Multi-hop relaying in cellular networks can greatly increase capacity and performance by exploiting the best available links to a base station. We envision an environment in which relay networks are dynamically formed when performance on the radio access network is degraded and then dissolved when the performance improves or the radio spectrum on which the relay network is operating is reclaime...

This paper presents a co-operation technique of channel assignment (CA) for indoor base stations (BSs). Indoor BSs are most of the time deployed by users in an ad-hoc manner which makes prior network planning by network operators impossible. If the same pool of radio resources (e.g channels) is used by close BSs, co-operation between these BSs is vital for resolving problems such as interferenc...

Assignment model is a powerful operations research techniques that can be used to solve assignment or allocation problem. This study applies the assignment model to the course allocation problem in Nigeria tertiary institution in order to maximize lecturers’ effectiveness. A well-structured questionnaire was used to obtain data from lecturers and solved with Hungarian method. The study revealed...

One of the basic combinatorial optimization problems is the assignment problem that deals with assigning jobs to individuals. In traditional assignment problems, n jobs usually assign to n individuals such that the total cost is minimized or the total profit is maximized. However, in numerous real-life applications, various attributes could be considered in assignment problems while data (obj...

The efficiency of track utilization is one the important factors for train operation in marshalling stations, and it can not only affect turnover trains, but also determine capacity railway stations. This paper presents an optimization method arrival yard a station considering Arrival Break-up Coordination Operation (ABCO). interaction between push trains investigated. First, case crossing runn...

This paper discusses examples, p a r t i c u l a r l y hypo the t i ca ls , t he i r use and generat ion, in legal reasoning. It examines the use of sequences of hypo the t i ca ls .

Cross docking is an efficient and dynamic logistic process that directly transfers goods from a supplier to a customer. This thesis addresses the door assignment and resource management problem with truck time windows constraints for a specific cross dock. The problems are formulated as mixed integer programming (MIP) models. The objective is to minimize the weighted sum of the total travel dis...

In e-commerce fulfilment centres, storage assignment is critical to ensure short response times. To achieve this, many online retailers have moved product dispersion in combination with turnover-based slotting. However, commonly used policies do not fully utilise the historical customer demand information optimise assignment. This paper addresses a comprehensive approach estimate joint effects ...

This paper concerns about energy-efficient broadcasts in mobile ad hoc networks, yet in a model where each station moves on the plane with uniform rectilinear motion. Such restriction is imposed to discern which issues arise from the introduction of movement in the wireless ad hoc networks. Given a transmission range assignment for a set of n stations S, we provide an polynomial O(n2)-time algo...