We consider the following budgeted online assignment (BOA) problem motivated by crowdsourcing. We are given a set of offline tasks that need to be assigned to workers who come online from the pool of types {1, 2, . . . , n}. For a given time horizon {1, 2, . . . , T}, at each instant of time t, a worker j arrives from the pool in accordance with a known probability distribution [pjt] such that ...

In this paper, we present an adaptive relay assignment and power allocation algorithm in cognitive radio networks is proposed by using cooperative relay technologies which can improve the capacity of the cognitive system and extend coverage area. This algorithm converges faster than classic algorithms. The main target of the adaptive algorithm is to maximize each user’s capacity while guarantee...

With increasing competition in the business world and the emergence and development of new technologies, many companies have turned to integrated production and distribution for timely production and delivery at the lowest cost of production and distribution and with the least delay in delivery. By increasing human population and the increase in greenhouse gas emissions and industrial waste, in...

Cell formation problem mainly address how machines should be grouped and parts be processed in cells. In dynamic environments, product mix and demand change in each period of the planning horizon. Incorporating such assumption in the model increases flexibility of the system to meet customer’s requirements. In this model, to ensure the reliability of the system in presence of unreliable machine...

In this assignment, you will become familiar with the MIPS integer and floating point pipelines. You will create a cycle-accurate simulator of an in-order MIPS processor, called mipsim, that supports 32-bit integer and floating point operations. Your simulator will be very basic: it will model all the necessary pipeline interlocks to enforce correct pipeline execution, but it will not support o...

one of the important issues in transportation and logistics systems is vehicle routing problem (vrp). the vehicle routing problem is concerned with finding efficient routes of minimum total cost, beginning and ending at a central depot, for a fleet of vehicles to serve a number of customers. on the other hand, as a result of the increasing environmental concerns, economic problems and pressure ...

The economic lot and delivery scheduling problem for a multi-stage supply chain comprising multiple items is studied in this paper. It is required to develop a synchronized replenishment strategy, and specify the sequence of production and the replenishment cycle time that achieves synchronization through the supply chain at minimum cost. The problem is presented in a novel formulation based on...