نتایج جستجو برای: space resource

تعداد نتایج: 695963  

Journal: :Inf. Process. Lett. 2008
Philippe Moser

We extend Lutz’s resource-bounded measure to probabilistic classes, and obtain notions of resource-bounded measure on probabilistic complexity classes such as BPE and BPEXP. Unlike former attempts, our resource bounded measure notions satisfy all three basic measure properties, that is every singleton {L} has measure zero, the whole space has measure one, and “enumerable infinite unions” of mea...

Journal: :CoRR 2009
Mugurel Ionut Andreica Madalina Ecaterina Andreica Daniel Ardelean

In this paper we present efficient algorithmic solutions for several constrained resource allocation, management and discovery problems. We consider new types of resource allocation models and constraints, and we present new geometric techniques which are useful when the resources are mapped to points into a multidimensional feature space. We also consider a resource discovery problem for which...

Journal: :Acta Astronautica 2021

Space resource utilization (SRU) can be a catalyst for growing space economy. Significant reductions in cost, launch mass and risk human robotic activities beyond Earth achieved. Commercial entities will have the opportunity to generate revenue through economic development, allowing decreased dependency on governmental agencies exploration of space. A wide variety materials found planetary smal...

Journal: :Surveys in Geophysics 2023

Abstract Africa is particularly vulnerable to climate change impacts, which threatens food security, ecosystem protection and restoration initiatives, fresh water resources availability quality. Groundwater largely contributes the mitigation of effects by offering short- long-term transient storage. However, groundwater storage remains extremely difficult monitor. In this paper, we review stren...

2005
Yunpeng Xing Jie Liu Xiaoping Sun Erlin Yao

The Semantic Link Network model SLN and Resource Space Model RSM are semantic models proposed separately for effectively specifying and managing versatile resources across the Internet. Collaborating the relational semantics of SLN with the classification semantics of the RSM can support richer semantic modeling in applications. This paper introduces the Resource Class Hierarchies into the SLN ...

2011
Cristhian Parra Muhammad Imran Daniil Mirylenka Florian Daniel Fabio Casati Maurizio Marchese

In this paper, we summarize our experience and first results achieved in the context of advanced research evaluation. Striving for research metrics that effectively allow us to predict real opinions about researchers in a variety of scenarios, we conducted two experiments to understand the respective suitability of common indicators, such as the h-index. We concluded that realistic research eva...

Journal: :IJHPCA 2003
Marcio Faerman Adam Birnbaum Francine Berman Henri Casanova

Computational Grids lend themselves well to parameter sweep applications, in which independent tasks calculate results for points in a parameter space. However, it is possible for a parameter space to become so large as to pose prohibitive system requirements. In these cases, user-guided searches promise to reduce overall computation time. In this paper, we address an interesting challenge pose...

2015
Amor A Menezes John Cumbers John A Hogan Adam P Arkin

This paper demonstrates the significant utility of deploying non-traditional biological techniques to harness available volatiles and waste resources on manned missions to explore the Moon and Mars. Compared with anticipated non-biological approaches, it is determined that for 916 day Martian missions: 205 days of high-quality methane and oxygen Mars bioproduction with Methanobacterium thermoau...

2012
J. Andrew Royle Richard B. Chandler

11 1. Understanding space usage and resource selection is a primary focus of many studies 12 of animal populations. Usually, such studies are based on location data obtained from 13 telemetry, and resource selection functions (RSF) are used for inference. Another important 14 focus of wildlife research is estimation and modeling population size and density. Recently 15 developed spatial capture...

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