Search results for "Cloud"
showing 10 items of 827 documents
Cloud-based interactive susceptibility modeling of gully erosion in Google Earth Engine
2022
The gully erosion susceptibility literature is largely dominated by contributions focused on model comparison. This has led to prioritize certain aspects and leave others underdeveloped as compared to other natural hazard applications. For instance, in gully erosion data-driven modeling most studies use different platforms when it comes to data management, modeling and conversion into predictive maps. This in turn has limited the scope to catchment-scales. In this manuscript, we opt to propose a tool where the whole modeling procedure is unified within the same cloud computing system, allowing one to get rid of potential errors caused by input/output operations but also to extend the study …
The Start of a Journey to the Cloud in the Developing World: A Case Study of Egypt
2015
Cloud computing (CC) is becoming a global market trend that all businesses, sooner or later, will go for. Moving to the cloud is a long journey for developing countries that became aware of its importance to their economic development. Egypt started this journey with collective efforts from all stakeholders (i.e., Government institutes, national and international cloud providers, private businesses, and training institutes) to draw the roadmap for CC adoption in Egypt. CC adoption in Egypt is influenced by some enabling and inhibiting factors. These factors are explored by conducting an exploratory case study. The findings of this study are analyzed by utilizing concepts from the neo-instit…
Digital Platforms for Restructuring the Public Sector
2018
Many technological innovations have led to the emergence of the platform economy in recent years. This development is changing the entire landscape of business in the era of digitalisation. However, the impacts of the platform economy on public services and government are not well known. In this article we study the potential for the digital platform economy to help restructure the public sector. Firstly, central features of the new platform technology are explored, pointing to an algorithmic revolution, big data and cloud computing. Platforms are used in coordinating market transactions in an extremely efficient way. In order to apply the platform concept to the public sector, an experimen…
Achieving Intelligent Traffic-aware Consolidation of Virtual Machines in a Data Center Using Learning Automata
2016
Cloud Computing (CC) is becoming increasingly pertinent and popular. A natural consequence of this is that many modern-day data centers experience very high internal traffic within the data centers themselves. The VMs with high mutual traffic often end up being far apart in the data center network, forcing them to communicate over unnecessarily long distances. The consequent traffic bottlenecks negatively affect both the performance of the application and the network in its entirety, posing nontrivial challenges for the administrators of these cloudbased data centers. The problem can, quite naturally, be compartmentalized into two phases which follow each other. First of all, the VMs are co…
The Gaia-ESO Survey: Dynamics of ionized and neutral gas in the Lagoon nebula (M 8)
2017
Aims. We present a spectroscopic study of the dynamics of the ionized and neutral gas throughout the Lagoon nebula (M 8), using VLT-FLAMES data from the Gaia-ESO Survey. The new data permit exploration of the physical connections between the nebular gas and the stellar population of the associated star cluster NGC 6530. Methods. We characterized through spectral fitting emission lines of Hα, [N II] and [S II] doublets, [O III], and absorption lines of sodium D doublet, using data from the FLAMES-Giraffe and UVES spectrographs, on more than 1000 sightlines toward the entire face of the Lagoon nebula. Gas temperatures are derived from line-width comparisons, densities from the [S II] doublet …
Laboratory unraveling of matter accretion in young stars
2017
When matter accretes onto a young star, a shell of dense material can form around the impact, reducing its x-ray emission.
Sociālo mediju ziņojumu plūsmu pārskata vietne.
2016
Kvalifikācijas darba “Sociālo mediju ziņojumu plūsmu pārskata vietne” mērķis ir izstrādāt tīmekļa vietni, kura spētu palīdzēt, piemēram, kāda pasākuma organizatoram sekot līdzi cilvēku attieksmei un attiecīgi veikt izmaiņas pašreizējā vai nākamajos pasākumos, lai uzlabotu cilvēku labsajūtu un pieredzi. Šī tīmekļa vietne ir pieejama caur tīmekļa pārlūku jebkuram interesantam, taču administratora pieeja tiek atļauta tikai kādai iepriekš definētai cilvēku grupai. Tīmekļa vietnes administrators spēs izveidot jaunu mediju sienu, kurā tiks parādītas dažādas cilvēku sīkziņas atkarībā no administratora izvēlētajiem parametriem sienas izveidošanas brīdī. Sistēmas jebkuram lietotājiem būs iespējams a…
Parallel macro pipelining on the intel SCC many-core computer
2013
In this paper we present how Intel's Single-Chip-Cloud processor behaves for parallel macro pipeline applications. Subsets of the SCC's available cores can be arranged as a pipeline where each core processes one stage of the overall workload. Each of the independent cores processes a small part of a larger task and feeds the following core with new data after it finishes its work. Our case-study is a parallel rendering system which renders successive images and applies different filters on them. On normal graphics adapters this is usually done in multiple cycles, we do this in a single pipeline pass. We show that we can achieve a significant speedup by using multiple parallel pipelines on t…
Overionization in X-ray spectra: a new paradigm for Mixed-Morphology SNRs
2011
Mixed-morphology SNRs are characterized by a shell-like radio emission, a centrally peaked X-ray morphology, and by interaction with molecular clouds. Many models have been proposed to explain these peculiar remnants, but their physical origin is still unclear. The recent discovery of over-ionized (i. e. recombining) ejecta in 3 mixed-morphology SNRs has dramatically challenged all the previous models and opened up new, unexpected scenarios. I review the main properties of these remnants and their peculiar X-ray spectral properties. I also discuss the hydrodynamic model developed to explain the presence of over-ionized ejecta in W49B and present a list of open issues that still need to be c…
The origin of the X-ray-emitting plasma in the eastern edge of the Cygnus Loop
2010
The Cygnus Loop is interacting with a protrusion of the cavity wall in its eastern edge (the XA region), where the X-ray emission is very bright. The complexity of the environment and the non-linear physical processes of the shock-cloud interaction make the origin of the X-ray emission still not well understood. Our purpose is to understand the physical origin of the X-ray emission in the XA region, addressing, in particular, the role of thermal conduction in the interaction process. We analyzed two XMM-Newton data sets, performing image analysis and spatially resolved spectral analysis on a set of homogeneous regions. We applied a recently developed diagnostic tool to compare spectral anal…