as the information carried in a high spatial resolution image is not represented by single pixels but by meaningful image objects, which include the association of multiple pixels and their mutual relations, the object based method has become one of the most commonly used strategies for the processing of high resolution imagery. this processing comprises two fundamental and critical steps towar...

We present an extension of the Kármám-Howarth theorem to the Lagrangian averaged magnetohydrodynamic (LAMHD−α) equations. The scaling laws resulting as a corollary of this theorem are studied in numerical simulations, as well as the scaling of the longitudinal structure function exponents indicative of intermittency. Numerical simulations are presented both for freely decaying and for forced tw...

Insatiable demands for performance and the availability of inexpensive microprocessors have led to the development of multiprocessor-based systems. Passionate debates amongst architects, designers, and vendors continue to rage regarding cost effective multiprocessor design alternatives. Hypes and claims of performance and scalability are confusing and often misleading. Increasing performance an...

In this paper we reflect on our experiences in a project where academic researchers and social change organizations are working together to explore how participatory and co-design practices can be disseminated and spread within the ‘third sector’. The research project is itself co-designed and co-produced, but within various constraints arising from research funding models. We explore both our ...

This paper discusses the key role that impact evaluations should play in scaling up. Credible impact evaluations are needed to ensure that the most effective programs are scaled up at the national or international levels. Scaling up is possible only if a case can be made that programs that have been successful on small scale would work in other contexts. Therefore, the very objective of scaling...

This paper presents a heterogeneous multiscale method with efficient interscale coupling for scaledependent phenomena modeled via a hierarchy of partial differential equations. Physics at the global level is governed by one set of partial differential equations, whereas features in the solution that are beyond the resolution capability of the coarser models are accounted for by the next refined...

One of the important phenomena in magnetically-confined fusion plasma is plasma turbulence, which causes particle and heat transport and degrades plasma confinement. To address multi-scale turbulence including temporal and spatial scales of electrons and ions, we extend our gyrokinetic Vlasov simulation code GKV to run efficiently on peta-scale supercomputers. A key numerical technique is the p...

The promise of learning analytics is that they will enable us to understand and optimize learning and the environments in which it takes place. The intention is to develop models, algorithms, and processes that can be widely used. In order to do this, we need to move from smallscale research within our disciplines towards large-scale implementation across our institutions. This is a tough chall...

Plan recognition is the task of determining what a person is doing based on a partial view of their behavior. For example, a plan recognizer might observe a computer user executing a sequence of ls, cd, and compress commands in a Unix shell and infer that the computer user is compressing all large les that she owns. Plan recognition is often studied in domains in which people's behavior is char...

Health systems all over Latin America and the Caribbean are suffering the consequences of a lack of organization and planning for the increase in the demand for—and use of— services. The advent of a new infectious disease undermines already limited capacity to ensure access to quality care for everyone according to established standards. Few governments in the region have managed to implement t...