A complete and accurate analysis of the complex spatial structure of heterogeneous hydrocarbon reservoirs requires detailed geological models, i.e. fine resolution models. Due to the high computational cost of simulating such models, single resolution up-scaling techniques are commonly used to reduce the volume of the simulated models at the expense of losing the precision. Several multi-scale ...

Communication devices such as 60GHz-band receivers and serial links demand power-efficient low-resolution gigahertz-sampling-rate ADCs. However, the energy efficiency of ADCs is degraded by scaling up transistor widths in the building blocks for high speed, thus increasing the impact of intrinsic parasitics. Parallel schemes like multi-bit processing and interleaving [1], can ease the problems ...

Correspondence: [email protected] Department of Computer Science, University of Illinois at Urbana-Champaign, USA Full list of author information is available at the end of the article Abstract ChaNGa is an N-body cosmology simulation application implemented using Charm++. In this paper, we present the parallel design of ChaNGa and address many challenges arising due to the high dynamic ran...

Multi-document summarization (MDS) systems have been designed for short, unstructured summaries of 10-15 documents, and are inadequate for larger document collections. We propose a new approach to scaling up summarization called hierarchical summarization, and present the first implemented system, SUMMA. SUMMA produces a hierarchy of relatively short summaries, in which the top level provides a...

In this paper, we outline a method for constructing nonnegative scaling vectors on the interval. Scaling vectors for the interval have been constructed in [1–3]. The approach here is different in that the we start with an existing scaling vector Φ that generates a multi-resolution analysis for L(R) to create a scaling vector for the interval. If desired, the scaling vector can be constructed so...

There are many problems in existing reconstruction-based super-resolution algorithms, such as the lack of texture-feature representation and of high-frequency details. Multi-scale detail enhancement can produce more texture information and high-frequency information. Therefore, super-resolution reconstruction of remote-sensing images based on adaptive multi-scale detail enhancement (AMDE-SR) is...

Abstract Context Land-cover class definitions are scale-dependent. Up-scaling categorical data must account for that dependence, but most decision rules aggregating do not produce scale-specific definitions. However, non-hierarchical, empirically derived classification systems common in phytosociology define classes using species co-occurrence patterns. Objectives Evaluate tradeoffs precision a...

Immersive virtual environments require large-scale high resolution displays to match the human visual acuity. This drives the need to study scalability issues related to display wall systems. This paper reports our experiences in scaling up the display wall system at Princeton University from 8 to 24 projectors. We discuss scalability techniques for automatic projector calibration, cluster mana...