This paper reports regional drainage patterns observed during the development of surface drainage maps from aerial photographs of sev­ eral counties in Indiana. This drainage mapping is a part of the current highway research program at Purdue University. The airphotos used in this work were taken during 1937-1943 in connection with the United States Department of Agriculture map program. The pr...

1 This paper introduces the development of a dynamic parallel algorithm for conducting 2 hydrological model simulations. This new algorithm consists of a river network 3 decomposition method and an enhanced master-slave paradigm. The decomposition 4 method is used to divide a basin river network into a large number of subbasins, and the 5 enhanced master-slave paradigm is adopted to realize the...

Intel Threading Building Blocks (TBB) is an ideal environment for implementation of the parallel dynamic programming design pattern. The task-based parallelism of TBB readily lends itself to the realization of the participants and participant collaboration of this design pattern. We propose the parallel dp algorithm template, an implementation of the parallel dynamic programming design pattern ...

We present ice velocities observed with global positioning systems and TerraSAR-X/TanDEM-X in a land-terminating region of the southwest Greenland ice sheet (GrIS) during the melt year 2012–2013, to examine the spatial pattern of seasonal and annual ice motion. We find that while spatial variability in the configuration of the subglacial drainage system controls ice motion at short timescales, ...

Mobile user data mining focuses on finding useful and interesting knowledge out from raw data collected from mobile users. Frequency pattern and location dependent mobile user data mining are among the algorithm used in this field. Parallel pattern, our previous proposed method, extracts how a group of mobile users makes similar decisions, such as by moving towards the similar direction, or by ...

The Manager-Workers pattern is an architectural pattern for parallel programming, used when a design problem can be understood in terms of activity parallelism. This pattern proposes a solution in which the same operations are performed simultaneously and independently on different pieces of data. Operations carried out by each component are independent of operations by other components.

Software adaptation is a promising approach to building flexible interfaces for variable software systems. In this contribution we present a novel adapter modeling approach. The key idea is to split the adapter model into two parts. The first, the static adapter model, addresses the most usual adaptations in an easy way. The second, the dynamic adapter model, may be used for complex behavioral ...

An Activity Parallelism Architectural Pattern for Parallel Programming Jorge L. Ortega-Arjona Departamento de Matemáticas, Facultad de Ciencias, UNAM México, D.F. 01000, México [email protected] Abstract The Shared Resource pattern is an architectural pattern for parallel programming used when a design problem can be understood in terms of activity parallelism. This pattern proposes a solu...

In this paper, we develop a novel algorithm that allows service consumer agents to automatically select and provision service provider agents for their workflows in highly dynamic and uncertain computational service economies. In contrast to existing work, our algorithm reasons explicitly about the impact of failures on the overall feasibility of a workflow, and it mitigates them by proactively...