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arXiv 2025年

作者： Partohaghighi, Mohammad Marcia, Roummel Chen, YangQuan Electrical Engineering and Computer Science Graduate Program University of California Merced United States Department of Applied Mathematics University of California Merced MercedCA United States Lab Department of Mechanical Engineering School of Engineering University of California MercedCA95343 United States

Fractional-order stochastic gradient descent (FOSGD) leverages fractional exponents to capture long-memory effects in optimization. However, its utility is often limited by the difficulty of tuning and stabilizing these exponents. We propose 2SED Fractional-Order Stochastic Gradient Descent (2SEDFOSGD), which integrates the Two-Scale Effective Dimension (2SED) algorithm with FOSGD to adapt the fractional exponent in a data-driven manner. By tracking model sensitivity and effective dimensionality, 2SEDFOSGD dynamically modulates the exponent to mitigate oscillations and hasten convergence. Theoretically, for onoconvex optimization problems, this approach preserves the advantages of fractional memory without the sluggish or unstable behavior observed in naïve fractional SGD. Empirical evaluations in Gaussian and α-stable noise scenarios using an autoregressive (AR) model highlight faster convergence and more robust parameter estimates compared to baseline methods, underscoring the potential of dimension-aware fractional techniques for advanced modeling and estimation tasks. © 2025, CC BY.

关键词： Convex optimization

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RoboRIO-based Crop Harvesting Robot

RoboRIO-based Crop Harvesting Robot

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International Symposium on computer, Consumer and Control (IS3C)

作者： Kuo- Hsien Hsia Ze-Yu Huang Bo-Jun Yang Jia-Ming Hsiao Bachelor Program in Interdisciplinary Studies National Yunlin University of Science and Technology Douliou Taiwan National Yunlin University of Science and Technology Douliou Taiwan Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology Douliou Taiwan

ISBN: (数字)9781728193625

ISBN: (纸本)9781728193632

Due to the change in life style and the gradual rise of health awareness, more and more people have given up their jobs, returned to the countryside, and bought or rented a small piece of land to live the life of small farmers. Therefore, small agricultural machinery will gradually have a place in the future market. In this paper, aiming at small and medium-sized farmers of cucumber planting, we have designed a prototype of a mobile robot for harvesting low-hanging crop like cucumbers. It is based on the NI roboRIO controller, and Mecanum-wheels are used as the moving wheel. After preliminary real-machine simulation, it was verified that the designed robot can meet the needs of assisting the harvesting of hanging crops.

关键词： Computational modeling Wheels Prototypes Agricultural machinery Agriculture Mobile robots

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Robotic additive construction of bar structures: Unified sequence and motion planning

arXiv

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arXiv 2021年

作者： Huang, Yijiang Garrett, Caelan R. Ting, Ian Parascho, Stefana Mueller, Caitlin T. Building Technology Program Department of Architecture Massachusetts Institute of Technology CambridgeMA02139 United States Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology CambridgeMA02139 United States Princeton University CREATE Laboratory School of Architecture PrincetonNJ08544 United States

Additive robotic construction of building-scale discrete bar structures, such as trusses and space frames, is increasingly attractive due to the potential improvements in efficiency, safety, and design possibilities. However, programming complex robots, such as manipulators with seven degrees of freedom, to successfully complete construction tasks can be tedious, challenging, or impossible for a human to do manually. Namely, the structure must be constructed in a sequence that preserves structural properties, such as stiffness, at each step. At the same time, this sequence must allow for the robot to precisely manipulate elements within the in-progress structure while respecting geometric constraints that, for example, ensure the robot does not collide with what it has built. In this work, we present an automated and newly generalized planning approach for jointly finding a construction sequence and robot motion plan for additive construction that satisfies these requirements. Our approach can be applied in a variety of additive construction processes, and we demonstrate it specifically on spatial extrusion and discrete bar assembly in this paper. We demonstrate the effectiveness of our approach on several simulated and real-world extrusion and assembly tasks, including a human-scale physical prototype, for which our algorithm is deployed for the first time to plan the assembly of a complicated double tangent bar system design. © 2021, CC BY.

关键词： Additives

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Performance evaluation of wmn-psosa-dga simulation system considering linearly decreasing vmax method and rational decreament of vmax method 14th

Performance evaluation of wmn-psosa-dga simulation system co...

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14th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, IMIS 2020

作者： Barolli, Admir Sakamoto, Shinji Ohara, Seiji Barolli, Leonard Takizawa, Makoto Department of Information Technology Aleksander Moisiu University of Durres L.1 Rruga e Currilave Durres Albania Department of Computer and Information Science Seikei University 3-3-1 Kichijoji-Kitamachi Musashino-shi Tokyo180-8633 Japan Graduate School of Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-Ku Fukuoka811-0295 Japan Department of Information and Communication Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-Ku Fukuoka811-0295 Japan Department of Advanced Sciences Faculty of Science and Engineering Hosei University Kajino-Machi Koganei-Shi Tokyo184-8584 Japan

ISBN: (纸本)9783030503987

The Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure because they have many advantages such as low cost and increased high speed wireless Internet connectivity. In our previous work, we implemented a simulation system considering Particle Swarm Optimization (PSO), Simulated Annealing (SA) and Distributed Genetic Algorithm (DGA), called WMN-PSOSA-DGA. In this paper, we present the performance of WMNs using WMN-PSOSA-DGA simulation system considering Linearly Decreasing Vmax Method (LDVM) and Rational Decrement of Vmax Method (RDVM). Simulation results show that a good performance is achieved for RDVM compared with the case of LDVM. © Springer Nature Switzerland AG 2021.

关键词： Simulated annealing

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Stable optical beats between laser longitudinal modes for THz waves using chaotic supremacy 18

Stable optical beats between laser longitudinal modes for TH...

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Terahertz, RF, Millimeter, and Submillimeter-Wave technology and Applications XVIII 2025

作者： Kuwashima, Fumiyoshi Jarrahi, Mona Cakmakyapan, Semih Wada, Kenji Haraguchi, Masanobu Kawakami, Yuki Moriyasu, Takeshi Morikawa, Osamu Kurihara, Kazuyoshi Kitahara, Hideaki Furuya, Takashi Nakajima, Makoto Tani, Masahiko Department of Electrical Electronic and Computer Engineering Faculty of Engineering Fukui University of Technology 3-6-1 Gakuen Fukui910-8505 Japan Electrical and Computer Engineering Department University of California Los Angeles 66-147E Engineering IV 420 Westwood Plaza Los AngelesCA90095 United States Department of Physics and Electronics Osaka Metropolitan University 1-1 Gakuencho Naka-ku Osaka Sakai599-8531 Japan Graduate School of Technology Industrial and Social Science Tokushima University Tokushima770-8506 Japan Fukui College Geshi-Cho Sabae Fukui916-8507 Japan Faculty of Engineering University of Fukui 3-9-1 Bunkyo Fukui city910-8507 Japan Japan Coast Guard Academy Wakabacho 5-1 Hiroshima Kure737-8512 Japan School of Education University of Fukui 3-9-1 Bunkyo Fukui910-8507 Japan Research Center for Development of Far-Infrared Region University of Fukui 3-9-1 Bunkyo Fukui910-8507 Japan Institute of Laser engineering Osaka Univ. 2-6 Yamadaoka Osaka Suita565-0871 Japan

ISBN: (纸本)9781510684782

Efficiency of optical beats in a chaotically oscillating laser is confirmed comparing that of free running CW laser using a highly efficient plasmonic photomixer. Ultra-stability of optical beats with laser chaos continues down to the laser threshold level. The great potential of chaotically oscillating lasers is verified for THz systems. © 2025 SPIE.

关键词： Optical phase conjugation

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Amplification and cloning of arabidopsis 6xhis-tagged mpk6 fusion encoded gene to characterize biochemical mitogen-activated protein kinase in disease resistance role against Fusarium graminearum 2

Amplification and cloning of arabidopsis 6xhis-tagged mpk6 f...

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2nd International Conference of Interdisciplinary Research on Green Environmental Approach for Sustainable Development, ICROEST 2020

作者： Rahmah, M.H. Nishiuchi, T. Study Program of Biology Education Faculty of Teacher Training and Education Universitas Sulawesi Barat Majene Sulawesi Barat Indonesia Division of Functional Genomics Advanced Science Research Center Kanazawa University 13-1 Takaramachi Kanazawa920-0934 Japan Division of Life Science Graduate School of Natural Science and Technology Kanazawa University Kanazawa920-1192 Japan

The Mitogen-Activated Protein Kinase (MPK) cascade plays an important role in the intracellular signaling transduction pathway leading to resistance against phytopathogens produced by Fusarium graminearum. In the cascade, there are three prominent kinase protein groups involved, an MPK kinase kinase (MPKKK), MPK kinase (MPKK), and an MPK. Recognitions of pathogen-derived molecules in plants trigger rapid activation of some MPKs including MPK6 which are found in a wide variety of plant species, including in Arabidopsis thaliana. The structure of MPK6 contains kinase domain and common docking (CD) domain. CD domain is phosphorylated by interact with MPKK. Moreover, the MPKK which binds to MPK6 and its phosphorylation mechanism are still unknown, so as initial study is needed to investigate biochemical characterization by prepare MPK6 protein. In this research, mpk 6 was amplified by using a pair primer and subsequently was ligated into pET160/GW/D-TOPO vector which contained with sequence encoded 6xHistidine tag protein for protein purification assay. © Published under licence by IOP Publishing Ltd.

关键词： Phosphorylation

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Performance Evaluation of WMN-PSOSA-DGA Simulation System Considering Uniform and Chi-Square Client Distributions 23rd

Performance Evaluation of WMN-PSOSA-DGA Simulation System Co...

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23rd International Conference on Network-Based Information Systems, NBiS 2020

作者： Barolli, Admir Sakamoto, Shinji Ampririt, Phudit Ohara, Seiji Barolli, Leonard Takizawa, Makoto Department of Information Technology Aleksander Moisiu University of Durres L.1 Rruga e Currilave Durres Albania Department of Computer and Information Science Seikei University 3-3-1 Kichijoji-Kitamachi Musashino-shiTokyo180-8633 Japan Graduate School of Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-KuFukuoka811-0295 Japan Department of Information and Communication Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-KuFukuoka811-0295 Japan Department of Advanced Sciences Faculty of Science and Engineering Hosei University Kajino-Machi Koganei-ShiTokyo184-8584 Japan

ISBN: (纸本)9783030578107

The Wireless Mesh Networks (WMNs) have many advantages such as low cost and high-speed wireless Internet connectivity. The connectivity and stability are important factors in the performance of WMNs. In our previous work, we implemented a simulation system considering Particle Swarm Optimization (PSO), Simulated Annealing (SA) and Distributed Genetic Algorithm (DGA), called WMN-PSOSA-DGA. In this paper, we evaluate the performance of WMNs using WMN-PSOSA-DGA simulation system considering Uniform and Chi-square distributions of mesh clients. Simulation results show that a good performance is achieved for Chi-square distribution compared with the case of Uniform distribution. © 2021, Springer Nature Switzerland AG.

关键词： Simulated annealing

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New strategy for reversal tolerant anode for automotive polymer electrolyte fuel cell

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Chinese Chemical Letters 2019年第6期30卷 1186-1189页

作者： Chanho Pak Seung Woo Lee Chaekyung Baik Bong Ho Lee Dae Jong You Eunyoung You Graduate Program of Energy Technology School of Integrated Technology Institute of Integrated Technology Gwangju Institute of Science and Technology Gwangju 61005 Republic of Korea Fuel Cell Engineering Core Technology Team Division of Electric Powertrain Hyundai Mobis Co. Ltd. Yongin Gyeonggi-do 16891 Republic of Korea

Since the commercialization of the fuel cell electric vehicles (FCEVs), the polymer electrolyte membrane fuel cell system has been actively improved as a powertrain for ultimate environment-friendly vehicle. During the FCEV operation, various transient conditions such as start-up/shut-down and fuel starvation occur irregularly, which deteriorates the durability of the membrane electrode assembly. In particular, when fuel starvation occurs, the carbon support in the anode is oxidized within few minutes, thus the mitigation of this phenomenon is essential for securing the durability. This short review introduces the concept of reversal tolerant anode (RTA), which is a mitigation method using an oxygen evolution catalyst and reviews some previous reports. In addition, new approach for RTA suggested by authors recently, which is the replacement of Pt anode catalyst by multifunctional IrRu alloy catalyst that simultaneously exhibits the activities for the hydrogen oxidation reaction and the oxygen evolution reaction is introduced.

关键词： Multifunctional IrRu alloy catalyst Reversal tolerant anode Hydrogen oxidation reaction catalyst Oxygen evolution reaction catalyst Cell reversal durability Polymer electrolyte membrane fuel cell

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Landau Polaritons in a Full-Dielectric Three-Dimensional Photonic-Crystal Cavity

Landau Polaritons in a Full-Dielectric Three-Dimensional Pho...

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CLEO: science and Innovations, S and I 2022

作者： Tay, Fuyang Mojibpour, Ali Liang, Shuang Baydin, Andrey Ahmadivand, Arash Peraca, Nicolas Marquez Xu, Hongjing Gardner, Geoff C. Manfra, Michael J. Hagenmüller, David Kono, Junichiro Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Physics and Astronomy Purdue University West LafayetteIN47907 United States Birck Nanotechnology Center Purdue University West LafayetteIN47907 United States Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States Microsoft Quantum Purdue Purdue University West LafayetteIN47907 United States School of Electrical and Computer Engineering Purdue University West LafayetteIN47907 United States School of Materials Engineering Purdue University West LafayetteIN47907 United States Université de Strasbourg CNRS Strasbourg67000 France Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States

ISBN: (纸本)9781557528209

We fabricated a full-dielectric three-dimensional photonic-crystal cavity containing an ultrahigh-mobility two-dimensional electron gas. By applying a strong perpendicular magnetic field, we created Landau polaritons originating from the ultrastrong coupling of electrons with cavity modes. © Optica Publishing Group 2022, © 2022 The Author(s)

关键词： Polariton

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Fast pedestrian detection method based on BING

Fast pedestrian detection method based on BING

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3rd Asian Conference on Artificial Intelligence technology, ACAIT 2019

作者： Zhao, Yong Cui, Zhongwei Zhang, Yongjun Xu, Wenbo Liang, Hao Zuo, Yu Big Data Science and Intelligent Engineering Research Institute Guizhou Education University Guiyang550018 China Key Lab of Integrated Microsystems Peking University Shenzhen Graduate School Shenzhen518055 China College of Computer Science and Technology Guizhou University Guiyang550025 China

Pedestrian detection is one of hot topics in the field of computer vision and pattern recognition, which is of great value to video surveillance, intelligent traffic and human-computer interaction, etc. and how to improve detection rate and speed is the key. Most traditional pedestrian detection methods are based on the pyramid sliding window scanning method, and for images in which the majority of the region does not contain a body, the detection is inefficient. This study presents a body window sampling algorithm based on binarised normed gradients, which can quickly and effectively extract the window of the image that most likely contains human body to be identified, thus greatly improving the detection speed and obtaining a lower false alarm rate. The authors employ the histogram of oriented gradient feature and the linear support vector machine to train the classifier. For the same false test case in comparison with the pyramid scanning method, when the authors used 2,000 sampling windows for detection, they observed a detection rate increase of 11%, the detection speed increased 19.6 times. For 5,000 sampling windows, the detection rate increased by 20% and the detection speed increased 7.8 times. © 2020 Institution of Engineering and technology. All rights reserved.

关键词： Human computer interaction

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