2 research outputs found
VyuĹľitĂ tenchnologie GRID pĹ™i zpracovánĂ medicĂnskĂ© informace
Práce se soustĹ™edĂ na vybranĂ© oblasti biomedicĂnskĂ©ho vĂ˝zkumu, kterĂ© mohou profitovat ze souÄŤasnĂ˝ch vĂ˝poÄŤetnĂch infrastruktur vybudovanĂ˝ch ve vÄ›deckĂ© komunitÄ› v evropskĂ©m a svÄ›tovĂ©m prostoru. Teorie vĂ˝poÄŤtu, paralelismu a distribuovanĂ©ho poÄŤĂtánĂ je struÄŤnÄ› uvedena s ohledem na poÄŤĂtánĂ v gridech a cloudech. Práce se zabĂ˝vá oblastĂ vĂ˝mÄ›ny medicĂnskĂ˝ch snĂmkĹŻ a pĹ™edstavuje propojenĂ GridovĂ©ho PACS systĂ©mu s existujĂcĂmi distribuovanĂ˝mi systĂ©my pro sdĂlenĂ DICOM snĂmkĹŻ. Práce se dál zaměřuje na studium vÄ›dy tĂ˝kajĂcĂ se lidskĂ©ho hlasu. Práce pĹ™edstavuje vzdálenĂ˝ zpĹŻsob pĹ™Ăstupu k aplikaci pro analĂ˝zu hlasu v reálnĂ©m ÄŤase pomocĂ Ăşpravy protokolĹŻ pro vzdálenou plochu a pro pĹ™enos zvukovĂ˝ch nahrávek. Tento dĂlÄŤĂ vĂ˝sledek ukazuje moĹľnost vyuĹľitĂ stávajĂcĂch aplikacĂ na dálku specialisty na hlas. Oblast lidskĂ© fyziologie a patofyziologie byla studována pomocĂ pĹ™Ăstupu tzv. systĂ©movĂ© biologie. Práce pĹ™ispĂvá v oblasti metodologie modelovánĂ lidskĂ© fyziologie pro tvorbu komplexnĂch modelĹŻ zaloĹľenĂ˝ch na akauzálnĂm a objektovÄ› orientovanĂ©m modelovacĂm pĹ™Ăstupu. Metody pro studium parametrĹŻ byly pĹ™edstaveny pomocĂ technologie poÄŤĂtánĂ v gridech a v cloudech. Práce ukazuje, Ĺľe proces identifikaci parametrĹŻ stĹ™ednÄ› komplexnĂch modelĹŻ kardiovasculárnĂho systĂ©mu a komplexnĂho modelu lidskĂ© fyziologie lze vĂ˝znamnÄ› zrychlit...This thesis focuses on selected areas of biomedical research in order to benefit from current computational infrastructures established in scientific community in european and global area. The theory of computation, parallelism and distributed computing, with focus on grid computing and cloud computing, is briefly introduced. Exchange of medical images was studied and a seamless integration of grid-based PACS system was established with the current distributed system in order to share DICOM medical images. Voice science was studied and access to real-time voice analysis application via remote desktop technology was introduced using customized protocol to transfer sound recording. This brings a possibility to access current legacy application remotely by voice specialists. The systems biology approach within domain of human physiology and pathophysiology was studied. Modeling methodology of human physiology was improved in order to build complex models based on acausal and object-oriented modeling techniques. Methods for conducting a parameter study (especially parameter estimation and parameter sweep) were introduced using grid computing and cloud computing technology. The identification of parameters gain substantial speedup by utilizing cloud computing deployment when performed on medium complex models of...nezaĹ™azenĂ_neaktivnĂFirst Faculty of Medicine1. lĂ©kaĹ™ská fakult
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Supervised Design-Space Exploration
Low-cost Very Large Scale Integration (VLSI) electronics have revolutionized daily life and expanded the role of computation in science and engineering. Meanwhile, process-technology scaling has changed VLSI design to an exploration process that strives for the optimal balance among multiple objectives, such as power, performance, and area, i.e. multi-objective Pareto-set optimization. Besides, modern VLSI design has shifted to synthesis-centric methodologies in order to boost the design productivity, which leads to better design quality given limited time and resources. However, current decade-old synthesis-centric design methodologies suffer from: (i) long synthesis tool runtime, (ii) elusive optimal setting of many synthesis knobs, (iii) limitation to one design implementation per synthesis run, and (iv) limited capability of digesting only component-level designs as opposed to holistic system-wide synthesis. These challenges make Design Space Exploration (DSE) with synthesis tools a daunting task for both novice and experienced VLSI designers, thus stagnating the development of more powerful (i.e. more complex) computer systems.
To address these challenges, I propose Supervised Design-Space Exploration (SDSE), an abstraction layer between a designer and a synthesis tool, aiming to autonomously supervise synthesis jobs for DSE. For system-level exploration, SDSE can approximate a system Pareto set given limited information: only lightweight component characterization is required, yet the necessary component synthesis jobs are discovered on-the-fly in order to compose the system Pareto set. For component-level exploration, SDSE can approximate a component Pareto set by iteratively refining the approximation with promising knob settings, guided by synthesis-result estimation with machine-learning models. Combined, SDSE has been applied with the three major synthesis stages, namely high-level, logic, and physical synthesis, to the design of heterogeneous accelerator cores as well as high-performance processor cores. In particular, SDSE has been successfully integrated into the IBM Synthesis Tuning System, yielding 20% better circuit performance than the original system on the design of a 22nm server processor that is currently in production.
Looking ahead, SDSE can be applied to other VLSI designs beyond the accelerator and the programmable cores. Moreover, SDSE opens several research avenues for: (i) new development and deployment platforms of synthesis tools, (ii) large-scale collaborative design engineering, and (iii) new computer-aided design approaches for new classes of systems beyond VLSI chips