[{"article_number":"1517","department":[{"_id":"52"}],"user_id":"34289","_id":"59805","status":"public","type":"journal_article","doi":"10.3390/electronics14081517","main_file_link":[{"url":"https://www.mdpi.com/2079-9292/14/8/1517"}],"volume":14,"author":[{"full_name":"Unruh, Roland","id":"34289","last_name":"Unruh","first_name":"Roland"},{"last_name":"Böcker","orcid":"0000-0002-8480-7295","full_name":"Böcker, Joachim","id":"66","first_name":"Joachim"},{"first_name":"Frank","last_name":"Schafmeister","id":"71291","full_name":"Schafmeister, Frank"}],"date_updated":"2025-05-05T12:34:00Z","intvolume":"        14","citation":{"apa":"Unruh, R., Böcker, J., &#38; Schafmeister, F. (2025). Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple. <i>Electronics</i>, <i>14</i>(8), Article 1517. <a href=\"https://doi.org/10.3390/electronics14081517\">https://doi.org/10.3390/electronics14081517</a>","bibtex":"@article{Unruh_Böcker_Schafmeister_2025, title={Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple}, volume={14}, DOI={<a href=\"https://doi.org/10.3390/electronics14081517\">10.3390/electronics14081517</a>}, number={81517}, journal={Electronics}, publisher={MDPI AG}, author={Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}, year={2025} }","mla":"Unruh, Roland, et al. “Adaptive DC-Link Voltage Control for 22 KW, 40 KHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple.” <i>Electronics</i>, vol. 14, no. 8, 1517, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/electronics14081517\">10.3390/electronics14081517</a>.","short":"R. Unruh, J. Böcker, F. Schafmeister, Electronics 14 (2025).","ieee":"R. Unruh, J. Böcker, and F. Schafmeister, “Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple,” <i>Electronics</i>, vol. 14, no. 8, Art. no. 1517, 2025, doi: <a href=\"https://doi.org/10.3390/electronics14081517\">10.3390/electronics14081517</a>.","chicago":"Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Adaptive DC-Link Voltage Control for 22 KW, 40 KHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple.” <i>Electronics</i> 14, no. 8 (2025). <a href=\"https://doi.org/10.3390/electronics14081517\">https://doi.org/10.3390/electronics14081517</a>.","ama":"Unruh R, Böcker J, Schafmeister F. Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple. <i>Electronics</i>. 2025;14(8). doi:<a href=\"https://doi.org/10.3390/electronics14081517\">10.3390/electronics14081517</a>"},"publication_identifier":{"issn":["2079-9292"]},"publication_status":"published","language":[{"iso":"eng"}],"keyword":["adaptive DC-link voltage","cascaded H-bridge","resonant operation","Full-Bridge Converter","loss minimization","LLC Resonant Converter","peak capacitor voltage reduction"],"abstract":[{"text":"The LLC converter achieves the highest efficiency in resonant operation. Conventionally, the input DC-link voltage is controlled to operate the LLC converter at resonance for the given operating point. However, the DC-link capacitor voltage shows a low-frequency voltage ripple (typically the second harmonic of grid frequency) in cascaded converters so that the LLC has to adapt its switching frequency within the grid period. Conventionally, the LLC converter operates 50% of the time above the resonant frequency of 40 kHz and 50% below resonance. Both operating conditions cause additional losses. However, experimental measurements indicate that the below-resonance operation causes significantly higher losses than above-resonance operation due to much higher primary and secondary transformer currents. It is better to increase the DC-link voltage by 30% of the peak-to-peak low-frequency voltage ripple to mostly avoid below-resonance operation (i.e., from 650 V to 680 V in this case). With the proposed control, the LLC converter operates about 75% of time over resonance and only 25% of time below resonance. The overall efficiency increases from 97.66% to 97.7% for the average operating point with an 80% load current. This corresponds to a 2% total loss reduction. Finally, the peak resonance capacitor voltage decreases from 910 V to 790 V (−13%).","lang":"eng"}],"publication":"Electronics","title":"Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple","date_created":"2025-05-05T12:27:39Z","publisher":"MDPI AG","year":"2025","issue":"8"},{"year":"2025","issue":"21","title":"Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE)","date_created":"2026-02-19T10:08:21Z","publisher":"MDPI AG","abstract":[{"text":"<jats:p>This paper presents a comprehensive design framework for Enterprise Architecture aimed at facilitating decision-driven analytics in smart factories. The motivation behind this research lies in challenges faced by manufacturing companies, such as skilled labor shortages and increasing global competition, alongside the imperative for sustainable production. This journal provides a novel approach for designing and documenting prescriptive analytics use cases in manufacturing environments. The framework addresses the need for effective integration of advanced data analytics and prescriptive analytics solutions within existing production environments, thereby enhancing operational efficiency and decision-making processes. A Design Science Research approach is used to iteratively derive a framework based on stakeholder needs and activities along the prescriptive analytics use case development cycle. The resulting framework is demonstrated and evaluated in an IoT Factory setup in a research facility. From a practical perspective, the framework supports manufacturing companies in systematically designing prescriptive analytics use cases. From a research perspective, it contributes to the body of knowledge on Enterprise Architecture Management (EAM) by operationalizing the design of prescriptive analytics use cases in manufacturing contexts. The main contributions of this study include the development of a framework that supports the planning, design, and integration of prescriptive analytics use cases. This framework fosters interdisciplinary collaboration and aids in managing the complexity of data-driven projects.</jats:p>","lang":"eng"}],"publication":"Electronics","language":[{"iso":"eng"}],"intvolume":"        14","citation":{"chicago":"Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE).” <i>Electronics</i> 14, no. 21 (2025). <a href=\"https://doi.org/10.3390/electronics14214271\">https://doi.org/10.3390/electronics14214271</a>.","ieee":"J. Weller and R. Dumitrescu, “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE),” <i>Electronics</i>, vol. 14, no. 21, Art. no. 4271, 2025, doi: <a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>.","bibtex":"@article{Weller_Dumitrescu_2025, title={Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE)}, volume={14}, DOI={<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>}, number={214271}, journal={Electronics}, publisher={MDPI AG}, author={Weller, Julian and Dumitrescu, Roman}, year={2025} }","mla":"Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE).” <i>Electronics</i>, vol. 14, no. 21, 4271, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>.","short":"J. Weller, R. Dumitrescu, Electronics 14 (2025).","apa":"Weller, J., &#38; Dumitrescu, R. (2025). Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>, <i>14</i>(21), Article 4271. <a href=\"https://doi.org/10.3390/electronics14214271\">https://doi.org/10.3390/electronics14214271</a>","ama":"Weller J, Dumitrescu R. Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>. 2025;14(21). doi:<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>"},"publication_identifier":{"issn":["2079-9292"]},"publication_status":"published","doi":"10.3390/electronics14214271","volume":14,"author":[{"first_name":"Julian","last_name":"Weller","full_name":"Weller, Julian"},{"last_name":"Dumitrescu","id":"16190","full_name":"Dumitrescu, Roman","first_name":"Roman"}],"date_updated":"2026-02-19T10:08:54Z","status":"public","type":"journal_article","article_number":"4271","department":[{"_id":"563"}],"user_id":"15782","_id":"64253"},{"department":[{"_id":"563"}],"user_id":"15782","_id":"62138","language":[{"iso":"eng"}],"article_number":"4271","publication":"Electronics","type":"journal_article","status":"public","abstract":[{"text":"<jats:p>This paper presents a comprehensive design framework for Enterprise Architecture aimed at facilitating decision-driven analytics in smart factories. The motivation behind this research lies in challenges faced by manufacturing companies, such as skilled labor shortages and increasing global competition, alongside the imperative for sustainable production. This journal provides a novel approach for designing and documenting prescriptive analytics use cases in manufacturing environments. The framework addresses the need for effective integration of advanced data analytics and prescriptive analytics solutions within existing production environments, thereby enhancing operational efficiency and decision-making processes. A Design Science Research approach is used to iteratively derive a framework based on stakeholder needs and activities along the prescriptive analytics use case development cycle. The resulting framework is demonstrated and evaluated in an IoT Factory setup in a research facility. From a practical perspective, the framework supports manufacturing companies in systematically designing prescriptive analytics use cases. From a research perspective, it contributes to the body of knowledge on Enterprise Architecture Management (EAM) by operationalizing the design of prescriptive analytics use cases in manufacturing contexts. The main contributions of this study include the development of a framework that supports the planning, design, and integration of prescriptive analytics use cases. This framework fosters interdisciplinary collaboration and aids in managing the complexity of data-driven projects.</jats:p>","lang":"eng"}],"volume":14,"date_created":"2025-11-07T14:42:07Z","author":[{"full_name":"Weller, Julian","last_name":"Weller","first_name":"Julian"},{"full_name":"Dumitrescu, Roman","id":"16190","last_name":"Dumitrescu","first_name":"Roman"}],"date_updated":"2025-11-07T14:42:32Z","publisher":"MDPI AG","doi":"10.3390/electronics14214271","title":"Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE)","issue":"21","publication_identifier":{"issn":["2079-9292"]},"publication_status":"published","intvolume":"        14","citation":{"ama":"Weller J, Dumitrescu R. Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>. 2025;14(21). doi:<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>","chicago":"Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE).” <i>Electronics</i> 14, no. 21 (2025). <a href=\"https://doi.org/10.3390/electronics14214271\">https://doi.org/10.3390/electronics14214271</a>.","ieee":"J. Weller and R. Dumitrescu, “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE),” <i>Electronics</i>, vol. 14, no. 21, Art. no. 4271, 2025, doi: <a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>.","apa":"Weller, J., &#38; Dumitrescu, R. (2025). Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>, <i>14</i>(21), Article 4271. <a href=\"https://doi.org/10.3390/electronics14214271\">https://doi.org/10.3390/electronics14214271</a>","bibtex":"@article{Weller_Dumitrescu_2025, title={Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE)}, volume={14}, DOI={<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>}, number={214271}, journal={Electronics}, publisher={MDPI AG}, author={Weller, Julian and Dumitrescu, Roman}, year={2025} }","short":"J. Weller, R. Dumitrescu, Electronics 14 (2025).","mla":"Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE).” <i>Electronics</i>, vol. 14, no. 21, 4271, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>."},"year":"2025"},{"quality_controlled":"1","issue":"3","year":"2024","publisher":"MDPI AG","date_created":"2024-02-20T06:46:43Z","title":"Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions","publication":"Electronics","abstract":[{"lang":"eng","text":"In applications of piezoelectric actuators and sensors, the dependability and particularly the reliability throughout their lifetime are vital to manufacturers and end-users and are enabled through condition-monitoring approaches. Existing approaches often utilize impedance measurements over a range of frequencies or velocity measurements and require additional equipment or sensors, such as a laser Doppler vibrometer. Furthermore, the non-negligible effects of varying operating conditions are often unconsidered. To minimize the need for additional sensors while maintaining the dependability of piezoelectric bending actuators irrespective of varying operating conditions, an online diagnostics approach is proposed. To this end, time- and frequency-domain features are extracted from monitored current signals to reflect hairline crack development in bending actuators. For validation of applicability, the presented analysis method was evaluated on piezoelectric bending actuators subjected to accelerated lifetime tests at varying voltage amplitudes and under external damping conditions. In the presence of a crack and due to a diminished stiffness, the resonance frequency decreases and the root-mean-square amplitude of the current signal simultaneously abruptly drops during the lifetime tests. Furthermore, the piezoelectric crack surfaces clapping is reflected in higher harmonics of the current signal. Thus, time-domain features and harmonics of the current signals are sufficient to diagnose hairline cracks in the actuators."}],"keyword":["piezoelectric transducer","self-sensing","fault detection","diagnostics","hairline crack","condition monitoring"],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2079-9292"]},"citation":{"ieee":"O. K. Aimiyekagbon, A. Bender, T. Hemsel, and W. Sextro, “Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions,” <i>Electronics</i>, vol. 13, no. 3, Art. no. 521, 2024, doi: <a href=\"https://doi.org/10.3390/electronics13030521\">10.3390/electronics13030521</a>.","chicago":"Aimiyekagbon, Osarenren Kennedy, Amelie Bender, Tobias Hemsel, and Walter Sextro. “Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions.” <i>Electronics</i> 13, no. 3 (2024). <a href=\"https://doi.org/10.3390/electronics13030521\">https://doi.org/10.3390/electronics13030521</a>.","ama":"Aimiyekagbon OK, Bender A, Hemsel T, Sextro W. Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions. <i>Electronics</i>. 2024;13(3). doi:<a href=\"https://doi.org/10.3390/electronics13030521\">10.3390/electronics13030521</a>","apa":"Aimiyekagbon, O. K., Bender, A., Hemsel, T., &#38; Sextro, W. (2024). Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions. <i>Electronics</i>, <i>13</i>(3), Article 521. <a href=\"https://doi.org/10.3390/electronics13030521\">https://doi.org/10.3390/electronics13030521</a>","bibtex":"@article{Aimiyekagbon_Bender_Hemsel_Sextro_2024, title={Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions}, volume={13}, DOI={<a href=\"https://doi.org/10.3390/electronics13030521\">10.3390/electronics13030521</a>}, number={3521}, journal={Electronics}, publisher={MDPI AG}, author={Aimiyekagbon, Osarenren Kennedy and Bender, Amelie and Hemsel, Tobias and Sextro, Walter}, year={2024} }","mla":"Aimiyekagbon, Osarenren Kennedy, et al. “Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions.” <i>Electronics</i>, vol. 13, no. 3, 521, MDPI AG, 2024, doi:<a href=\"https://doi.org/10.3390/electronics13030521\">10.3390/electronics13030521</a>.","short":"O.K. Aimiyekagbon, A. Bender, T. Hemsel, W. Sextro, Electronics 13 (2024)."},"intvolume":"        13","date_updated":"2024-03-15T16:15:56Z","author":[{"first_name":"Osarenren Kennedy","last_name":"Aimiyekagbon","id":"9557","full_name":"Aimiyekagbon, Osarenren Kennedy"},{"first_name":"Amelie","full_name":"Bender, Amelie","id":"54290","last_name":"Bender"},{"first_name":"Tobias","last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias"},{"id":"21220","full_name":"Sextro, Walter","last_name":"Sextro","first_name":"Walter"}],"volume":13,"doi":"10.3390/electronics13030521","type":"journal_article","status":"public","_id":"51518","user_id":"9557","department":[{"_id":"151"}],"article_type":"original","article_number":"521","funded_apc":"1"},{"keyword":["pc2-harp-ressources"],"article_number":"406","language":[{"iso":"eng"}],"_id":"21208","user_id":"61189","abstract":[{"lang":"eng","text":"<jats:p>Heterogeneous platforms with FPGAs have started to be employed in the High-Performance Computing (HPC) field to improve performance and overall efficiency. These platforms allow the use of specialized hardware to accelerate software applications, but require the software to be adapted in what can be a prolonged and complex process. The main goal of this work is to describe and evaluate mechanisms that can transparently transfer the control flow between CPU and FPGA within the scope of HPC. Combining such a mechanism with transparent software profiling and accelerator configuration could lead to an automatic way of accelerating regular applications. In this work, a mechanism based on the ptrace system call is proposed, and its performance on the Intel Xeon+FPGA platform is evaluated. The feasibility of the proposed approach is demonstrated by a working prototype that performs the transparent control flow transfer of any function call to a matching hardware accelerator. This approach is more general than shared library interposition at the cost of a small time overhead in each accelerator use (about 1.3ms in the prototype implementation).</jats:p>"}],"status":"public","publication":"Electronics","type":"journal_article","title":"Transparent Control Flow Transfer between CPU and Accelerators for HPC","doi":"10.3390/electronics10040406","date_updated":"2022-01-06T06:54:49Z","author":[{"first_name":"Daniel","full_name":"Granhão, Daniel","last_name":"Granhão"},{"full_name":"Canas Ferreira, João Canas","last_name":"Canas Ferreira","first_name":"João Canas"}],"date_created":"2021-02-12T07:22:03Z","year":"2021","citation":{"bibtex":"@article{Granhão_Canas Ferreira_2021, title={Transparent Control Flow Transfer between CPU and Accelerators for HPC}, DOI={<a href=\"https://doi.org/10.3390/electronics10040406\">10.3390/electronics10040406</a>}, number={406}, journal={Electronics}, author={Granhão, Daniel and Canas Ferreira, João Canas}, year={2021} }","short":"D. Granhão, J.C. Canas Ferreira, Electronics (2021).","mla":"Granhão, Daniel, and João Canas Canas Ferreira. “Transparent Control Flow Transfer between CPU and Accelerators for HPC.” <i>Electronics</i>, 406, 2021, doi:<a href=\"https://doi.org/10.3390/electronics10040406\">10.3390/electronics10040406</a>.","apa":"Granhão, D., &#38; Canas Ferreira, J. C. (2021). Transparent Control Flow Transfer between CPU and Accelerators for HPC. <i>Electronics</i>. <a href=\"https://doi.org/10.3390/electronics10040406\">https://doi.org/10.3390/electronics10040406</a>","chicago":"Granhão, Daniel, and João Canas Canas Ferreira. “Transparent Control Flow Transfer between CPU and Accelerators for HPC.” <i>Electronics</i>, 2021. <a href=\"https://doi.org/10.3390/electronics10040406\">https://doi.org/10.3390/electronics10040406</a>.","ieee":"D. Granhão and J. C. Canas Ferreira, “Transparent Control Flow Transfer between CPU and Accelerators for HPC,” <i>Electronics</i>, 2021.","ama":"Granhão D, Canas Ferreira JC. Transparent Control Flow Transfer between CPU and Accelerators for HPC. <i>Electronics</i>. 2021. doi:<a href=\"https://doi.org/10.3390/electronics10040406\">10.3390/electronics10040406</a>"},"publication_identifier":{"issn":["2079-9292"]},"publication_status":"published"},{"citation":{"chicago":"Alberto Oliveira de Souza Junior, Carlos, João Bispo, João M. P. Cardoso, Pedro C. Diniz, and Eduardo Marques. “Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture.” <i>Electronics</i>, 2020. <a href=\"https://doi.org/10.3390/electronics9050843\">https://doi.org/10.3390/electronics9050843</a>.","ieee":"C. Alberto Oliveira de Souza Junior, J. Bispo, J. M. P. Cardoso, P. C. Diniz, and E. Marques, “Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture,” <i>Electronics</i>, 2020.","ama":"Alberto Oliveira de Souza Junior C, Bispo J, Cardoso JMP, Diniz PC, Marques E. Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture. <i>Electronics</i>. 2020. doi:<a href=\"https://doi.org/10.3390/electronics9050843\">10.3390/electronics9050843</a>","short":"C. Alberto Oliveira de Souza Junior, J. Bispo, J.M.P. Cardoso, P.C. Diniz, E. Marques, Electronics (2020).","bibtex":"@article{Alberto Oliveira de Souza Junior_Bispo_Cardoso_Diniz_Marques_2020, title={Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture}, DOI={<a href=\"https://doi.org/10.3390/electronics9050843\">10.3390/electronics9050843</a>}, number={843}, journal={Electronics}, author={Alberto Oliveira de Souza Junior, Carlos and Bispo, João and Cardoso, João M. P. and Diniz, Pedro C. and Marques, Eduardo}, year={2020} }","mla":"Alberto Oliveira de Souza Junior, Carlos, et al. “Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture.” <i>Electronics</i>, 843, 2020, doi:<a href=\"https://doi.org/10.3390/electronics9050843\">10.3390/electronics9050843</a>.","apa":"Alberto Oliveira de Souza Junior, C., Bispo, J., Cardoso, J. M. P., Diniz, P. C., &#38; Marques, E. (2020). Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture. <i>Electronics</i>. <a href=\"https://doi.org/10.3390/electronics9050843\">https://doi.org/10.3390/electronics9050843</a>"},"year":"2020","publication_status":"published","publication_identifier":{"issn":["2079-9292"]},"doi":"10.3390/electronics9050843","title":"Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture","date_created":"2020-07-08T08:18:59Z","author":[{"full_name":"Alberto Oliveira de Souza Junior, Carlos","last_name":"Alberto Oliveira de Souza Junior","first_name":"Carlos"},{"first_name":"João","full_name":"Bispo, João","last_name":"Bispo"},{"full_name":"Cardoso, João M. P.","last_name":"Cardoso","first_name":"João M. P."},{"last_name":"Diniz","full_name":"Diniz, Pedro C.","first_name":"Pedro C."},{"full_name":"Marques, Eduardo","last_name":"Marques","first_name":"Eduardo"}],"date_updated":"2022-01-06T06:53:09Z","status":"public","abstract":[{"text":"<jats:p>In this article, we focus on the acceleration of a chemical reaction simulation that relies on a system of stiff ordinary differential equation (ODEs) targeting heterogeneous computing systems with CPUs and field-programmable gate arrays (FPGAs). Specifically, we target an essential kernel of the coupled chemistry aerosol-tracer transport model to the Brazilian developments on the regional atmospheric modeling system (CCATT-BRAMS). We focus on a linear solve step using the QR factorization based on the modified Gram-Schmidt method as the basis of the ODE solver in this application. We target Intel hardware accelerator research program (HARP) architecture with the OpenCL programming environment for these early experiments. Our design exploration reveals a hardware design that is up to 4 times faster than the original iterative Jacobi method used in this solver. Still, even with hardware support, the overall performance of our QR-based hardware is lower than its original software version.</jats:p>","lang":"eng"}],"type":"journal_article","publication":"Electronics","language":[{"iso":"eng"}],"article_number":"843","keyword":["pc2-harp-ressources"],"user_id":"61189","_id":"17359"},{"status":"public","type":"journal_article","publication":"Electronics","keyword":["Electrical and Electronic Engineering","Computer Networks and Communications","Hardware and Architecture","Signal Processing","Control and Systems Engineering"],"language":[{"iso":"eng"}],"_id":"39479","user_id":"20179","department":[{"_id":"59"}],"year":"2015","citation":{"short":"F. Vidor, T. Meyers, U. Hilleringmann, Electronics 4 (2015) 480–506.","bibtex":"@article{Vidor_Meyers_Hilleringmann_2015, title={Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors}, volume={4}, DOI={<a href=\"https://doi.org/10.3390/electronics4030480\">10.3390/electronics4030480</a>}, number={3}, journal={Electronics}, publisher={MDPI AG}, author={Vidor, Fábio and Meyers, Thorsten and Hilleringmann, Ulrich}, year={2015}, pages={480–506} }","mla":"Vidor, Fábio, et al. “Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors.” <i>Electronics</i>, vol. 4, no. 3, MDPI AG, 2015, pp. 480–506, doi:<a href=\"https://doi.org/10.3390/electronics4030480\">10.3390/electronics4030480</a>.","apa":"Vidor, F., Meyers, T., &#38; Hilleringmann, U. (2015). Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors. <i>Electronics</i>, <i>4</i>(3), 480–506. <a href=\"https://doi.org/10.3390/electronics4030480\">https://doi.org/10.3390/electronics4030480</a>","ama":"Vidor F, Meyers T, Hilleringmann U. Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors. <i>Electronics</i>. 2015;4(3):480-506. doi:<a href=\"https://doi.org/10.3390/electronics4030480\">10.3390/electronics4030480</a>","ieee":"F. Vidor, T. Meyers, and U. Hilleringmann, “Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors,” <i>Electronics</i>, vol. 4, no. 3, pp. 480–506, 2015, doi: <a href=\"https://doi.org/10.3390/electronics4030480\">10.3390/electronics4030480</a>.","chicago":"Vidor, Fábio, Thorsten Meyers, and Ulrich Hilleringmann. “Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors.” <i>Electronics</i> 4, no. 3 (2015): 480–506. <a href=\"https://doi.org/10.3390/electronics4030480\">https://doi.org/10.3390/electronics4030480</a>."},"intvolume":"         4","page":"480-506","publication_status":"published","publication_identifier":{"issn":["2079-9292"]},"issue":"3","title":"Flexible Electronics: Integration Processes for Organic and Inorganic Semiconductor-Based Thin-Film Transistors","doi":"10.3390/electronics4030480","date_updated":"2023-03-21T10:16:23Z","publisher":"MDPI AG","author":[{"full_name":"Vidor, Fábio","last_name":"Vidor","first_name":"Fábio"},{"last_name":"Meyers","full_name":"Meyers, Thorsten","first_name":"Thorsten"},{"last_name":"Hilleringmann","id":"20179","full_name":"Hilleringmann, Ulrich","first_name":"Ulrich"}],"date_created":"2023-01-24T11:23:57Z","volume":4}]