Due to the long-term fluid-solid interactions in waterflooding, the tremendous variation of oil reservoir formation parameters will lead to the widespread evolution of preferential flow paths, thereby preventing the further enhancement of recovery efficiency because of unstable fingering and premature breakthrough. To improve oil recovery, the characterization of preferential flow paths is esse...

and become focused. The focused unsaturated flow will increase relative permeability of its path, and cause flow A numerical modeling study is presented to investigate flow– further focusing. Focused flow paths exist in the unsatufocusing phenomena in a large-scale fracture network, constructed rated rock of the Yucca Mountain site. For example, using field data collected from the unsaturated z...

A key problem in reverse engineering executables is to reconstruct the programs’s control flow, i.e., to construct a graph representation of the byte sequences or paths a computer may execute as instructions. Unfortunately, exactly computing all feasible paths of a program is not possible. Therefore, the task of precise control flow reconstruction and disassembly is also not solvable in general...

Self-movement through an environment generates optic flow, a potential source of heading information. But it is not certain that optic flow is sufficient to support navigation, particularly navigation along complex, multi-legged paths. To address this question, we studied human participants who navigated synthetic environments with and without salient optic flow. Participants used a keyboard to...

The quality of teachers prepared for basic education in Africa and other continents of the world is a consequence of the knowledge of content acquired and the pedagogy. Effective teaching practice supervision could determine the level of teacher trainees’ performance in the art of teaching. The study investigated the differences in performance of teacher trainees who embarked on continuous Teac...

flows over time: A first step towards solving dynamic packing problems Jan-Philipp W. Kappmeier, Jannik Matuschke, and Britta Peis TU Berlin, Institut für Mathematik, Straße des 17. Juni 136, 10623 Berlin, Germany {kappmeier,matuschke,peis}@math.tu-berlin.de Preprint 001-2012 (revised version) November 12, 2012 Abstract. Flows over time [4] generalize classical network flows by introducing a no...