In this paper, a pseudopolynomial time algorithm is presented for solving the integral time-dependent quickest flow problem (TDQFP) and its multiple source and sink counterparts: the time-dependent evacuation and quickest transshipment problems. A more widely known, though less general version, is the quickest flow problem (QFP). The QFP has historically been defined on a dynamic network, where...

While the broad purpose of this research is to provide an improved understanding of general state policy innovation, we develop and test a model of policy innovation which examines the factors that influence the probability of a state restructuring its electric utility policies. The results of our model of electric restructuring generally support our hypotheses and more broadly the literature r...

This study evaluates five representative linear explicit finite difference schemes for solving the energy transport equation in district heating networks (DHN). Specifically for the QUICKEST scheme a robust modification to the original formulation is proposed which overcomes the problem originating from different flow situations at pipe junctions. All methods were put into the versatile state s...

In this paper, we resolve the ever-present confusion over QUICK scheme: it is a second-order scheme or third-order scheme. The scheme, as proposed in original reference [B. P. Leonard, Comput. Methods. Appl. Mech. Eng., 19, (1979), 59-98], (not second-order) finite-volume for integral form of general nonlinear conservation law with point-valued solutions stored at cell centers numerical solutio...

Up to now, research on speed-up techniques for DIJKSTRA’s algorithm focused on single-criteria scenarios. The goal was to find the quickest route within a transportation network. However, the quickest route is often not the best one. A user might be willing to accept slightly longer travel times if the cost of the journey is less. A common approach to cope with such a situation is to find Paret...

A compressible non-body conformal grid method is presented. The method is designed to simulate a large variety of subsonic compressible flows with complex geometries. A hybrid implicit-explicit timediscretization scheme is chosen. The diagonal viscous terms are treated implicitly and all other terms including the convective terms and cross-terms are treated explicitly using a low-storage, 3-Ord...

Thailand is one of the world’s leaders of rice producers and exporters. Farmers have to increase the rice cultivation frequency for serving the national increasing of export’s demand. It leads to an elimination of rice residues by open burning which is the quickest and costless management method. The open burning of rice residue is one of the major causes of air pollutants and greenhouse gas (G...

In this study, the general transport equation was subjected to discretization by using the central difference, upwind, hybrid, power-law, exponential scheme and QUICK scheme methods and then solved by using a program prepared in Delphi programming software. In the solution, three different grid systems of 80x100, 160x200 and 320x400 from nodal points were used. The numerical results obtained fo...

Change detection (CD) in time series data is a critical problem as it reveal changes in the underlying generative processes driving the time series. Despite having received significant attention, one important unexplored aspect is how to efficiently utilize additional correlated information to improve the detection and the understanding of changepoints. We propose hierarchical quickest change d...