Relevant bibliographies by topics / Computational grids (Computer systems)

Academic literature on the topic 'Computational grids (Computer systems)'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 March 2023

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Journal articles on the topic "Computational grids (Computer systems)"

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Jie, Wei, Tianyi Zang, Terence Hung, Stephen J. Turner, and Wentong Cai. "Information Management for Computational Grids." International Journal of Web Services Research 2, no. 3 (July 2005): 69–82. http://dx.doi.org/10.4018/jwsr.2005070103.

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Xu, Lin, Yong-Hong Tang, Wei Pu, and Yang Han. "Hybrid electromechanical-electromagnetic simulation to SVC controller based on ADPSS platform." Journal of Energy in Southern Africa 25, no. 4 (December 19, 2014): 112–22. http://dx.doi.org/10.17159/2413-3051/2014/v25i4a2244.

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To test the dynamic performance and damping features of a static var compensator (SVC) controller accurately in large-scale interconnected AC/DC hybrid power systems, it is of vital significance to build the detailed electromagnetic transient model. However, it is unrealistic and time-consuming to build the detailed models of all the devices in the actual large-scale power grid. Utilizing the hybrid simulation function in the advanced digital power system simulator (ADPSS) and by dividing the large-scale power grid into the electromagnetic transient sub-grids and electromechanical sub-grids, the computation speed of real-time simulation is remarkably enhanced by the parallel computational capabilities of digital simulator. The SVC controller and the nearby substation are modelled in the electromagnetic transient sub-grid, and the residue sub-networks are modelled in the electromechanical sub-grid. This paper focuses on the mechanism of the hybrid electromechanical and electromagnetic simulation, the detailed modelling and the ADPSS-based digital closed-loop test methodologies of the SVC controller. Eventually, the validity and effectiveness of the modelling and control methods are confirmed by the experimental results.
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PREVE, NIKOLAOS P., and EMMANUEL N. PROTONOTARIOS. "MONTE CARLO SIMULATION ON COMPUTATIONAL FINANCE FOR GRID COMPUTING." International Journal of Modeling, Simulation, and Scientific Computing 03, no. 03 (May 17, 2012): 1250010. http://dx.doi.org/10.1142/s1793962312500109.

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Monte Carlo methods are a class of computational algorithms that rely on repeated random sampling to compute their results. Monte Carlo methods are often used in simulating complex systems. Because of their reliance on repeated computation of random or pseudo-random numbers, these methods are most suited to calculation by a computer and tend to be used when it is infeasible or impossible to compute an exact result with a deterministic algorithm. In finance, Monte Carlo simulation method is used to calculate the value of companies, to evaluate economic investments and financial derivatives. On the other hand, Grid Computing applies heterogeneous computer resources of many geographically disperse computers in a network in order to solve a single problem that requires a great number of computer processing cycles or access to large amounts of data. In this paper, we have developed a simulation based on Monte Carlo method which is applied on grid computing in order to predict through complex calculations the future trends in stock prices.
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ARNOLD, DORIAN C., SATHISH S. VAHDIYAR, and JACK J. DONGARRA. "ON THE CONVERGENCE OF COMPUTATIONAL AND DATA GRIDS." Parallel Processing Letters 11, no. 02n03 (June 2001): 187–202. http://dx.doi.org/10.1142/s012962640100052x.

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Great advances in high-performance computing have given rise to scientific applications that place large demands on software and hardware infrastructures for both computational and data services. With these trends the necessity has emerged for distributed systems developers that once distinguished between these elements to acknowledge that indeed computational and data services are tightly coupled and need to be addressed simultaneously. In this article, we compile and discuss several strategies and techniques, like co-scheduling and co-allocation of computational and data services, dynamic storage capabilities, and quality-of-service, that can be used to help resolve some of the aforementioned issues. We present our interactions with a distributed computing system, NetSolve, and a Distributed Storage Infrastructure, IBP, as a case study of how some of these techniques can be effectively deployed and offer experimental evidence from early prototypes that validate our motivation and direction.
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Huang, Sili, Eric Aubanel, and Virendrakumar C. Bhavsar. "PaGrid: A Mesh Partitioner for Computational Grids." Journal of Grid Computing 4, no. 1 (February 1, 2006): 71–88. http://dx.doi.org/10.1007/s10723-005-9018-0.

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Darwish, M., H. Diab, and F. Moukalled. "An Educational Two-Dimensional Interactive Dynamic Grid Generator." International Journal of Mechanical Engineering Education 24, no. 4 (October 1996): 279–90. http://dx.doi.org/10.1177/030641909602400406.

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This paper describes IDGG, an Interactive Dynamic Grid Generator, for use as an educational tool by students studying computational fluid dynamics. The package is a Windows applications and runs on IBM PC, or compatible, computers. It is written in Pascal and built using object-oriented programming. The computer program allows the user to generate boundary-fitted curvilinear grids in any two-dimensional domain. The procedure adopted requires the user to perform the transformation step by step allowing him/her to easily grasp the concept of boundary-fitted coordinate systems. In addition, IDGG may be used by CFD researchers to display results graphically in the form of vector fields, contours, and two- and three-dimensional plots. The examples provided show the effectiveness of the package as a teaching aid.
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Röhlig, Martin, Ruby Kala Prakasam, Jörg Stüwe, Christoph Schmidt, Oliver Stachs, and Heidrun Schumann. "Enhanced Grid-Based Visual Analysis of Retinal Layer Thickness with Optical Coherence Tomography." Information 10, no. 9 (August 23, 2019): 266. http://dx.doi.org/10.3390/info10090266.

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Optical coherence tomography enables high-resolution 3D imaging of retinal layers in the human eye. The thickness of the layers is commonly assessed to understand a variety of retinal and systemic disorders. Yet, the thickness data are complex and currently need to be considerably reduced prior to further processing and analysis. This leads to a loss of information on localized variations in thickness, which is important for early detection of certain retinal diseases. We propose an enhanced grid-based reduction and exploration of retinal thickness data. Alternative grids are computed, their representation quality is rated, and best fitting grids for given thickness data are suggested. Selected grids are then visualized, adapted, and compared at different levels of granularity. A visual analysis tool bundles all computational, visual, and interactive means in a flexible user interface. We demonstrate the utility of our tool in a complementary analysis procedure, which eases the evaluation of ophthalmic study data. Ophthalmologists successfully applied our solution to study localized variations in thickness of retinal layers in patients with diabetes mellitus.
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Wei, Guiyi, Yun Ling, Athanasios V. Vasilakos, Bin Xiao, and Yao Zheng. "PIVOT: An adaptive information discovery framework for computational grids." Information Sciences 180, no. 23 (December 2010): 4543–56. http://dx.doi.org/10.1016/j.ins.2010.07.022.

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Jeong, Se-Min, and Chang-Yull Lee. "Weighted Moving Square-Based Solver for Unsteady Incompressible Laminar Flow Simulations." Applied Sciences 12, no. 7 (March 30, 2022): 3519. http://dx.doi.org/10.3390/app12073519.

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For computational fluid dynamics simulations, grid systems are generally used in the Eulerian frame for both structured and unstructured grids and solvers designed for the chosen grid systems. In contrast to the grid-based method, in which the connection information with neighboring grids must be maintained, gridless methods do not require an underlying connectivity in the form of control volumes or elements. Hence, gridless methods are feasible and robust for the problems with moving boundary and/or complicated boundary shapes. In this study, a Eulerian gridless solver is proposed, and its application for simulating two-dimensional unsteady viscous flows in low Reynolds number regions is investigated. The solver utilizes the weighted moving square method to obtain the spatial derivatives of the governing equations and solve the pressure Poisson equation iteratively. Simple remedies to satisfy the boundary conditions in the finite difference method are applied. The fractional step method with the second-order Adams–Bashforth method is used for time integration. Some benchmark problems were solved using the developed solver, and the results were compared with those of other experimental and computational methods. Good agreement with the results of other methods confirmed the validity of the proposed solver.
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Rahman, Ashiqur Md, and Rashedur M. Rahman. "CAPM Indexed Hybrid E-Negotiation for Resource Allocation in Grid Computing." International Journal of Grid and High Performance Computing 5, no. 2 (April 2013): 72–91. http://dx.doi.org/10.4018/jghpc.2013040105.

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Computational Grids are a promising platform for executing large-scale resource intensive applications. This paper identifies challenges in managing resources in a Grid computing environment and proposes computational economy as a metaphor for effective management of resources and application scheduling. It identifies distributed resource management challenges and requirements of economy-based Grid systems, and proposes an economy based negotiation system protocol for cooperative and competitive trading of resources. Dynamic pricing for services and good level of Pareto optimality make auctions more attractive for resource allocation over other economic models. In a complex Grid environment, the communication demand can become a bottleneck; that is, a number of messages need to be exchanged for matching suitable service providers and consumers. The Fuzzy Trust integrated hybrid Capital Asset Pricing Model (CAPM) shows the higher user centric satisfaction and provides the equilibrium relationship between the expected return and risk on investments. This paper also presents an analysis on the communication requirements and the necessity of the CAPMAuction in Grid environment.
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Dissertations / Theses on the topic "Computational grids (Computer systems)"

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Chen, Lin. "Process migration and runtime scheduling for parallel tasks in computational grids." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38574172.

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Chen, Lin, and 陳琳. "Process migration and runtime scheduling for parallel tasks in computational grids." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38574172.

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Muranganwa, Raymond. "Design and implementation of a multi-agent opportunistic grid computing platform." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2722.

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Opportunistic Grid Computing involves joining idle computing resources in enterprises into a converged high performance commodity infrastructure. The research described in this dissertation investigates the viability of public resource computing in offering a plethora of possibilities through seamless access to shared compute and storage resources. The research proposes and conceptualizes the Multi-Agent Opportunistic Grid (MAOG) solution in an Information and Communication Technologies for Development (ICT4D) initiative to address some limitations prevalent in traditional distributed system implementations. Proof-of-concept software components based on JADE (Java Agent Development Framework) validated Multi-Agent Systems (MAS) as an important tool for provisioning of Opportunistic Grid Computing platforms. Exploration of agent technologies within the research context identified two key components which improve access to extended computer capabilities. The first component is a Mobile Agent (MA) compute component in which a group of agents interact to pool shared processor cycles. The compute component integrates dynamic resource identification and allocation strategies by incorporating the Contract Net Protocol (CNP) and rule based reasoning concepts. The second service is a MAS based storage component realized through disk mirroring and Google file-system’s chunking with atomic append storage techniques. This research provides a candidate Opportunistic Grid Computing platform design and implementation through the use of MAS. Experiments conducted validated the design and implementation of the compute and storage services. From results, support for processing user applications; resource identification and allocation; and rule based reasoning validated the MA compute component. A MAS based file-system that implements chunking optimizations was considered to be optimum based on evaluations. The findings from the undertaken experiments also validated the functional adequacy of the implementation, and show the suitability of MAS for provisioning of robust, autonomous, and intelligent platforms. The context of this research, ICT4D, provides a solution to optimizing and increasing the utilization of computing resources that are usually idle in these contexts.
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Shi, Benyun. "A concurrent negotiation mechanism for grid resource co-allocation." HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/937.

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Ng, Ka Fung. "Designing and implementing relaxed-criteria G-negotiation agents." HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/938.

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Chen, Jinjun. "Towards effective and efficient temporal verification in grid workflow systems." Australasian Digital Thesis Program, 2007. http://adt.lib.swin.edu.au/public/adt-VSWT20070424.112326/index.html.

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Thesis (Ph.D) - Swinburne University of Technology, Faculty of Information & Communication Technologies, Centre for Information Technology Research, 2007.
A thesis to CITR - Centre for Information Technology Research, Faculty of Information and Communication Technologies, Swinburne University of Technology, for the degree of Doctor of Philosophy, 2007. Typescript. Bibliography p. 145-160.
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Gandhi, Bhavin B. "On the coverage of grid information dissemination protocols." Diss., Online access via UMI:, 2005.

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Erdil, Değer Cenk. "Adaptive dissemination protocols for hybrid grid resource scheduling." Diss., Online access via UMI:, 2007.

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Kalyanasundaram, Anand Kumar. "Service based marketplace for applications." Master's thesis, Mississippi State : Mississippi State University, 2003. http://library.msstate.edu/etd/show.asp?etd=etd-11072003-110358.

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Stokes-Rees, Ian. "A REST model for high throughput scheduling in computational grids." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442954.

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Current grid computing architectures have been based on cluster management and batch queuing systems, extended to a distributed, federated domain. These have shown shortcomings in terms of scalability, stability, and modularity. To address these problems, this dissertation applies architectural styles from the Internet and Web to the domain of generic computational grids. Using the REST style, a flexible model for grid resource interaction is developed which removes the need for any centralised services or specific protocols, thereby allowing a range of implementations and layering of further functionality. The context for resource interaction is a generalisation and formalisation of the Condor ClassAd match-making mechanism. This set theoretic model is described in depth, including the advantages and features which it realises. This RESTful style is also motivated by operational experience with existing grid infrastructures, and the design, operation, and performance of a proto-RESTful grid middleware package named DIRAC. This package was designed to provide for the LHCb particle physics experiment’s “off-line” computational infrastructure, and was first exercised during a 6 month data challenge which utilised over 670 years of CPU time and produced 98 TB of data through 300,000 tasks executed at computing centres around the world. The design of DIRAC and performance measures from the data challenge are reported. The main contribution of this work is the development of a REST model for grid resource interaction. In particular, it allows resource templating for scheduling queues which provide a novel distributed and scalable approach to resource scheduling on the grid.
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Books on the topic "Computational grids (Computer systems)"

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Computational and data grids: Principles, applications, and design. Hershey, PA: Information Science Reference, 2012.

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Jarek, Nabrzyski, Schopf Jennifer M, and Węglarz Jan, eds. Grid resource management: State of the art and future trends. Boston: Kluwer Academic Publishers, 2004.

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1959-, Foster Ian, and Kesselman Carl, eds. The grid: Blueprint for a new computing infrastructure. 2nd ed. Amsterdam: Morgan Kaufmann, 2004.

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Richard, Wellner, ed. Grid computing: The savvy manager's guide. San Francisco: Elsevier/Morgan Kaufmann, 2005.

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Azarenok, B. N. O postroenii podvizhnykh adaptivnykh prostranstvennykh setok. Moskva: Vychislitelʹnyĭ t︠s︡entr im. A.A. Dorodnit︠s︡yna RAN, 2007.

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Magoulès, F. Fundamentals of grid computing: Theory, algorithms, and technologies. Boca Raton: Chapman & Hall/CRC, 2009.

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Magoulès, F. Fundamentals of grid computing: Theory, algorithms and technologies. Boca Raton: Chapman & Hall/CRC, 2009.

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International Business Machines Corporation. International Technical Support Organization, ed. Introduction to grid computing with Globus. 2nd ed. [Poughkeepsie, N.Y.]: IBM Corporation, International Technical Support Organization, 2003.

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Magoulès, F. Fundamentals of grid computing: Theory, algorithms and technologies. Boca Raton: Chapman & Hall/CRC, 2009.

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1959-, Foster Ian, and Kesselman Carl, eds. The grid: Blueprint for a new computing infrastructure. San Francisco: Morgan Kaufmann Publishers, 1999.

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Book chapters on the topic "Computational grids (Computer systems)"

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Azab, Abdulrahman, and Hein Meling. "A Virtual File System Interface for Computational Grids." In Lecture Notes in Computer Science, 87–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13971-0_9.

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Waheed, Abdul, Warren Smith, Jude George, and Jerry Yan. "An Infrastructure for Monitoring and Management in Computational Grids." In Languages, Compilers, and Run-Time Systems for Scalable Computers, 235–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-40889-4_18.

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Sukhinov, Alexander, Vladimir Litvinov, Alexander Chistyakov, Alla Nikitina, Natalia Gracheva, and Nelli Rudenko. "Computational Aspects of Solving Grid Equations in Heterogeneous Computing Systems." In Lecture Notes in Computer Science, 166–77. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86359-3_13.

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Martínez, D. R., J. L. Albín, J. C. Cabaleiro, T. F. Pena, and F. F. Rivera. "A Load Balance Methodology for Highly Compute-Intensive Applications on Grids Based on Computational Modeling." In On the Move to Meaningful Internet Systems 2005: OTM 2005 Workshops, 327–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11575863_52.

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Turchenko, Volodymyr. "Computational Grid vs. Parallel Computer for Coarse-Grain Parallelization of Neural Networks Training." In On the Move to Meaningful Internet Systems 2005: OTM 2005 Workshops, 357–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11575863_55.

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Petcu, Dana, Diana Dubu, and Marcin Paprzycki. "Towards a Grid-Aware Computer Algebra System." In Computational Science - ICCS 2004, 490–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24685-5_73.

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Foster, Ian. "High-Performance Computational Grids." In High Performance Computing Systems and Applications, 17–18. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5611-4_3.

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Katramatos, Dimitrios, Marty Humphrey, Andrew Grimshaw, and Steve Chapin. "JobQueue: A Computational Grid-Wide Queuing System." In Lecture Notes in Computer Science, 99–110. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45644-9_10.

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Chen, Xiaolin, Chang Yang, Sanglu Lu, and Guihai Chen. "An Active Resource Management System for Computational Grid." In Lecture Notes in Computer Science, 225–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-30208-7_35.

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Abdalhaq, Baker, Ana Cortés, Tomás Margalef, and Emilio Luque. "Evolutionary Optimization Techniques on Computational Grids." In Lecture Notes in Computer Science, 513–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-46043-8_52.

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Conference papers on the topic "Computational grids (Computer systems)"

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Abdelkader, K., J. Broeckhove, and Kurt Vanmechelen. "Commodity resource pricing in dynamic computational grids." In 2008 IEEE/ACS International Conference on Computer Systems and Applications (AICCSA). IEEE, 2008. http://dx.doi.org/10.1109/aiccsa.2008.4493568.

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Aziz, Abdul, and Hesham El-Rewini. "Workflow scheduling in computational grids: Opportunistic vs. planned." In 2008 IEEE/ACS International Conference on Computer Systems and Applications (AICCSA). IEEE, 2008. http://dx.doi.org/10.1109/aiccsa.2008.4493545.

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Ilic, Marija D. "DYMONDS computer platform for smart grids." In 2014 Power Systems Computation Conference (PSCC). IEEE, 2014. http://dx.doi.org/10.1109/pscc.2014.7038476.

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Xhafa, Fatos, Bernat Duran, Ajith Abraham, and Keshav P. Dahal. "Tuning Struggle Strategy in Genetic Algorithms for Scheduling in Computational Grids." In 2008 7th Computer Information Systems and Industrial Management Applications (CISIM). IEEE, 2008. http://dx.doi.org/10.1109/cisim.2008.54.

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Abdelkader, K., J. Broeckhove, and Kurt Vanmechelen. "Economic-based resource management for dynamic computational grids: Extension to substitutable CPU resources." In 2009 IEEE/ACS International Conference on Computer Systems and Applications. IEEE, 2009. http://dx.doi.org/10.1109/aiccsa.2009.5069288.

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SMITH, MERRITT, and JANI PALLIS. "MEDUSA - An overset grid flow solver for network-based parallel computer systems." In 11th Computational Fluid Dynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-3312.

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Gundy-Burlet, Karen L., Man Mohan Rai, R. Charles Stauter, and Robert P. Dring. "Temporally and Spatially Resolved Flow in a Two-Stage Axial Compressor: Part 2 — Computational Assessment." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-299.

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Fluid dynamics of turbomachines are complicated because of aerodynamic interactions between rotors and Stators. It is necessary to understand the aerodynamics associated with these interactions in order to design turbomachines that are both light and compact as well as reliable and efficient. The current study uses an unsteady, thin-layer Navier-Stokes zonal approach to investigate the unsteady aerodynamics of a multistage compressor. Relative motion between rotors and stators is made possible by the use of systems of patched and overlaid grids. Results have been computed for a 2½-stage compressor configuration. The numerical data compare well with experimental data for surface pressures and wakes. In addition, the effect of grid refinement on the solution is studied.
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Cartes, David, Joe H. Chow, Dan McCaugherty, Steve Widergren, and G. Kumar Venayagamoorthy. "The IEEE Computer Society Smart Grid Vision Project opens opportunites for computational intelligence." In 2013 IEEE Conference on Evolving and Adaptive Intelligent Systems (EAIS). IEEE, 2013. http://dx.doi.org/10.1109/eais.2013.6604117.

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Efkolidis, Nikolaos, Prodromos Minaoglou, Kyriaki Aidinli, and Panagiotis Kyratsis. "Computational design used for jewelry." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p60.

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Nowadays more and more computer-aided technologies and computational techniques are applied to product design. Jewelry belongs to those products. Jewelry is considered as part of human civilization and adopted to human’s needs. In recent years, computational design is applied in order to overcome the limitations of traditional CAD systems, when reaching an increased level of complexity and geometrical controls. Computational design supports the evolution of creative design and develops models as a form of the computational exploration. Furthermore, additive manufacturing (AM) pieces of equipment are widely used to create models and prototype parts in various applications. AM plays an important role, when developing jewelry models, as it is utilized with an aim to produce high-quality models in rather reduced numbers and complex shapes. In the current paper, a computer-based design tool was applied in order to develop algorithms for the generation of new artistic forms for the design of a set of jewelry. Then, Stereolithography (SLA) technique is chosen for the prototype models construction.
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Kyratsis, Panagiotis, Kyriaki Aidinli, Prodromos Minaoglou, and Lazaros Firtikiadis. "Computational interior design based on 2D patterns." In 11th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design, 2022. http://dx.doi.org/10.24867/grid-2022-p1.

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Modelling with 3D CAD (Computer Aided Design) tools has reached a point that its complexity is difficult to be controlled without the use of programming tools. Both general purpose CAD systems and specialized CAD pieces of software allow their programming with textual or visual interface. The designer is offered with a variety of tools in order to automate the design process and handle its geometrical complexity. The present paper deals with the use of CAD based visual programming for product designers, who want to use unusual geometries based on 2D patterns and present their work to the final user using high-end rendering images. The proposed designs can be customized to a great extend and contribute towards their increased added value. At the same time, a family of products can be presented, when the design parameters used get alternative values.
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Reports on the topic "Computational grids (Computer systems)"

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Angevine, Colin, Karen Cator, Jeremy Roschelle, Susan A. Thomas, Chelsea Waite, and Josh Weisgrau. Computational Thinking for a Computational World. Digital Promise, 2017. http://dx.doi.org/10.51388/20.500.12265/62.

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Computers, smartphones, smart systems, and other technologies are woven into nearly every aspect of our daily lives. As computational technology advances, it is imperative that we educate young people and working adults to thrive in a computational world. In this context, the essential question for American education is: In a computational world, what is important to know and know how to do? This paper argues that computational thinking is both central to computer science and widely applicable throughout education and the workforce. It is a skillset for solving complex problems, a way to learn topics in any discipline, and a necessity for fully participating in a computational world. The paper concludes with recommendations for integrating computational thinking across K-12 curriculum.
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Castro, Carolina Robledo, Piedad Rocio Lerma-Castaño, and Luis Gerardo Pachón-Ospina. Rehabilitation programs based on computational systems: effects in the executive functions in young and middle adulthood: A scoping review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, October 2022. http://dx.doi.org/10.37766/inplasy2022.10.0052.

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Review question / Objective: To identify empirical studies that measured the feasibility and effect of computer-based executive function stimulation and rehabilitation programs in the young and middle adult population. Background: Reviews that evaluate the effectiveness of computerized cognitive training programs on executive functions in different population groups have shown contradictory results, to a certain extent associated with the methodological characteristics of said studies (Gates et al., 2019; 2020); most of them These reviews have focused on older adults (Ten Brinke et al., 2020; Yoo et al., 2015) with stroke sequelae, and adults with cognitive impairment. These studies have found improvements in general cognitive function in older adults (Ten Brinke et al., 2020); however, the effect on executive functions have not been studied. Only one review was carried out on the average adult (Gates et al., 2019); the authors restricted the search to interventions with more than 12 weeks and only found one article with eligibility criteria. Their work concluded that computerized cognitive training in midlife demonstrated lasting effects on general cognitive function after 12 weeks of training and on memory after 24 weeks of training.
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3

Wu, Yingjie, Selim Gunay, and Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, November 2020. http://dx.doi.org/10.55461/ytgv8834.

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Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining functionality in the aftermath of moderate to strong earthquakes, referred to as “resiliency” in earthquake engineering research. Moreover, the associated construction philosophy is being modernized with the utilization of accelerated bridge construction (ABC) techniques, which strive to reduce the impact of construction on traffic, society, economy and on-site safety. This report presents two bridge systems that target the aforementioned issues. A study that combined numerical and experimental research was undertaken to characterize the seismic performance of these bridge systems. The first part of the study focuses on the structural system-level response of highway bridges that incorporate a class of innovative connecting devices called the “V-connector,”, which can be used to connect two components in a structural system, e.g., the column and the bridge deck, or the column and its foundation. This device, designed by ACII, Inc., results in an isolation surface at the connection plane via a connector rod placed in a V-shaped tube that is embedded into the concrete. Energy dissipation is provided by friction between a special washer located around the V-shaped tube and a top plate. Because of the period elongation due to the isolation layer and the limited amount of force transferred by the relatively flexible connector rod, bridge columns are protected from experiencing damage, thus leading to improved seismic behavior. The V-connector system also facilitates the ABC by allowing on-site assembly of prefabricated structural parts including those of the V-connector. A single-column, two-span highway bridge located in Northern California was used for the proof-of-concept of the proposed V-connector protective system. The V-connector was designed to result in an elastic bridge response based on nonlinear dynamic analyses of the bridge model with the V-connector. Accordingly, a one-third scale V-connector was fabricated based on a set of selected design parameters. A quasi-static cyclic test was first conducted to characterize the force-displacement relationship of the V-connector, followed by a hybrid simulation (HS) test in the longitudinal direction of the bridge to verify the intended linear elastic response of the bridge system. In the HS test, all bridge components were analytically modeled except for the V-connector, which was simulated as the experimental substructure in a specially designed and constructed test setup. Linear elastic bridge response was confirmed according to the HS results. The response of the bridge with the V-connector was compared against that of the as-built bridge without the V-connector, which experienced significant column damage. These results justified the effectiveness of this innovative device. The second part of the study presents the HS test conducted on a one-third scale two-column bridge bent with self-centering columns (broadly defined as “resilient columns” in this study) to reduce (or ultimately eliminate) any residual drifts. The comparison of the HS test with a previously conducted shaking table test on an identical bridge bent is one of the highlights of this study. The concept of resiliency was incorporated in the design of the bridge bent columns characterized by a well-balanced combination of self-centering, rocking, and energy-dissipating mechanisms. This combination is expected to lead to minimum damage and low levels of residual drifts. The ABC is achieved by utilizing precast columns and end members (cap beam and foundation) through an innovative socket connection. In order to conduct the HS test, a new hybrid simulation system (HSS) was developed, utilizing commonly available software and hardware components in most structural laboratories including: a computational platform using Matlab/Simulink [MathWorks 2015], an interface hardware/software platform dSPACE [2017], and MTS controllers and data acquisition (DAQ) system for the utilized actuators and sensors. Proper operation of the HSS was verified using a trial run without the test specimen before the actual HS test. In the conducted HS test, the two-column bridge bent was simulated as the experimental substructure while modeling the horizontal and vertical inertia masses and corresponding mass proportional damping in the computer. The same ground motions from the shaking table test, consisting of one horizontal component and the vertical component, were applied as input excitations to the equations of motion in the HS. Good matching was obtained between the shaking table and the HS test results, demonstrating the appropriateness of the defined governing equations of motion and the employed damping model, in addition to the reliability of the developed HSS with minimum simulation errors. The small residual drifts and the minimum level of structural damage at large peak drift levels demonstrated the superior seismic response of the innovative design of the bridge bent with self-centering columns. The reliability of the developed HS approach motivated performing a follow-up HS study focusing on the transverse direction of the bridge, where the entire two-span bridge deck and its abutments represented the computational substructure, while the two-column bridge bent was the physical substructure. This investigation was effective in shedding light on the system-level performance of the entire bridge system that incorporated innovative bridge bent design beyond what can be achieved via shaking table tests, which are usually limited by large-scale bridge system testing capacities.
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4

Striuk, Andrii M., and Serhiy O. Semerikov. The Dawn of Software Engineering Education. [б. в.], February 2020. http://dx.doi.org/10.31812/123456789/3671.

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Designing a mobile-oriented environment for professional and practical training requires determining the stable (fundamental) and mobile (technological) components of its content and determining the appropriate model for specialist training. In order to determine the ratio of fundamental and technological in the content of software engineers’ training, a retrospective analysis of the first model of training software engineers developed in the early 1970s was carried out and its compliance with the current state of software engineering development as a field of knowledge and a new the standard of higher education in Ukraine, specialty 121 “Software Engineering”. It is determined that the consistency and scalability inherent in the historically first training program are largely consistent with the ideas of evolutionary software design. An analysis of its content also provided an opportunity to identify the links between the training for software engineers and training for computer science, computer engineering, cybersecurity, information systems and technologies. It has been established that the fundamental core of software engineers’ training should ensure that students achieve such leading learning outcomes: to know and put into practice the fundamental concepts, paradigms and basic principles of the functioning of language, instrumental and computational tools for software engineering; know and apply the appropriate mathematical concepts, domain methods, system and object-oriented analysis and mathematical modeling for software development; put into practice the software tools for domain analysis, design, testing, visualization, measurement and documentation of software. It is shown that the formation of the relevant competencies of future software engineers must be carried out in the training of all disciplines of professional and practical training.
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5

Farhi, Edward, and Hartmut Neven. Classification with Quantum Neural Networks on Near Term Processors. Web of Open Science, December 2020. http://dx.doi.org/10.37686/qrl.v1i2.80.

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We introduce a quantum neural network, QNN, that can represent labeled data, classical or quantum, and be trained by supervised learning. The quantum circuit consists of a sequence of parameter dependent unitary transformations which acts on an input quantum state. For binary classification a single Pauli operator is measured on a designated readout qubit. The measured output is the quantum neural network’s predictor of the binary label of the input state. We show through classical simulation that parameters can be found that allow the QNN to learn to correctly distinguish the two data sets. We then discuss presenting the data as quantum superpositions of computational basis states corresponding to different label values. Here we show through simulation that learning is possible. We consider using our QNN to learn the label of a general quantum state. By example we show that this can be done. Our work is exploratory and relies on the classical simulation of small quantum systems. The QNN proposed here was designed with near-term quantum processors in mind. Therefore it will be possible to run this QNN on a near term gate model quantum computer where its power can be explored beyond what can be explored with simulation.
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