منابع مشابه
A Multi-variable Theta Product
A multi-variable theta product is examined. It is shown that, under very general choices of the parameters, the quotient of two such general theta products is a root of unity. Special cases are explicitly determined. The second main theorem yields an explicit evaluation of a sum of series of cosines, which greatly generalizes one of Ramanujan’s theorems on certain sums of hyperbolic cosines.
متن کاملReliable multi-product multi-vehicle multi-type link logistics network design: A hybrid heuristic algorithm
This paper considers the reliable multi-product multi-vehicle multi-type link logistics network design problem (RMLNDP) with system disruptions, which is concerned with facilities locating, transshipment links constructing, and also allocating them to the customers in order to satisfy their demand on minimum expected total cost (including locating costs, link constructing costs, and also expect...
متن کاملMulti-product exporters, variable markups and exchange rate fluctuations
In this paper we investigate how firms adjust markups across products in response to fluctuations in the real exchange rate. In a theoretical framework, we show that firms increase their markups and producer prices following a real depreciation and that this increase is greater for products with higher productivity, a consequence of local distribution costs. We estimate markups at the market-pr...
متن کاملOn optimization of a Multi-Retailer Multi-Product VMI Model with Variable Replenishment Cycle
This paper discusses how a vendor manages multiple products within its multiple non-identical retailers operating under a vendor managed inventory (VMI) contract that allows unequal shipment frequencies to the retailers. The vendor replenishment cycle for each product is taken to be an integer multiple of the retailer replenishment cycle where vendor is penalized for exceeding the upper stock l...
متن کاملBuilding a Multi-Objective Model for Multi-Product Multi-Period Production Planning with Controllable Processing Times: A Real Case Problem
Model building is a fragile and complex process especially in the context of real cases. Each real case problem has its own characteristics with new concepts and conditions. A correct model should have some essential characteristics such as: being compatible with real conditions, being of sufficient accuracy, being logically traceable and etc. This paper discusses how to build an efficient mode...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Indagationes Mathematicae
سال: 2002
ISSN: 0019-3577
DOI: 10.1016/s0019-3577(02)90002-9