A Maritime Pulp Distribution Problem

Economic disparities among the regions of the European Union are more pronounced than among countries. Structural Funds have played a crucial compensatory role, promoting the economic development and real convergence of lagging regions. The amount of resources destined to regional policy and the conflicts arising from its funding and distribution create the need for an adequate theoretical foundation or model to help politicians solve the distribution problem. In this paper we propose an empirical procedure to carry out and evaluate different distributions of funds for the periods 1989 – 93 and 1994 – 99. We begin with the estimation of an augmented production function to permit the calculation of the expected GDP per capita. We then propose a nonlinear programming method to simulate alternative distributions of Structural Funds among Objective 1 regions, based upon two different approaches: equal development, and equal opportunities. For these two approaches we calculate different possibilities, ranging from highly efficient to highly equitable, with the result that we are able to show the ‘frontier’ of optimal distributions. Finally, we evaluate these results and compare them with the real distribution.

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Research on Optimizing Grain and Oil Distribution Problem Based on VRP-DM

2010 International Conference of Information Science and Management Engineering ◽

10.1109/isme.2010.174 ◽

2010 ◽

Author(s):

Xu Degang ◽

Xiao Renbin

Keyword(s):

Distribution Problem ◽

Oil Distribution

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The Location Problem of Given and Indivisible Different Units

Environment and Planning A Economy and Space ◽

10.1068/a020341 ◽

1970 ◽

Vol 2 (3) ◽

pp. 341-356

Author(s):

G. Jándy

Keyword(s):

Exact Solution ◽

Heuristic Algorithm ◽

Network Flow ◽

Location Problem ◽

Optimal Solution ◽

Type Problem ◽

Distribution Problem ◽

Enumeration Algorithm ◽

Weighted Distribution ◽

Partial Enumeration

In cases where certain simplifications are allowed, the location optimisation of given and indivisible different economic units may be modelled as a bi-value weighted distribution problem. The paper presents a heuristic algorithm for this network-flow-type problem and also a partial enumeration algorithm for deriving the exact solution. But it is also pointed out that an initial sub-optimal solution can quickly be improved with a derivation on a direct line only, if the exact solution is not absolutely essential. A numerical example is used to illustrate the method of derivation on a direct line starting with an upper bound given by a sub-optimal solution.

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Infall models of galaxy evolution: a solution to the redshift distribution problem?

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/263.1.86 ◽

1993 ◽

Vol 263 (1) ◽

pp. 86-92 ◽

Cited By ~ 1

Author(s):

S. Phillipps

Keyword(s):

Galaxy Evolution ◽

Distribution Problem ◽

Redshift Distribution

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Vehicle Stability Control Through Predictive and Optimal Tire Saturation Management

Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies ◽

10.1115/detc2012-71182 ◽

2012 ◽

Author(s):

Justin Sill ◽

Beshah Ayalew

Keyword(s):

Stability Control ◽

Vehicle Stability ◽

Distribution Problem ◽

Scale Separation ◽

Torque Distribution ◽

Hydraulic Hybrid ◽

Time Scale Separation ◽

Vehicle Stability Control ◽

Natural Time ◽

Set Up

This paper presents a predictive vehicle stability control (VSC) strategy that distributes the drive/braking torques to each wheel of the vehicle based on the optimal exploitation of the available traction capability for each tire. To this end, tire saturation levels are defined as the deficiency of a tire to generate a force that linearly increases with the relevant slip quantities. These saturation levels are then used to set up an optimization objective for a torque distribution problem within a novel cascade control structure that exploits the natural time scale separation of the slower lateral handling dynamics of the vehicle from the relatively faster rotational dynamics of the wheel/tire. The envisaged application of the proposed vehicle stability strategy is for vehicles with advanced and emerging pure electric, hybrid electric or hydraulic hybrid power trains featuring independent wheel drives. The developed predictive control strategy is evaluated for, a two-axle truck featuring such an independent drive system and subjected to a transient handling maneuver.

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