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7th BlackboxNLP Workshop on Analyzing and Interpreting Neural Networks for NLP, BlackboxNLP 2024

作者： Koulakos, Alexandros Lymperaiou, Maria Filandrianos, Giorgos Stamou, Giorgos Artificial Intelligence and Learning Systems Laboratory School of Electrical and Computer Engineering National Technical University of Athens Greece

ISBN: (纸本)9798891761704

The surge of state-of-the-art transformer-based models has undoubtedly pushed the limits of NLP model performance, excelling in a variety of tasks. We cast the spotlight on the underexplored task of Natural Language Inference (NLI), since models trained on popular well-suited datasets are susceptible to adversarial attacks, allowing subtle input interventions to mislead the model. In this work, we validate the usage of natural language explanation as a model-agnostic defence strategy through extensive experimentation: only by fine-tuning a classifier on the explanation rather than premise-hypothesis inputs, robustness under various adversarial attacks is achieved in comparison to explanation-free baselines. Moreover, since there is no standard strategy for testing the semantic validity of the generated explanations, we research the correlation of widely used language generation metrics with human perception, in order for them to serve as a proxy towards robust NLI models. Our approach is resource-efficient and reproducible without significant computational limitations.1 ©2024 Association for Computational Linguistics.

关键词： Adversarial machine learning

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Analysis and Comparison of Integrated Planar Transformers for CLLC Resonant Converters

Analysis and Comparison of Integrated Planar Transformers fo...

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2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Yuan, Tianlong Jin, Feng Yu, Gibum Li, Qiang Virginia Polytechnic and State University Center for Power Electronics Systems Bradley Department of Electrical and Computer Engineering Blacksburg United States

ISBN: (纸本)9798350376067

The advancement of electric vehicles and green energy technologies necessitates on-board chargers (OBCs) with higher power density and reduced costs. Integrated planar magnetics emerge as a highly competitive option due to their superior power density and ease of manufacturing compared to traditional magnetic designs. However, detailed flux analysis, particularly the distribution on the plate, remains essential for evaluating various transformer structures. This paper presents a comprehensive comparison of different core structures for integrated transformers, validated through an 11-kW CLLC resonant converter prototype with a 98.4% peak efficiency and 420 W/inch3 power density. © 2024 IEEE.

关键词： Resonant converters

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Modeling and Analysis of The Balance Network for Common Mode EMI Noise Suppression

Modeling and Analysis of The Balance Network for Common Mode...

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2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Yang, Qiuzhe Wang, Shuo Li, Qiang Virginia Tech Center for Power Electronics Systems Bradley Department of Electrical and Computer Engineering BlacksburgVA24061 United States

ISBN: (纸本)9798350376067

This paper presents the model of the balance technique for common mode noise suppression. Considering the resonance due to the self-parasitic capacitance of the inductor in the balance network, coupling between the inductors is essential to compensate for the impact of self resonance. The derived model illustrates how the coupling coefficient affects the balance condition. To verify the model, three coupled inductors with different coupling coefficients are designed. A voltage-gain based method is proposed to simulate the real noise source in the balance network. And the voltage ratio between the balance bridges can be experimentally measured. The result matches the prediction very well and verifies the balance model. © 2024 IEEE.

关键词： Interference suppression

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Flexible, Super-stable, and Multifunctional Capacitive Pressure Sensors with Tilted Micropillar Array by Inclined Laser Ablation and Demolding

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IEEE Sensors Journal 2025年第6期25卷 9367-9374页

作者： Xu, Tianlong Li, Kaixin Zhou, Yihao Zhang, Dawei Sheng, Bin College of Optical Electrical and Computer Engineering Unversity of Shanghai for Science and Technology Shanghai 200093 China. Shanghai Key Laboratory of Modern Optical Systems Engineering Research Center of Optical Instruments and System Shanghai 200093 China

Flexible capacitive pressure sensors have garnered considerable interest across diverse applications, including medical monitoring, electronic skin, and robotic tactile systems, owing to their straightforward fabrication process, low energy consumption, and robust stability. In this paper, we introduce a new inclined laser ablation (ILA) combined with demolding technique for the fabrication of flexible capacitive sensors featuring a microstructured dielectric layer composed of a tilted micropillar array (TMA). The design parameters of TMA were systematically optimized, including the tilt angle of the micropillars, array gap, aspect ratio, and bottom film thickness. The resulting capacitive pressure sensor, equipped with 75° tilted micropillar arrays (aspect ratio of 5:1), demonstrates exceptional sensitivity (1.12 kPa-1) within the low-pressure range (0-2 kPa), rapid response and recovery times, a low pressure detection limit of 0.25 Pa, and transient response stability factor as high as 243.9. The proposed capacitive pressure sensor was validated for the detection and recognition of human motions when attached to various body parts. Additionally, the sensors also demonstrated significant potential for diverse applications, including tactile sensing, and Morse code communication. © 2025 IEEE.

关键词： Aspect ratio

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Rollick Games: A Formal Language Based Platform for Location-Based Pervasive Games 1

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15th International Conference on Interactive Mobile Communication, Technologies, and Learning, IMCL 2023

作者： Anestis, George Gioldasis, Nektarios Karasavvidis, Stefanos Palioudakis, Tzanis Moumoutzis, Nektarios Christodoulakis, Stavros Laboratory of Distributed Multimedia Information Systems and Applications School of Electrical and Computer Engineering Technical University of Crete Chania Greece School of Electrical and Computer Engineering Technical University of Crete Chania Greece

ISBN: (数字)9783031560750

ISBN: (纸本)9783031560743

In this paper, we present the Rollick Games platform and its Pervasive Game Modeling Language that enables the description of location-based pervasive games using a GUI provided by the Game Studio web app. The runtime environment (Pervasive Game Execution Environment) is responsible for generating the Pervasive Game Execution Language from a game model and loading it to an instance of the game's Execution Engine. The Execution Environment includes a set of agents responsible for monitoring the players’ context and interaction with other game elements and among each other. The Engine follows an event-driven paradigm and uses an event loop waiting for events to be dispatched from the agents to carry out its computations based on its current state, context, and event data. The proposed approach allows for both sharing and reusing game models, significantly reducing time to market and development costs. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Modeling languages

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Electrothermal Coupling Filed Calculation of 200 kV Adaptive Bushing 4

Electrothermal Coupling Filed Calculation of 200 kV Adaptive...

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4th IEEE International Conference on electrical Materials and power Equipment, ICEMPE 2023

作者： Huang, Zhiwen Yuan, Zhikang Zhou, Yifan Hu, Jun Sun, Ya He, Jinliang Tsinghua University State Key Laboratory of Power Systems Department of Electrical Engineering Beijing China

ISBN: (纸本)9798350334678

DC bushing is one of the technical challenges that restrict the development of DC power transmission and transformation technology. With the electrification of society towards higher power density, bushings are exposed to extreme electrical and thermal stress superpositions during operation. The adaptive bushing, with a field grading layer, provides additional benefits compared to the conventional bushing. In this paper, an electro thermal coupling field simulation model of adaptive bushing was established. The determination of the parameters of the nonlinear materials in the field grading layer was discussed. Under the electrothermal coupling filed, the electric field distribution and temperature distribution were simulated. With the increase of load current, the temperature gradient intensifies, and the maximum electric field distributed in the main insulation part reverses from inner to outer. Benefit from the field-depended conductivity, the nonlinear materials can introduce negative feedback in voltage distribution, so that the electric field shows good stability even under the extreme temperature gradient. This work will promote the application of nonlinear composites in ultra-high voltage DC bushings. © 2023 IEEE.

关键词： Electric fields

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Plasma sprayed thermal barrier coatings with outstanding ultrahigh temperature thermal shock resistances through gradient porosity level optimizations

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Ceramics International 2025年第13期51卷 17484-17491页

作者： Liu, Liqiang Xu, Wenhu Shi, Junmiao Zhang, Xian-Cheng Tu, Shan-Tung Key Laboratory of Pressure Systems and Safety Ministry of Education School of Mechanical and Power Engineering East China University of Science and Technology Shanghai200237 China School of Mechanical and Electrical Engineering Changchun University of Science and Technology Changchun130022 China

In this study, the YSZ thermal barrier coatings (TBCs) with gradient porosity was developed through design the spraying parameters. The effect of the gradient porosity on the bond strength and thermal shock life was investigated, and the failure mechanism of the TBCs was explored. This article prepared three coatings with different porosities, tested the bonding strength of different porosities using the tensile method, and tested the thermal shock resistance of the coatings using water quenching after thermal shock. By simulating the residual stress inside the coatings after spraying, the failure mechanism of the coatings after thermal shock was analyzed. With the decrease of the porosity from TBC I to TBC III, the residual stress concentration after the spraying raised. Subsequently, the bond strength of the TBCs decreased form 37 MPa–31 MPa owing to the residual stress evolution. All of the three TBCs underwent three thermal shock test without macroscopic spalling. During the thermal shock test, tensile horizontal stress formed and promoted the formation of vertical cracks. Tensile vertical stress concentrated at the top - coat/bond - coat (TC/BC) interface significantly, inducing horizontal crack adjacent to the interface. Additionally, the TC layer surface zone sintered under the oxygen-acetylene flame heating. Then tensile vertical stress concentration was formed in the sintering zone region, and horizontal crack was detected in the TC layer. The connection of the vertical cracks and horizontal cracks was responsible for the spalling and failure of the TC layer. © 2025

关键词： Spalling

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Effect of Magnetic Couplings on Conducted EMI of GaN-Based PFC Converter 14

Effect of Magnetic Couplings on Conducted EMI of GaN-Based P...

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14th Annual IEEE Applied power Electronics Conference and Exposition, APEC 2025

作者： McGrew, Tyler Li, Qiang Virginia Tech Center for Power Electronic Systems The Bradley Department of Electrical and Computer Engineering BlacksburgVA United States

ISBN: (纸本)9798331516116

Wide-bandgap power devices have enabled power supplies to increase in density while maintaining high efficiency. However, EMI issues remain one of the most challenging aspects when designing a power converter. These issues are often caused by parasitic near-field couplings which can degrade or bypass the attenuation of the EMI filter. This paper investigates how parasitic magnetic couplings impact the conducted noise of a high-frequency PFC converter using PCB-winding inductor. Analytical models are presented for both differential mode (DM) and common mode (CM) noise, including the effects of magnetic couplings between the PFC inductor and EMI filter. Then, three ferrite inductor core designs are evaluated to demonstrate how the core's geometry and permeability affect its leakage magnetic field. Choosing the optimal core design is shown to significantly reduce the magnetic field outside the PFC inductor, which reduces DM noise by more than 20 dB and reduces CM noise by 7 dB. © 2025 IEEE.

关键词： Magnetic levitation

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Extraction of Common Mode Parasitic Capacitance in Balance Filter for The Prediction of EMI Noise Suppression 14

Extraction of Common Mode Parasitic Capacitance in Balance F...

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14th Annual IEEE Applied power Electronics Conference and Exposition, APEC 2025

作者： Yang, Qiuzhe Chen, Xingyu Wang, Zijian Li, Qiang Virginia Polytechnic and State University Center for Power Electronics Systems Bradley Department of Electrical and Computer Engineering BlacksburgVA24061 United States

ISBN: (纸本)9798331516116

This paper proposes a new method to extract the common mode parasitic capacitance in the balance network for the totem-pole converter. Filter concept is applied to the balance network to predict the EMI noise with the extracted parasitic capacitance. With the proposed method, the EMI noise prediction matches the experiment very well within 30MHz. © 2025 IEEE.

关键词： Common mode noise EMI modeling parasitic capacitance

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A Novel Technology for Semiautomatic and Automatic Stem–Stake Coupling of Seedlings and Plants

IEEE Transactions on AgriFood Electronics

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IEEE Transactions on AgriFood Electronics 2025年第1期3卷 254-262页

作者： Shirzi, Moteaal Asadi Kermani, Mehrdad R. Western University Advanced Robotics and Mechatronic Systems Laboratory Electrical and Computer Engineering Department LondonN6A 5B9 Canada Western University Department of Electrical and Computer Engineering LondonN6A 3K7 Canada Advanced Robotics and Mechatronic Systems Laboratory LondonN6A 5B9 Canada

This article introduces a novel mechatronic system for coupling the stems of seedlings and plants to wooden stakes or ropes, a crucial process for supporting them during growth, transportation, and fruiting in plant propagation facilities and greenhouses. The stem–stake coupling device utilizes interconnected mechanisms and an impedance control method to adjust motor torque and speed, shaping metallic wire into clips of various shapes and dimensions, effectively securing plant stems to stakes or ropes. In a robotic system, a claw-shaped arm mechanism, a stereo camera, and real-time vision techniques are integrated into the stem–stake coupling device to identify the optimal coupling point and automate the coupling task. This innovation addresses the labor-intensive task of manual coupling, offering a scalable solution for growers through handheld devices or fully automated robotic systems. In the context of increasing labor shortages and rising costs, the technology offers a sustainable and efficient alternative with significant potential to enhance operational efficiency in greenhouses and propagation facilities. © 2023 IEEE.

关键词： Seed

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