Major equipment manufacturers are increasing their research and development investment, and have successively launched solutions for 100G (Gigabyte) fiber optic transmission systems. However, the 100G DP-QPSK (Dual-po...
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This paper deals with system-identification for a distributed parameter heating process where a solid substrate is moving through a spatially extended heating zone and heated up by applying hot air to its surface. The...
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This paper deals with system-identification for a distributed parameter heating process where a solid substrate is moving through a spatially extended heating zone and heated up by applying hot air to its surface. The temperature distribution inside the substrate is modeled in a spatial plane, where heat conduction is considered in the direction, perpendicular to the direction of movement. In contrast to previous work, where scalar model parameters (e.g. the thermal parameters of the substrate) have been identified, here, the quantities for the heat transfer (heat transfer coefficient and air temperature) are identified as functions yielding a significantly improved fit to the measurement data. This improved system-identification is performed for two early-lumping modeling approaches, which differ in the way the advection term in the governing Partial Differential Equation is discretized: one uses Eulerian coordinates, where the computational grid is stationary, whereas the second employs Lagrangian coordinates where the grid is moving with the substrate. The differences of the two approaches are discussed with the main focus on numerical diffusion. Especially its impact on the system-identification is investigated: although the fit to the measurement is comparably good in both cases, very different solutions are obtained for the identified functions which, we argue, is due to the optimizer counteracting the smoothing effect of numerical diffusion. Copyright (c) 2025 The Authors. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0/)
When solving compute-intensive tasks, CPU/GPU hardware resources and specialized grid, Custer, Cloud infrastructure are commonly used to achieve high performance. However, this requires a high initial capital expense ...
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ISBN:
(纸本)9783031061561;9783031061554
When solving compute-intensive tasks, CPU/GPU hardware resources and specialized grid, Custer, Cloud infrastructure are commonly used to achieve high performance. However, this requires a high initial capital expense and ongoing maintenance costs. In contrast, ARM-based mobile devices regularly see improvement in their capacity, stability, and processing power daily while becoming ever more ubiquitous and requiring no massive capital or operating expenditures thanks to their reduced size and energy efficiency. Given this shifting computer paradigm, it is conceivable that a cost- and power-efficient solution for our world's HPC processing tasks would include ARM-based mobile devices, while they are idle during recharging periods. We proposed, developed, deployed and evaluated a distributed, collaborative, elastic and low-cost platform to solve HPC tasks recycling ARM mobile resources based on Cloud, microservices and containers, efficiently orchestrated via Kubernetes. To validate the system scalability, flexibility, and performance a lot of concurrent video transcoding scenarios were run. The results showed the system allows for improvements in terms of scalability, flexibility, stability, efficiency, and cost for HPC workloads.
In the increasingly advanced environment of technology, the power distribution network is gradually developing towards automation, and the functions of its distribution automation terminal equipment are also becoming ...
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Despite the development of various distributed graph systems, little attention has been paid to the granularity of computation and communication, which can significantly impact overall efficiency. Moreover, users ofte...
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We introduce SpDISTAL, a compiler for sparse tensor algebra that targets distributed systems. SpDISTAL combines separate descriptions of tensor algebra expressions, sparse data structures, data distribution, and compu...
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Decentralized character, solid database, security features, and, to a significant part, anonymity, block chain provides a novel method for the storing, exchange, and preservation of private data. This is one of the re...
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As more and more services in the power grid introduce machine learning and deep learning technologies, feature engineering has become more and more complex. In order to improve the efficiency of feature engineering, t...
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With the development of machine learning and big data technologies, distributed training has become an important way to improve computational efficiency. However, in the distributed training environment, the performan...
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Multi-robot reinforcement learning (MRRL) is a promising approach to solving cooperation problems and has been widely adopted in many applications. In the past decades, researchers have proposed various approaches to ...
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