Sharif Digital Repository

Assortment planning considers the problem of product classification in order to maximize the profit by considering related constraints. Integrating the assortment planning with inventory management plays an essential role in retail optimization. The importance of integrating these problems is related to customer behavior in substituting the products in case of shortage. The customer checks the availability of products in order of his/her priorities and buys a product if available otherwise leaving the store without purchase if he/she cannot find a product according to his/her preferences. Customer preferences are modeled through the definition of consumer types, where a type is a ranking of... 

In this thesis, the problem of locating a source based on the time difference of arrival (TDOA) has been studied and three different methods have been presented to improve the precision of the positioning. The first method is a solution to the least square error (LSE) by utilizing a convex problem. Generally, the mentioned problem is a non-convex problem; however, it is possible to convert it to a convex one by some relaxation in the constraints. By some justifiable and insightful relaxation, not only we obtain a convex problem, but also the exact solution of the main problem is derived. The second method is using high perturbed TDOA measurements which severely affected the localization.... 

Financial markets have been formed to attract and utilize the community’s funds,. In these markets different securities are supplied to meet the needs of a huge variety of investors. they should know the performance and characteristics of these securities, Otherxise they lost in the market. But most investors aren’t familiar with these securities and for this reason almost withdraw from the market. Funds was made up to solve this problem and facilitate the process of entering these investors in financial markets. In funds, professional managers manage portfolio with the capital provided by investors. Exchange Traded Funds (ETFs) are one type of these funds. The stock of ETFs issued in the... 

In this research, the inventory – routing problem considering discount is studied. The problem consists of a supplier and several retailers who form a network of demand and supply points. In this research, offering discount to retailers is considered as an appropriate policy for reducing total costs of the supply chain. The supplier can augment the utility of her trucks by offering discounts and incentives to the retailers and delivering them amounts of product beyond their economic ordering quantity. This way, the supplier can have full truck-loads instead of lower than full truck-loads while delivering the demands of the retailers. This, can result in a decrease in transportation costs and... 

Sales promotion plays an important role in increasing the profit, attraction, and retention of consumers. Temporary discounts are a popular promotional tactic that is applied in diverse situations. In this study, we examine some situations to determine optimal decisions. In the first scenario, promotions are implemented during predetermined periods, and the seller determines optimal pricing to achieve two separate objectives: maximizing profit and managing demand (clearance sales). We propose generalized inverse optimization models that determine discounted prices to make the given promotion timing as close to optimal as possible. The efficacy of our approach is demonstrated through...