Search results for " computing"
showing 10 items of 2075 documents
A Distributed approach to the Remote Control and Programming Improvement
2006
The remote control of industrial plants through networks is becoming very important nowadays but it involves several issues that can degrade the performance and usability of the remote plant. This paper presents a distributed architecture improving a remote programming system which allows users to control and to program a plant remotely. The control system is based on a client/server architecture with many user interfaces that control the plant. The remote programming language is a mix of Java and client/server protocol in order to simplify the developing and to avoid the protocol/language translation. In order to obtain more efficiency, the program is developed in the client side and it is…
Migration Techniques in HPC Environments
2014
Process migration is an important feature in modern computing centers as it allows for a more efficient use and maintenance of hardware. Especially in virtualized infrastructures it is successfully exploited by schemes for load balancing and energy efficiency. One can divide the tools and techniques into three groups: Process-level migration, virtual machine migration, and container-based migration.
Scalable Monitoring System for Clouds
2013
Although cloud computing has become an important topic over the last couple of years, the development of cloud-specific monitoring systems has been neglected. This is surprising considering their importance for metering services and, thus, being able to charge customers. In this paper we introduce a monitoring architecture that was developed and is currently implemented in the EASI-CLOUDS project. The demands on cloud monitoring systems are manifold. Regular checks of the SLAs and the precise billing of the resource usage, for instance, require the collection and converting of infrastructure readings in short intervals. To ensure the scalability of the whole cloud, the monitoring system mus…
Unified computing facility design based on open source software
2012
The article describes e-infrastructure development in Latvia and migration to national Cloud as regional partner facility (RPF) in European Union (EU). In Latvia many public and private Computing Clouds is in operation and problem is how to integrate these resources as one RPF and how to design one unified computing facility that is used for many different applications. The authors offer their solution at Cloud software as a Service and Hardware as a Service level which is based on usage of open source packaged bundles.
Convolutional Neural Network With Shape Prior Applied to Cardiac MRI Segmentation.
2019
In this paper, we present a novel convolutional neural network architecture to segment images from a series of short-axis cardiac magnetic resonance slices (CMRI). The proposed model is an extension of the U-net that embeds a cardiac shape prior and involves a loss function tailored to the cardiac anatomy. Since the shape prior is computed offline only once, the execution of our model is not limited by its calculation. Our system takes as input raw magnetic resonance images, requires no manual preprocessing or image cropping and is trained to segment the endocardium and epicardium of the left ventricle, the endocardium of the right ventricle, as well as the center of the left ventricle. Wit…
3D grafikas atveidošana reālā laikā ar Vulkan API
2017
Maģistra darba mērķis veikt pētījumu par dažādām 3D grafikas atveidošanas iespējām uz mūsdienu datoriem, fokusējoties uz Vulkan programmsaskarni (turpmāk API), apskatot tās stiprās un vājas puses kā arī atšķirības no alternatīvām. Līdz šim tirgu ir dominējušas 2 API, lai izmantotu videokartes grafisko procesoru (turpmāk GPU) grafikas atveidošanai – OpenGL un DirectX. Tā kā mūsdienās 3D grafikas detalizācija un sarežģītība ir augoša, ir nepieciešami jauni risinājumi, kas precīzāk atbilst mūsdienu datoru arhitektūrai un ierīču daudzveidībai, kā arī dotu izstrādātājiem lielāku kontroli pār visiem notiekošajiem aprēķinu procesiem. Darba ietvaros ir izstrādāti divi 3D grafikas dzinēji. Vienā ir …
Future Processor Hardware Architectures for the Benefit of Precise Particle Accelerator Modeling
2017
Jaunās procesoru arhitektūras, kā grafiskie procesori (GPU) un Intel Many Integrated Cores (MIC) procesori, sniedz milzīgu veiktspējas potenciālu augstas veiktspējas skaitļošanas aplikācijās. Tomēr izstrādājot programmatūru, kas spēj izmantot šīs jaunās tehnoloģijas ir jāsaskarās ar dažādiem papildus grūtībām. Programmām ir jāspēj izmantot papildus paralēlisms, ko piedāvā šīs iekārtās, tām ir jāspēj pielāgoties dažādām procesoru arhitektūrām un jāizmanto dažādas izstrādes platformas, lai aplikācija spēdu darboties uz iekārtām no dažādiem ražotājiem. Dynamic Kernel Scheduler (DKS) tika izstrādāts, lai nodrošinātu papildus programmatūras slāni starp programmu un papildus processoriem. DKS nod…
Etude numérique d'équations aux dérivées partielles non linéaires et dispersives
2011
Numerical analysis becomes a powerful resource in the study of partial differential equations (PDEs), allowing to illustrate existing theorems and find conjectures. By using sophisticated methods, questions which seem inaccessible before, like rapid oscillations or blow-up of solutions can be addressed in an approached way. Rapid oscillations in solutions are observed in dispersive PDEs without dissipation where solutions of the corresponding PDEs without dispersion present shocks. To solve numerically these oscillations, the use of efficient methods without using artificial numerical dissipation is necessary, in particular in the study of PDEs in some dimensions, done in this work. As stud…
Essential Enabling Technologies
2016
The previous chapter contained presentations of several relevant collaboration methods. Section 3.1 indicated that the evolution in e-collaboration was associated with a number of technological breakthroughs.
Emotional Business Intelligence
2014
The domain of Emotional Business Intelligence (EBI) aims to support business-relevant emotional and emotion-aware decisions in addition to rational decision making. EBI originates from three root domains: Emotional Business, Emotional Intelligence and Business Intelligence (BI). In this paper we emphasize emotional empowerment of the traditional BI function; outline its main characteristics as a business working model of an emotionally smart, continuously learning organization; and introduce a first candidate of the EBI Toolkit, the FeelingsExplorer (FE). FE is a mash-up browser based on 4i (“ForEye”) technology, capable of visualizing objects in an emotional semantic space and thereby supp…