan, and the Three-Stage Least Square (3SLS) technique has been applied for the estimation. The results indicate that the Economic Order Quantity (EOQ) of inventories is not a constant magnitude; it is a variable...

This article presents a model of ABC analysis tailored for internet shops. The standard set of criteria is expanded to cover e-commerce specific characteristics, such as the number of product views, search engine rankings and product links via a recommendation system..The proposed new...

Most organizations can manage reverse logistics operations strategically but very few of them have successfully streamlined material flow of the return process and information due to lack of integration within the overall process. This research aims at analysing complete reverse logistics...