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Artykuły w czasopismach na temat „Modern multi-core systems”

Autor: Grafiati

Data publikacji: 6 września 2023

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1

Bucaioni, Alessio, Saad Mubeen, Federico Ciccozzi, Antonio Cicchetti, and Mikael Sjödin. "Modelling multi-criticality vehicular software systems: evolution of an industrial component model." Software and Systems Modeling 19, no. 5 (2020): 1283–302. http://dx.doi.org/10.1007/s10270-020-00795-5.

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Abstract Software in modern vehicles consists of multi-criticality functions, where a function can be safety-critical with stringent real-time requirements, less critical from the vehicle operation perspective, but still with real-time requirements, or not critical at all. Next-generation autonomous vehicles will require higher computational power to run multi-criticality functions and such a power can only be provided by parallel computing platforms such as multi-core architectures. However, current model-based software development solutions and related modelling languages have not been desig

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Chen, Kuo Yi, Fuh Gwo Chen, and Jr Shian Chen. "A Cost-Effective Hardware Approach for Measuring Power Consumption of Modern Multi-Core Processors." Applied Mechanics and Materials 110-116 (October 2011): 4569–73. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4569.

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Multiple processor cores are built within a chip by advanced VLSI technology. With the decreasing prices, multi-core processors are widely deployed in both server and desktop systems. The workload of multi-threaded applications could be separated to different cores by multiple threads, such that application threads can run concurrently to maximize overall execution speed of the applications. Moreover, for the green trend of computing nowadays, most of modern multi-core processors have a functionality of dynamic frequency turning. The power-level tuning techniques are based on Dynamic Voltage a

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Pryadko, S. A., A. S. Krutogolova, A. S. Uglyanitsa, and A. E. Ivanov. "Multi-core processors use for numerical problems solutions." Radio industry (Russia) 30, no. 4 (2020): 98–105. http://dx.doi.org/10.21778/2413-9599-2020-30-4-98-105.

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Problem statement. The use of programming technologies on modern multicore systems is an integral part of an enterprise whose activities involve multitasking or the need to make a large number of calculations over a certain time. The article discusses the development of such technologies aimed at increasing the speed of solving various issues, for example, numerical modeling.Objective. Search for alternative ways to increase the speed of calculations by increasing the number of processors. As an example of increasing the calculation speed depending on the number of processors, the well-known h

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Burns, Ethan, Seth Lemons, Wheeler Ruml, and Rong Zhou. "Suboptimal and Anytime Heuristic Search on Multi-Core Machines." Proceedings of the International Conference on Automated Planning and Scheduling 19 (October 16, 2009): 42–49. http://dx.doi.org/10.1609/icaps.v19i1.13375.

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In order to scale with modern processors, planning algorithms must become multi-threaded. In this paper, we present parallel shared-memory algorithms for two problems that underlie many planning systems: suboptimal and anytime heuristic search. We extend a recently-proposed approach for parallel optimal search to the suboptimal case, providing two new pruning rules for bounded suboptimal search. We also show how this new approach can be used for parallel anytime search. Using temporal logic, we prove the correctness of our framework, and in an empirical comparison on STRIPS planning, grid path

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Zhao, Huatao, Xiao Luo, Chen Zhu, Takahiro Watanabe, and Tianbo Zhu. "Behavior-aware cache hierarchy optimization for low-power multi-core embedded systems." Modern Physics Letters B 31, no. 19-21 (2017): 1740067. http://dx.doi.org/10.1142/s021798491740067x.

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In modern embedded systems, the increasing number of cores requires efficient cache hierarchies to ensure data throughput, but such cache hierarchies are restricted by their tumid size and interference accesses which leads to both performance degradation and wasted energy. In this paper, we firstly propose a behavior-aware cache hierarchy (BACH) which can optimally allocate the multi-level cache resources to many cores and highly improved the efficiency of cache hierarchy, resulting in low energy consumption. The BACH takes full advantage of the explored application behaviors and runtime cache

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Hanafi Por, Porya Soltani, Abbas Ramazani, and Mojtaba Hosseini Toodeshki. "Temperature and performance evaluation of multiprocessors chips by optimal control method." Bulletin of Electrical Engineering and Informatics 12, no. 2 (2023): 749–59. http://dx.doi.org/10.11591/eei.v12i2.4291.

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Multi-core processors support all modern electronic devices nowadays. However, temperature and performance management are one of the most critical issues in the design of today’s microprocessors. In this paper, we propose a framework by using an optimal control method based on fan speed and frequency control of the multi-core processor. The goal is to optimize performance and at the same time avoid violating an expected temperature. Our proposed method uses a high-precision thermal and power model for multi-core processors. This method is validated on asymmetric ODROID-XU4 multi-core processor

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Chen, Yong Heng, Wan Li Zuo, and Feng Lin He. "Optimization Strategy of Bidirectional Join Enumeration in Multi-Core CPUS." Applied Mechanics and Materials 44-47 (December 2010): 383–87. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.383.

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Most contemporary database systems query optimizers exploit System-R’s Bottom-up dynamic programming method (DP) to find the optimal query execution plan (QEP) without evaluating redundant sub-plans. As modern microprocessors employ multiple cores to accelerate computations, the parallel optimization algorithm has been proposed to parallelize the Bottom-up DP query optimization process. However Top-down DP method can derive upper bounds for the costs of the plans it generates which is not available to typical Bottom-up DP method since such method generate and cost all subplans before consideri

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Sibai, Fadi N., and Ali El-Moursy. "Performance evaluation and comparison of parallel conjugate gradient on modern multi-core accelerator and massively parallel systems." International Journal of Parallel, Emergent and Distributed Systems 29, no. 1 (2013): 38–67. http://dx.doi.org/10.1080/17445760.2012.762774.

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Filman, Robert E., and Paul H. Morris. "Compiling Knowledge-Based Systems to Ada: The PrkAda Core." International Journal on Artificial Intelligence Tools 06, no. 03 (1997): 341–64. http://dx.doi.org/10.1142/s0218213097000190.

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This paper describes the implementation of PrkAda, a system for delivering, in Ada, Artificial Intelligence and object-oriented applications developed using the ProKappa system. (ProKappa is a modern, multi-paradigm knowledge-based–system development tool. It includes facilities for dynamic object management, rule-based processing, daemons, and graphical developer and end-user interfaces. ProKappa is a successor system to KEE.) Creating PrkAda required creating a run-time, Ada-language, object-system "core," and developing a compiler to Ada from ProTalk (ProKappa's high-level, backtracking-bas

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Rudenko, O., I. Domanov, and V. Kravchenko. "TECHNICAL APPROACH IN EVALUATING OF THE CHARACTERISTICS OF MULTI-CORE BALANCED NONQUADDED CABLES FOR DIGITAL COMMUNICATION SYSTEMS." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 4 (August 19, 2020): 107–17. http://dx.doi.org/10.37701/dndivsovt.4.2020.12.

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The article proposes a variant of the technical approach in evaluating of the characteristics of multi-core balanced nonquadded cables for digital communication systems. The list of modern standards of the International Electrotechnical Commission, and also the National standards of Ukraine and the international standards which are created on their basis is presented. The proposed standards define the general requirements for communication cables, offer verifying methods for the design, structural dimensions, and materials of elements, marking and packaging. In addition, the provisions o

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Jamadagni, Nagendra Kumar, Aniruddh M, Dr Govinda Raju M, and Dr Usha Rani K. R. "Comparative Study of Heterogeneous Multicore Scheduling Algorithms on Media Codecs." Journal of University of Shanghai for Science and Technology 23, no. 06 (2021): 840–49. http://dx.doi.org/10.51201/jusst/21/05355.

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All modern-day computers and smartphones come with multi-core CPUs. The multicore architecture is generally heterogeneous in nature to maximize computational throughput. These multicore systems exploit thread-level parallelism to deliver higher performance, but they are limited by the requirement of good scheduling algorithms that maximize CPU utility and minimize wasted and idle cycles. With the rise in streaming services and multimedia capabilities of smartphones, it is necessary to have efficient heterogeneous cores which are capable of performing multimedia processing at a fast pace. It is

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Zhang, Lei, Ren Ping Dong, Chang Zhang, and Ya Ping Yu. "The Design and Implementation of a Heterogeneous Multi-Core Security Chip Architecture Based on Shared Memory System." Applied Mechanics and Materials 668-669 (October 2014): 1314–18. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.1314.

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With the existence of traditional SOC chip, the encryption and decryption speed and low power cannot meet the computing needs of the modern diversity, then we present a heterogeneous multi-core system which designed based on shared memory on the Xilinx Virtex-5 platform. This paper is in-depth research about heterogeneous multi-core password architecture, static task partitioning, scheduling strategy and the communication mechanism between cores. The three cores systems are designed and builded based on shared memory to realize ZUC algorithm which generates a stream cipher on virtex-5 platform

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Alhomssi, Adnan, and Viktor Leis. "Scalable and Robust Snapshot Isolation for High-Performance Storage Engines." Proceedings of the VLDB Endowment 16, no. 6 (2023): 1426–38. http://dx.doi.org/10.14778/3583140.3583157.

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MVCC-based snapshot isolation promises that read queries can proceed without interfering with concurrent writes. However, as we show experimentally, in existing implementations a single long-running query can easily cause transactional throughput to collapse. Moreover, existing out-of-memory commit protocols fail to meet the scalability needs of modern multi-core systems. In this paper, we present three complementary techniques for robust and scalable snapshot isolation in out-of-memory systems. First, we propose a commit protocol that minimizes cross-thread communication for better scalabilit

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Kumar, B., and O. Dikshit. "PARALLEL IMPLEMENTATION OF MORPHOLOGICAL PROFILE BASED SPECTRAL-SPATIAL CLASSIFICATION SCHEME FOR HYPERSPECTRAL IMAGERY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 263–67. http://dx.doi.org/10.5194/isprs-archives-xli-b7-263-2016.

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Extended morphological profile (EMP) is a good technique for extracting spectral-spatial information from the images but large size of hyperspectral images is an important concern for creating EMPs. However, with the availability of modern multi-core processors and commodity parallel processing systems like graphics processing units (GPUs) at desktop level, parallel computing provides a viable option to significantly accelerate execution of such computations. In this paper, parallel implementation of an EMP based spectralspatial classification method for hyperspectral imagery is presented. The

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Kumar, B., and O. Dikshit. "PARALLEL IMPLEMENTATION OF MORPHOLOGICAL PROFILE BASED SPECTRAL-SPATIAL CLASSIFICATION SCHEME FOR HYPERSPECTRAL IMAGERY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 263–67. http://dx.doi.org/10.5194/isprsarchives-xli-b7-263-2016.

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Extended morphological profile (EMP) is a good technique for extracting spectral-spatial information from the images but large size of hyperspectral images is an important concern for creating EMPs. However, with the availability of modern multi-core processors and commodity parallel processing systems like graphics processing units (GPUs) at desktop level, parallel computing provides a viable option to significantly accelerate execution of such computations. In this paper, parallel implementation of an EMP based spectralspatial classification method for hyperspectral imagery is presented. The

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Nikolic, Goran, Bojan Dimitrijevic, Tatjana Nikolic, and Mile Stojcev. "Fifty years of microprocessor evolution: from single CPU to multicore and manycore systems." Facta universitatis - series: Electronics and Energetics 35, no. 2 (2022): 155–86. http://dx.doi.org/10.2298/fuee2202155n.

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Nowadays microprocessors are among the most complex electronic systems that man has ever designed. One small silicon chip can contain the complete processor, large memory and logic needed to connect it to the input-output devices. The performance of today's processors implemented on a single chip surpasses the performance of a room-sized supercomputer from just 50 years ago, which cost over $ 10 million [1]. Even the embedded processors found in everyday devices such as mobile phones are far more powerful than computer developers once imagined. The main components of a modern microprocessor ar

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Dümmler, Jörg, Thomas Rauber, and Gudula Rünger. "Combined Scheduling and Mapping for Scalable Computing with Parallel Tasks." Scientific Programming 20, no. 1 (2012): 45–67. http://dx.doi.org/10.1155/2012/514940.

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Recent and future parallel clusters and supercomputers use symmetric multiprocessors (SMPs) and multi-core processors as basic nodes, providing a huge amount of parallel resources. These systems often have hierarchically structured interconnection networks combining computing resources at different levels, starting with the interconnect within multi-core processors up to the interconnection network combining nodes of the cluster or supercomputer. The challenge for the programmer is that these computing resources should be utilized efficiently by exploiting the available degree of parallelism o

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SOKURENKO, Vyacheslav, Ivan KHUTOROVYI, and Oleg SOKURENKO. "DEVELOPMENT OF OPTICAL SYSTEMS OF 16-LENS ORTHOSCOPIC TELEPHOTO LENSES." Herald of Khmelnytskyi National University. Technical sciences 315, no. 6(1) (2022): 219–23. http://dx.doi.org/10.31891/2307-5732-2022-315-6-219-223.

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In this work, the possibilities of creating multi-lens optical systems of telephoto lenses with a fixed focal length and high image quality with the help of a computer have been experimentally investigated. The effectiveness of the automated procedure for creating new optical systems of orthoscopic telephoto lenses was repeatedly examined. The design procedure utilizes a modified version of the modern stochastic global optimization algorithm. In particular, we carried out the aberration synthesis of several optical systems of 16-lens orthoscopic telephoto lenses having the effective focal leng

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Lehmann, Götz. "Efficient Semi-Lagrangian Vlasov-Maxwell Simulations of High Order Harmonic Generation from Relativistic Laser-Plasma Interactions." Communications in Computational Physics 20, no. 3 (2016): 583–602. http://dx.doi.org/10.4208/cicp.oa-2015-0019.

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AbstractWe describe a relativistic semi-Lagrangian scheme for the numerical solution of the relativistic Vlasov-Maxwell system. The implementation strategy on a modern non-unified memory access (NUMA) architecture using the OpenMP framework is discussed. We demonstrated that close to perfect scaling can be obtained on modern many-core, multi-socket systems. Application of this code to the problem of relativistic generation of high-harmonic laser radiation is demonstrated. The results are compared to particle-in-cell (PIC) simulations, indicating in particular that for warm plasma the Vlasov si

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Attila, Cséki, and Olivera Latković. "Infinity – A New Program for Modeling Binary Systems." Proceedings of the International Astronomical Union 7, S282 (2011): 305–6. http://dx.doi.org/10.1017/s1743921311027633.

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AbstractInfinity is a new program for modeling binary systems. The model is based on Roche geometry with asynchronous rotation, including an assortment of effects like gravity and limb darkening, mutual irradiation, bright and dark spots and so on. However, Infinity brings innovations in the modeling of accretion disks, and introduces the modeling of radial and non-radial oscillations on one or both components of the system.At this stage of development, Infinity can produce light curves, spectra and radial velocity curves; solving the inverse problem is still a work in progress. In terms of pr

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Qiu, Weiming, Yonghao Chen, Dihu Chen, Tao Su, and Simei Yang. "Run-Time Hierarchical Management of Mapping, Per-Cluster DVFS and Per-Core DPM for Energy Optimization." Electronics 11, no. 7 (2022): 1094. http://dx.doi.org/10.3390/electronics11071094.

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Heterogeneous cluster-based multi/many-core systems (e.g., ARM big.LITTLE, supporting dynamic voltage and frequency scaling (DVFS) at cluster level and dynamic power management (DPM) at core level) have attracted much attention to optimize energy on modern embedded systems. For concurrently executing applications on such a platform, this paper aims to study how to appropriately apply the three system configurations (mapping, DVFS, and DPM) to reduce both dynamic and static energy. To this end, this paper first formulates the dependence of the three system configurations on heterogeneous cluste

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Saykin, A. M., and S. E. Buznikov. "Principles of building competitive motion control systems for highly automated vehicles." Journal of Physics: Conference Series 2061, no. 1 (2021): 012133. http://dx.doi.org/10.1088/1742-6596/2061/1/012133.

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Abstract The relevance of the issue of development of efficient motion control systems for highly automated vehicles capable to successfully compete with foreign systems of similar purpose is defined by importance of the issue of creation of competitive high-tech products under modern market economy conditions. The research objective was to scientifically justify the building principles for motion control systems for highly automated vehicles providing directed search for solution options for the issue of multi-criterion optimization in the software and hardware space. The research involved me

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Karavay, M. F., and A. M. Mikhailov. "Design of local heterogeneous system control networks of a new generation with the preservation of the optimality of the main topological functionals of the network." Journal of Physics: Conference Series 2091, no. 1 (2021): 012038. http://dx.doi.org/10.1088/1742-6596/2091/1/012038.

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Abstract The paper discusses On-Board Computing Control Systems (OBCS) in astronautics, avionics, autonomous mobile devices, robotics, weapons control and multi-core microprocessors. This is sort of a “backbone”, which unites many sensors, calculators, control and executive devices. The architecture of these networks was developed some 30-40 years ago. At that time, these systems met the technical conditions in terms of dynamics and reliability. Nowadays, these systems must perform their functions for 10 to 15 years without maintenance. The performance of system networks must be high enough to

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Rodriguez-Martinez, Eduardo, Cesar Benavides-Alvarez, Carlos Aviles-Cruz, Fidel Lopez-Saca, and Andres Ferreyra-Ramirez. "Improved Parallel Implementation of 1D Discrete Wavelet Transform Using CPU-GPU." Electronics 12, no. 16 (2023): 3400. http://dx.doi.org/10.3390/electronics12163400.

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This work describes a data-level parallelization strategy to accelerate the discrete wavelet transform (DWT) which was implemented and compared in two multi-threaded architectures, both with shared memory. The first considered architecture was a multi-core server and the second one was a graphics processing unit (GPU). The main goal of the research is to improve the computation times for popular DWT algorithms for representative modern GPU architectures. Comparisons were based on performance metrics (i.e., execution time, speedup, efficiency, and cost) for five decomposition levels of the DWT

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Day, Khaled, and Mohammad H. Al-Towaiq. "An Efficient Parallel Gauss-Seidel Algorithm on a 3D Torus Network-on-Chip." Sultan Qaboos University Journal for Science [SQUJS] 20, no. 1 (2015): 29. http://dx.doi.org/10.24200/squjs.vol20iss1pp29-38.

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Network-on-chip (NoC) multi-core architectures with a large number of processing elements are becoming a reality with the recent developments in technology. In these modern systems the processing elements are interconnected with regular NoC topologies such as meshes and tori. In this paper we propose a parallel Gauss-Seidel (GS) iterative algorithm for solving large systems of linear equations on a 3-dimensional torus NoC architecture. The proposed parallel algorithm is O(Nn2/k3) time complexity for solving a system with a matrix of order n on a k×k×k 3D torus NoC architecture with N iteration

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Niu, Shen, Yue Song, Ligong Zhang, et al. "Research Progress of Monolithic Integrated DFB Laser Arrays for Optical Communication." Crystals 12, no. 7 (2022): 1006. http://dx.doi.org/10.3390/cryst12071006.

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Photonic integrated circuits (PICs) play a leading role in modern information and communications technology. Among the core devices in PICs is the distributed feedback (DFB) multi-wavelength semiconductor laser array. Multi-wavelength semiconductor laser arrays can be integrated on a single chip and have the advantages of high stability, good single-mode performance, and narrow line width. The wavelength tuning range has been expanded through the design of the DFB laser array, which is an ideal light source for wavelength-division multiplexing systems. The preparation of DFB laser arrays with

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Fevgas, Athanasios, Konstantis Daloukas, Panagiota Tsompanopoulou, and Panayiotis Bozanis. "A Study of Sparse Matrix Methods on New Hardware." International Journal of Monitoring and Surveillance Technologies Research 3, no. 3 (2015): 1–19. http://dx.doi.org/10.4018/ijmstr.2015070101.

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Modeling of numerous scientific and engineering problems, such as multi-physic problems and analysis of electrical power systems, amounts to the solution of large scale linear systems. The main characteristics of such systems are the large sparsity ratio and the large number of unknowns that can reach thousands or even millions of equations. As a result, efficient solution of sparse large-scale linear systems is of great importance in order to enable analysis of such problems. Direct and iterative algorithms are the prevalent methods for solution of linear systems. Advances in computer hardwar

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Holzer, K., and W. Gall. "Utilizing IHE-based Electronic Health Record Systems for Secondary Use." Methods of Information in Medicine 50, no. 04 (2011): 319–25. http://dx.doi.org/10.3414/me10-01-0060.

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SummaryObjectives: Due to the increasing adoption of Electronic Health Records (EHRs) for primary use, the number of electronic documents stored in such systems will soar in the near future. In order to benefit from this development in secondary fields such as medical research, it is important to define requirements for the secondary use of EHR data. Furthermore, analyses of the extent to which an IHE (Integrating the Healthcare Enterprise)-based architecture would fulfill these requirements could provide further information on upcoming obstacles for the secondary use of EHRs.Methods: A catalo

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Konstantopoulos, George C., Antonio T. Alexandridis, and Panos C. Papageorgiou. "Towards the Integration of Modern Power Systems into a Cyber–Physical Framework." Energies 13, no. 9 (2020): 2169. http://dx.doi.org/10.3390/en13092169.

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The cyber–physical system (CPS) architecture provides a novel framework for analyzing and expanding research and innovation results that are essential in managing, controlling and operating complex, large scale, industrial systems under a holistic insight. Power systems constitute such characteristically large industrial structures. The main challenge in deploying a power system as a CPS lies on how to combine and incorporate multi-disciplinary, core, and advanced technologies into the specific for this case, social, environmental, economic and engineering aspects. In order to substantially co

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Sepúlveda, Johanna, Felix Wilgerodt, and Michael Pehl. "Towards memory integrity and authenticity of multi-processors system-on-chip using physical unclonable functions." it - Information Technology 61, no. 1 (2019): 29–43. http://dx.doi.org/10.1515/itit-2018-0030.

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Abstract A persistent problem for modern Multi-Processors System-on-Chip (MPSoCs) is their vulnerability to code injection attacks. By tampering the memory content, attackers are able to extract secrets from the MPSoC and to modify or deny the MPSoC’s operation. This work proposes SEPUFSoC (Secure PUF-based SoC), a novel flexible, secure, and fast architecture able to be integrated into any MPSoC. SEPUFSoC prevents execution of unauthorized code as well as data manipulation by ensuring memory integrity and authentication. SEPUFSoC achieves: i) efficiency, through the integration of a fast and

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Lenfers, Ulfia Annette, Nima Ahmady-Moghaddam, Daniel Glake, Florian Ocker, Jonathan Ströbele, and Thomas Clemen. "Incorporating Multi-Modal Travel Planning into an Agent-Based Model: A Case Study at the Train Station Kellinghusenstraße in Hamburg." Land 10, no. 11 (2021): 1179. http://dx.doi.org/10.3390/land10111179.

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Models can provide valuable decision support in the ongoing effort to create a sustainable and effective modality mix in urban settings. Modern transportation infrastructures must meaningfully combine public transport with other mobility initiatives such as shared and on-demand systems. The increase of options and possibilities in multi-modal travel implies an increase in complexity when planning and implementing such an infrastructure. Multi-agent systems are well-suited for addressing questions that require an understanding of movement patterns and decision processes at the individual level.

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Szogradi, Marton. "ANALYSIS OF THE OECD/NEA SFR BENCHMARK WITH ANTS REDUCED-ORDER NODAL DIFFUSION SOLVER AND THE SERPENT MONTE CARLO CODE." EPJ Web of Conferences 247 (2021): 04021. http://dx.doi.org/10.1051/epjconf/202124704021.

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In order to meet modern industrial and scientific demands the Kraken multi-physics platform’s development was recently launched at VTT Technical Research Centre of Finland. The neutronic solver of the framework consists of two calculation chains, providing full core solutions by the Serpent high fidelity code (1) and the AFEN/FENM-based reduced-order diffusion solver called Ants (2) capable of handling square and hexagonal geometries in steady-state. Present work introduces the simulation of a large 3600 MWth Sodium-cooled Fast Reactor (SFR) described within the activities of the Working Party

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Kim, Minseong, Seon Wook Kim, and Youngsun Han. "EPSim-C: A Parallel Epoch-Based Cycle-Accurate Microarchitecture Simulator Using Cloud Computing." Electronics 8, no. 6 (2019): 716. http://dx.doi.org/10.3390/electronics8060716.

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Recently, computing platforms have been being configured on a large scale to satisfy the diverse requirements of emerging applications like big data and graph processing, neural network, speech recognition and so on. In these computing platforms, each computing node consists of a multicore, an accelerator, and a complex memory hierarchy, which are connected to other nodes using a variety of high-performance networks. Up to now, researchers have been using cycle-accurate simulators to evaluate the performance of computer systems in detail. However, the execution of the simulators, which models

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Kurzak, Jakub, and Jack Dongarra. "QR Factorization for the Cell Broadband Engine." Scientific Programming 17, no. 1-2 (2009): 31–42. http://dx.doi.org/10.1155/2009/239720.

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The QR factorization is one of the most important operations in dense linear algebra, offering a numerically stable method for solving linear systems of equations including overdetermined and underdetermined systems. Modern implementations of the QR factorization, such as the one in the LAPACK library, suffer from performance limitations due to the use of matrix–vector type operations in the phase of panel factorization. These limitations can be remedied by using the idea of updating of QR factorization, rendering an algorithm, which is much more scalable and much more suitable for implementat

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Sriram, Vinay, and David Kearney. "Towards A Multi-FPGA Infrared Simulator." Journal of Defense Modeling and Simulation: Applications, Methodology, Technology 4, no. 4 (2007): 343–55. http://dx.doi.org/10.1177/154851290700400404.

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High speed infrared (IR) scene simulation is used extensively in defense and homeland security to test sensitivity of IR cameras and accuracy of IR threat detection and tracking algorithms used commonly in IR missile approach warning systems (MAWS). A typical MAWS requires an input scene rate of over 100 scenes/second. Infrared scene simulations typically take 32 minutes to simulate a single IR scene that accounts for effects of atmospheric turbulence, refraction, optical blurring and charge-coupled device (CCD) camera electronic noise on a Pentium 4 (2.8GHz) dual core processor [7]. Thus, in

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Al-Haddad, Luttfi A., and Alaa Abdulhady Jaber. "An Intelligent Fault Diagnosis Approach for Multirotor UAVs Based on Deep Neural Network of Multi-Resolution Transform Features." Drones 7, no. 2 (2023): 82. http://dx.doi.org/10.3390/drones7020082.

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As a modern technological trend, unmanned aerial vehicles (UAVs) are extensively employed in various applications. The core purpose of condition monitoring systems, proactive fault diagnosis, is essential in ensuring UAV safety in these applications. In this research, adaptive health monitoring systems perform blade balancing fault diagnosis and classification. There seems to be a bidirectional unpredictability within each, and this paper proposes a hybrid-based transformed discrete wavelet and a multi-hidden-layer deep neural network (DNN) scheme to compensate for it. Wide-scale, high-quality

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Chatzakis, Manos, Panagiota Fatourou, Eleftherios Kosmas, Themis Palpanas, and Botao Peng. "Odyssey: A Journey in the Land of Distributed Data Series Similarity Search." Proceedings of the VLDB Endowment 16, no. 5 (2023): 1140–53. http://dx.doi.org/10.14778/3579075.3579087.

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This paper presents Odyssey, a novel distributed data-series processing framework that efficiently addresses the critical challenges of exhibiting good speedup and ensuring high scalability in data series processing by taking advantage of the full computational capacity of modern distributed systems comprised of multi-core servers. Odyssey addresses a number of challenges in designing efficient and highly-scalable distributed data series index, including efficient scheduling, and load-balancing without paying the prohibitive cost of moving data around. It also supports a flexible partial repli

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Flores-Vergara, Abraham, Everardo Inzunza-González, Enrique García-Guerrero, et al. "Implementing a Chaotic Cryptosystem by Performing Parallel Computing on Embedded Systems with Multiprocessors." Entropy 21, no. 3 (2019): 268. http://dx.doi.org/10.3390/e21030268.

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Profiling and parallel computing techniques in a cluster of six embedded systems with multiprocessors are introduced herein to implement a chaotic cryptosystem for digital color images. The proposed encryption method is based on stream encryption using a pseudo-random number generator with high-precision arithmetic and data processing in parallel with collective communication. The profiling and parallel computing techniques allow discovery of the optimal number of processors that are necessary to improve the efficiency of the cryptosystem. That is, the processing speed improves the time for ge

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BALABAN, Anton, Andrei NEAMTU, Sorin BERBENTE, et al. "Considerations regarding the composition of the cockpit view for a modern simulator." INCAS BULLETIN 15, no. 2 (2023): 3–10. http://dx.doi.org/10.13111/2066-8201.2023.15.2.1.

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This study shows how to generate images and compose images in the modern simulator room by starting multiple work sessions running at the same time so that all active server stations and the station to connect to are continuously displayed. Each server handles specific functions of the simulation process and runs a dedicated software application for its specific functions. For a supervised flight simulator, the following functions need to have dedicated applications: 1) Flight Dynamics Simulation, 2) Graphical projection, 3) Cockpit and Flight instrumentation simulation and integration, 4) Sup

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Hu, Tianxun, Tianzheng Wang, and Qingqing Zhou. "Online schema evolution is (almost) free for snapshot databases." Proceedings of the VLDB Endowment 16, no. 2 (2022): 140–53. http://dx.doi.org/10.14778/3565816.3565818.

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Modern database applications often change their schemas to keep up with the changing requirements. However, support for online and transactional schema evolution remains challenging in existing database systems. Specifically, prior work often takes ad hoc approaches to schema evolution with "patches" applied to existing systems, leading to many corner cases and often incomplete functionality. Applications therefore often have to carefully schedule downtimes for schema changes, sacrificing availability. This paper presents Tesseract, a new approach to online and transactional schema evolution w

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Yang, Renchi, Jieming Shi, Xiaokui Xiao, Yin Yang, Sourav S. Bhowmick, and Juncheng Liu. "No PANE, No Gain." ACM SIGMOD Record 51, no. 1 (2022): 42–49. http://dx.doi.org/10.1145/3542700.3542711.

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Given a graph G where each node is associated with a set of attributes, attributed network embedding (ANE) maps each node v 2 G to a compact vector Xv, which can be used in downstream machine learning tasks in a variety of applications. Existing ANE solutions do not scale to massive graphs due to prohibitive computation costs or generation of low-quality embeddings. This paper proposes PANE, an effective and scalable approach to ANE computation for massive graphs in a single server that achieves state-of-the-art result quality on multiple benchmark datasets for two common prediction tasks: lin

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Marques, Diogo, Aleksandar Ilic, and Leonel Sousa. "Mansard Roofline Model: Reinforcing the Accuracy of the Roofs." ACM Transactions on Modeling and Performance Evaluation of Computing Systems 6, no. 2 (2021): 1–23. http://dx.doi.org/10.1145/3475866.

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Continuous enhancements and diversity in modern multi-core hardware, such as wider and deeper core pipelines and memory subsystems, bring to practice a set of hard-to-solve challenges when modeling their upper-bound capabilities and identifying the main application bottlenecks. Insightful roofline models are widely used for this purpose, but the existing approaches overly abstract the micro-architecture complexity, thus providing unrealistic performance bounds that lead to a misleading characterization of real-world applications. To address this problem, the Mansard Roofline Model (MaRM), prop

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Gräßler, Iris, and Jens Pottebaum. "Generic Product Lifecycle Model: A Holistic and Adaptable Approach for Multi-Disciplinary Product–Service Systems." Applied Sciences 11, no. 10 (2021): 4516. http://dx.doi.org/10.3390/app11104516.

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The linear economic model behind contemporary product lifecycle representations contradicts planetary boundaries and the idea of sustainability. At the same time, Circular Economy (CE) driven models lack consideration of profound technological insights. Based on observations in research and the application of projects of different industries, a quantitative and qualitative literature analysis is applied to identify both strengths and shortcomings of current lifecycle models. These findings are used to create lifecycle model portfolios and to derive a generic Product Lifecycle model (gPLC). The

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Wedlich-Söldner, Roland, and Timo Betz. "Self-organization: the fundament of cell biology." Philosophical Transactions of the Royal Society B: Biological Sciences 373, no. 1747 (2018): 20170103. http://dx.doi.org/10.1098/rstb.2017.0103.

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Self-organization refers to the emergence of an overall order in time and space of a given system that results from the collective interactions of its individual components. This concept has been widely recognized as a core principle in pattern formation for multi-component systems of the physical, chemical and biological world. It can be distinguished from self-assembly by the constant input of energy required to maintain order—and self-organization therefore typically occurs in non-equilibrium or dissipative systems. Cells, with their constant energy consumption and myriads of local interact

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Mendon, Ashwin A., Andrew G. Schmidt, and Ron Sass. "A Hardware Filesystem Implementation with Multidisk Support." International Journal of Reconfigurable Computing 2009 (2009): 1–13. http://dx.doi.org/10.1155/2009/572860.

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Modern High-End Computing systems frequently include FPGAs as compute accelerators. These programmable logic devices now support disk controller IP cores which offer the ability to introduce new, innovative functionalities that, previously, were not practical. This article describes one such innovation: a filesystem implemented in hardware. This has the potential of improving the performance of data-intensive applications by connecting secondary storage directly to FPGA compute accelerators. To test the feasibility of this idea, a Hardware Filesystem was designed with four basic operations (op

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Chakraborty, Shounak, and Magnus Själander. "WaFFLe." ACM Transactions on Architecture and Code Optimization 18, no. 4 (2021): 1–25. http://dx.doi.org/10.1145/3471908.

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Managing thermal imbalance in contemporary chip multi-processors (CMPs) is crucial in assuring functional correctness of modern mobile as well as server systems. Localized regions with high activity, e.g., register files, ALUs, FPUs, and so on, experience higher temperatures than the average across the chip and are commonly referred to as hotspots. Hotspots affect functional correctness of the underlying circuitry and a noticeable increase in leakage power, which in turn generates heat in a self-reinforced cycle. Techniques that reduce the severity of or completely eliminate hotspots can maint

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Wang, Jinpeng, Ye Zhengpeng, Jeremy Gillbanks, Tarun M. Sanders, and Nianyu Zou. "A Power Control Algorithm Based on Chicken Game Theory in Multi-Hop Networks." Symmetry 11, no. 5 (2019): 718. http://dx.doi.org/10.3390/sym11050718.

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With the development of modern society, there are not only many voice calls being made over wireless communication systems, but there is also a great deal of demand for data services. There are increasing demands from the general public for more information data, especially for high-speed services with elevated Gbps levels. As is well known, higher sending power is needed once data rates increase. In order to solve this problem, virtual cellular networks (VCNs) can be employed in order to reduce these peak power shifts. If a VCN works well, mobile ports will receive their own wireless signals

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Loss, Cristiano, Stefano Pacchioli, Andrea Polastri, Daniele Casagrande, Luca Pozza, and Ian Smith. "Numerical Study of Alternative Seismic-Resisting Systems for CLT Buildings." Buildings 8, no. 11 (2018): 162. http://dx.doi.org/10.3390/buildings8110162.

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Changes to building codes that enable use of materials such as cross-laminated timber (CLT) in mid- and high-rise construction are facilitating sustainable urban development in various parts of the world. Keys to this are the transition to multi-performance-based design approaches along with fewer limitations on heights or the number of storeys in superstructures constructed from combustible materials. Architects and engineers have increased freedom to apply new design and construction concepts and methods, as well as to combine timber with other structural materials. They also have started to

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Bazhenov, V. E., A. V. Koltygin, A. A. Nikitina, V. D. Belov, and E. A. Lazarev. "The efficiency of multithreaded computing in casting simulation software." Izvestiya. Non-Ferrous Metallurgy, no. 3 (June 17, 2023): 38–53. http://dx.doi.org/10.17073/0021-3438-2023-3-38-53.

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The utilization of computer simulation software for casting process simulation is becoming essential in the advancement of casting technology in aviation and other high-tech engineering fields. With the increase in the number of computational cores in modern CPUs, the use of multi-threaded computations is becoming increasingly relevant. In this study, the efficiency of multi-threaded computations in modeling casting processes was evaluated using finite element method casting simulation software ProCast and PoligonSoft, which utilize parallel computing architectures with distributed (DMP) and s

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Wang, Xianxun, Lihua Chen, Qijuan Chen, Yadong Mei, and Hao Wang. "Model and Analysis of Integrating Wind and PV Power in Remote and Core Areas with Small Hydropower and Pumped Hydropower Storage." Energies 11, no. 12 (2018): 3459. http://dx.doi.org/10.3390/en11123459.

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Small hydropower (SHP) and pumped hydropower storage (PHS) are ideal members of power systems with regard to integrating intermittent power production from wind and PV facilities in modern power systems using the high penetration of renewable energy. Due to the limited capacity of SHP and the geographic restrictions of PHS, these power sources have not been adequately utilized in multi-energy integration. On the one hand, rapidly increasing wind/PV power is mostly situated in remote areas (i.e., mountain and rural areas) and is delivered to core areas (i.e., manufacturing bases and cities) for

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