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arXiv 2021年

作者： Jin, Zhongwei Janoschka, David Deng, Junhong Ge, Lin Dreher, Pascal Frank, Bettina Hu, Guangwei Ni, Jincheng Yang, Yuanjie Li, Jing Yu, Changyuan Lei, Dangyuan Li, Guixin Xiao, Shumin Mei, Shengtao Giessen, Harald zu Heringdorf, Frank Meyer Qiu, Cheng-Wei Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore117583 Singapore College of Optical and Electronic Technology China Jiliang University Hangzhou310018 China University of Duisburg–Essen Lotharstrasse 1-21 Duisburg47057 Germany Department of Materials Science and Engineering Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China Beijing Qianjunyide Technology Co. Ltd. Beijing100031 China University of Stuttgart StuttgartD-70569 Germany School of Physics University of Electronic Science and Technology of China Chengdu611731 China Key Laboratory of Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China Department of Electronic and Information Engineering Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong Hong Kong Department of Materials Science and Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong Hong Kong State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Shenzhen Graduate School Harbin Institute of Technology Shenzhen518055 China

Nanophotonic platforms such as metasurfaces, achieving arbitrary phase profiles within ultrathin thickness, emerge as miniaturized, ultracompact and kaleidoscopic optical vortex generators. However, it is often required to segment or interleave independent sub-array metasurfaces to multiplex optical vortices in a single nano-device, which in turn affects the device’s compactness and channel capacity. Here, inspired by phyllotaxis patterns in pine cones and sunflowers, we theoretically prove and experimentally report that multiple optical vortices can be produced in a single compact phyllotaxis nanosieve, both in free space and on a chip, where one meta-atom may contribute to many vortices simultaneously. The time-resolved dynamics of on-chip interference wavefronts between multiple plasmonic vortices was revealed by ultrafast time-resolved photoemission electron microscopy. Our nature-inspired optical vortex generator would facilitate various vortex-related optical applications, including structured wavefront shaping, free-space and plasmonic vortices, and high-capacity information metaphotonics. Copyright © 2021, The Authors. All rights reserved.

关键词： Plasmonics

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Synthesis and biological evaluation of C-4 substituted phenoxazine-bearing hydroxamic acids with potent class II histone deacetylase inhibitory activities

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Journal of enzyme inhibition and medicinal chemistry 2023年第1期38卷 2212326页

作者： Jung-Chun Chu Hui-Ju Tseng Sung-Bau Lee Kai-Cheng Hsu Ling-Wei Hsin Ru-Hao Liang Tony Eight Lin Nain-Chu Gao Liang-Chieh Chen Wan-Hsun Lu Andrew H-J Wang Wei-Jan Huang Ph.D. Program in Drug Discovery and Development Industry College of Pharmacy Taipei Medical University Taipei Taiwan. School of Pharmacy Taipei Medical University Taipei Taiwan. Department of Pharmacology and Pharmaceutical Sciences School of Pharmacy University of Southern California Los Angeles California United States. Graduate Institute of Cancer Biology and Drug Discovery College of Medical Science and Technology Taipei Medical University Taipei Taiwan. Ph.D. Program for Cancer Molecular Biology and Drug Discovery College of Medical Science and Technology Taipei Medical University Taipei Taiwan. TMU Research Center for Drug Discovery Taipei Medical University Taipei Taiwan. School of Pharmacy College of Medicine National Taiwan University Taipei Taiwan. Graduate Institute of Pharmacognosy College of Pharmacy Taipei Medical University Taipei Taiwan. The Ph.D. Program for Translational Medicine College of Medical Science and Technology Taipei Medical University Taipei Taiwan.

Class II histone deacetylases (HDACs) are considered as potential targets to treat Alzheimer's disease (AD). Previously, C-3 substituted phenothiazine-containing compounds with class II HDAC-inhibiting activities was found to promote neurite outgrowth. This study replaced phenothiazine moiety with phenoxazine that contains many C-3 and C-4 substituents. Some resulting compounds bearing the C-4 substituent on a phenoxazine ring displayed potent class II HDAC inhibitory activities. Structure-activity relationship (SAR) of these compounds that inhibited HDAC isoenzymes was disclosed. Molecular modelling analysis demonstrates that the potent activities of C-4 substituted compounds probably arise from π-π stacked interactions between these compounds and class IIa HDAC enzymes. One of these, compound exhibited the most potent class II HDAC inhibition (IC= 3-870 nM). Notably, it protected neuron cells from HO-induced neuron damage at sub-μM concentrations, but with no significant cytotoxicity. These findings show that compound is a lead compound for further development of anti-neurodegenerative agents.

关键词： Histone deacetylase (HDAC) neuron cells phenoxazine structure-activity relationship (SAR)

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TextAI 3.0 (Multimodal): multimodal sentiment analysis using attention-enabled ensemble-based deep learning in hyperbolic space

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International Journal of Information technology (Singapore) 2025年 1-16页

作者： Singh, Jaskaran Sanga, Prabhav Khanna, Narendra N. Laird, John R. Singh, Inder M. Kalra, Mannudeep K. Mantella, Laura E. Johri, Amer M. Faa, Gavino Tiwari, Ekta Singh, Rajesh Abbas, Mohamed Saba, Luca Suri, Jasjit S. Stroke Monitoring and Diagnostic Division AtheroPoint™ Roseville 95661 CA United States Bharati Vidyapeeth’s College of Engineering New Delhi India Department of Cardiology Indraprastha APOLLO Hospitals New Delhi 110001 India Department of Neurology and Stroke Program University of Maryland School of Medicine Baltimore United States Department of Radiology Harvard Medical School Boston 02115 MA United States Department of Biomedical and Molecular Sciences Queen’s University Kingston ON Canada Division of Cardiology Department of Medicine Queen’s University Kingston ON Canada Department of Pathology University of Cagliari Cagliari Italy Department of Computer Science Visvesvaraya National Institute of Technology (VNIT) Nagpur 440010 India Department of Research and Innovation Uttaranchal Institute of Technology Uttaranchal University Dehradun 248007 India Central Labs King Khalid University P.O. Box 960 AlQura’a Abha Saudi Arabia Electrical Engineering Department College of Engineering King Khalid University Abha 61421 Saudi Arabia Department of Neurology University of Cagliari Cagliari Italy Department of ECE Idaho State University Pocatello 83209 ID United States Department of CE Graphic Era Deemed to Be University Dehradun 248002 India University Center for Research and Development Chandigarh University Mohali India Symbiosis Institute of Technology Symbiosis International (Deemed University) Nagpur Campus Pune India Department of Innovation Global Biomedical Technologies Inc. Roseville 95661 CA United States

The rising prevalence of depression presents a significant global health challenge, underscoring the need for effective early detection through sentiment analysis. Traditional multimodal sentiment analysis methods, which rely on Euclidean space for data representation, often fail to capture the complex hierarchical relationships and non-linear structures inherent in multimodal data. To address this limitation, we propose a novel multimodal architecture that operates in hyperbolic space and incorporates attention-based ensemble learning to enhance feature representation and model performance. We developed and evaluated ten AI models—five utilizing Euclidean space and five leveraging hyperbolic space—on the Spoken Language Understanding Evaluation (SLUE) benchmark dataset. The models were assessed using cross-validation techniques to ensure robustness, and statistical analyses were conducted to validate the findings. Our results indicate that hyperbolic-based multimodal models achieve a 2.32% improvement in accuracy compared to their Euclidean counterparts, while the integration of self-attention mechanisms further contributes an average accuracy gain of 0.96%. Additionally, we observed a 3.76% decline in performance when reducing the training-to-test data ratio from 90:10 to 50:50, highlighting the importance of data distribution in model training. These findings confirm that attention-enhanced multimodal models in hyperbolic space offer superior representations for sentiment analysis. © Bharati Vidyapeeth's Institute of computer Applications and Management 2025.

关键词： Attention-enabled Deep learning Euclidean space Hyperbolic space Multimodal Sentiment analysis

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Terahertz chiral photonic-crystal cavities with broken time-reversal symmetry

arXiv

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arXiv 2024年

作者： Tay, Fuyang Sanders, Stephen Baydin, Andrey Song, Zhigang Welakuh, Davis M. Alabastri, Alessandro Rokaj, Vasil Dag, Ceren B. 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 Smalley–Curl Institute Rice University HoustonTX77005 United States John A. Paulson School of Engineering and Applied Sciences Harvard University CambridgeMA02139 United States Max Planck Institute for The Structure and Dynamics of Matter Luruper Chaussee 149 Hamburg22761 Germany ITAMP Harvard-Smithsonian Center for Astrophysics CambridgeMA02138 United States Department of Physics Harvard University CambridgeMA02138 United States Department of Physics Villanova University VillanovaPA19085 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States

Strong coupling between matter and vacuum electromagnetic fields in a cavity can induce novel quantum phases in thermal equilibrium via symmetry breaking. Particularly, coupling with circularly polarized fields can break time-reversal symmetry, leading to topological modifications in the band structure. Therefore, chiral optical cavities that host chiral vacuum fields are being sought, especially in the terahertz (THz) frequency range, where various large-oscillator-strength resonances exist. Here, we present a novel approach to achieving THz chiral photonic-crystal cavities (PCCs) with high-quality factors (>400) using a magnetoplasma in a lightly doped semiconductor. Numerical simulations of an optimized structure based on InSb in a small perpendicular magnetic field (∼0.2 T) show chiral cavity resonances with near-perfect ellipticity at the surfaces of the central dielectric layer, where one can place atomically thin materials like monolayer graphene. We theoretically estimate an energy gap on the order of 1 meV in graphene when coupled to our proposed chiral cavity, which is potentially measurable in experiments. These THz chiral PCCs offer a promising platform for exploring new phases in cavity-dressed condensed matter with broken time-reversal symmetry. Copyright © 2024, The Authors. All rights reserved.

关键词： Crystal symmetry

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Model of Web Based Application to Control Bridge Traveler Using Raspberry Pi 3

Model of Web Based Application to Control Bridge Traveler Us...

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3rd International Conference on computer science and Computational Intelligence, ICCSCI 2018

作者： Wisnusenna, Sebastian Yonatan, Michael Sunardy Wibisurya, Aswin Fanny Yuwono, Teguh Computer Science Program Computer Science Department School of Computer Science Bina Nusantara University Jakarta11480 Indonesia Mobile Appication and Technology Program Computer Science Department School of Computer Science Bina Nusantara University Jakarta11480 Indonesia Struktur Pintar Indonesia Jakarta12950 Indonesia

Bridge traveler is used to facilitate the construction and maintenance of a bridge which is controlled using control panel buttons, located inside the traveler. However, this method leads to some problems, like a difficulty of moving a traveler to a proper position (perspective) and an inhibition of work due to damaged control panel. In this research, a model of a web-based application to control a traveler with spans by using Raspberry Pi is developed. This research's contribution is a model of a web-based application for traveler automation in all possible movements of its components. As the results, the experiments show that the program implemented doesn't take much time and the execution of a command is done in a reasonable time. Moreover, for the safety of the bridge traveler, this program also implements a sensor that works when a component is at its most downward/inward position and detecting a blocking object in the middle of a possible movement and stops the movement immediately. © 2018 The Authors. Published by Elsevier Ltd.

关键词： Internet of things

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Accelerometer-based head impact detection in soccer - Where are we?

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Health sciences Review 2024年 10卷 100141-100141页

作者： Deju, Bamlak Afzal, Hamayl Basnyat, Suhana Dali, Animesh Scott, Katelin E.J. Delancey, Rachel Chopra, Nipun Department of Computer Science DePauw University Greencastle IN 46135 United States Cell and Molecular Biology Program Duke University Durham NC 22708 United States Department of Biology DePauw University Greencastle IN 46135 United States Department of Psychiatry University of Iowa Iowa City IA 52242 United States Department of Psychology and Neuroscience DePauw University Greencastle IN 46135 United States Biomedical Sciences Graduate Program University of Virginia School of Medicine Charlottesville VA 22903 United States

AbstractTraumatic brain injury (TBI) represents a significant burden on individuals, societies, and healthcare systems as it is associated with long-term neurological and behavioral consequences. Although these effects vary according to severity, events that lead to TBI and mild TBI (mTBI), such as concussions, subconcussive impacts, and non-impact violent head movements, may also lead to similar changes. Soccer players are particularly prone to mTBI as they are exposed to head impacts in various ways during training and gameplay. A commonly-claimed TBI risk is that posed by the " heading" technique. Our examination of the literature questions the extent to which heading actually is a risk for TBI and mTBI vs other sources of head impact in soccer. Although headgear may protect against some impacts, it has not been widely adopted due to limited efficacy, practical limitations and potential changes to the heading technique. Nevertheless, accurate assessment of head impacts and other movements that may lead to TBI in soccer would be valuable to players, coaches, athletic and medical personnel. A potential method for accurately detecting head acceleration – a crucial element of most head injuries – is measurements through accelerometers. Here, we survey the different types of accelerometers and recent findings on their accuracy and feasibility among soccer players and offer suggestions for long-term research with these tools.

关键词： Soccer Brain injury Concussion Subconcussive injury Detection

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A Comparison of Facial P300-Speller Paradigm Based on Famous Face and the Familiar Face

A Comparison of Facial P300-Speller Paradigm Based on Famous...

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International Congress on Image and Signal Processing, BioMedical Engineering and Informatics

作者： Zhaohua Lu Ning Gao Weiwei Zhou Jingjing Yang Jinglong Wu Qi Li School of Computer Science and Technology Changchun University of Science and Technology Changchun P.R. China Graduate School of Natural Science and Technology Okayama University 3-1-1 Tsushima-naka Okayama Japan

Some studies about face recognition showed the human face with more relevant to oneself induces larger amplitude ERPs than the famous face. The famous face stimulus has been used to the P300-speller paradigm and improved the performance of P300-speller system. In our study, we designed a novel P300-speller paradigm using familiar face as stimulus, and the famous face P300-speller paradigm was as the control paradigm. We compared the ERPs and the classification accuracy between the two paradigms. The results showed that larger ERPs amplitude in the proposed paradigm than that in the control paradigm, and the average classification of proposed paradigm was greater than that in the control paradigm, while we didn't find the significant difference for classification accuracy between the two paradigms.

关键词： Face recognition Faces Electroencephalography Electrodes Electric potential Band-pass filters Scalp

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Blackhole-Inspired Thermal Trapping with Graded Heat-Conduction Metadevices

arXiv

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arXiv 2022年

作者： Xu, Liujun Liu, Jinrong Jin, Peng Xu, Guoqiang Li, Jiaxin Ouyang, Xiaoping Li, Ying Qiu, Cheng-Wei Huang, Jiping Fudan University Shanghai200438 China Department of Electrical and Computer Engineering National University of Singapore Singapore117583 Singapore Graduate School of China Academy of Engineering Physics Beijing100193 China School of Mechatronics Engineering Harbin Institute of Technology Harbin150001 China School of Materials Science and Engineering Xiangtan University Xiangtan411105 China Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou310027 China International Joint Innovation Center Key Laboratory of Advanced Micro/Nano Electronic Devices and Smart Systems of Zhejiang The Electromagnetics Academy of Zhejiang University Zhejiang University Haining314400 China

Black holes are one of the most intriguing predictions of general relativity. So far, metadevices have enabled analogous black holes to trap light or sound in laboratory spacetime. However, trapping heat in a conductive ambient is still challenging because diffusive behaviors are directionless. Inspired by black holes, we construct graded heat-conduction metadevices to achieve thermal trapping, resorting to the imitated advection produced by graded thermal conductivities rather than the trivial solution of using insulation materials to confine thermal diffusion. We experimentally demonstrate thermal trapping for guiding hot spots to diffuse towards the center. Graded heat-conduction metadevices have advantages in energy-efficient thermal regulation because the imitated advection has a similar temperature field effect to the realistic advection that is usually driven by external energy sources. These results also provide insights into correlating transformation thermotics with other disciplines such as cosmology for emerging heat control schemes. Copyright © 2022, The Authors. All rights reserved.

关键词： Advection

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Back Cover Image, Volume 7, Number 4, April 2025

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Carbon Energy 2025年第4期7卷

作者： Jiao Yang Xiaoyang Zheng Syed Shoaib Ahmad Shah Chao Wang Xueyao Li Zhishuo Yan Lishan Peng Key Laboratory of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou China Institute of Applied Physics and Materials Engineering University of Macau Macao SAR China Department of Mechanical Engineering Graduate School of Engineering The University of Tokyo Tokyo Japan Department of Chemistry School of Natural Sciences National University of Sciences and Technology Islamabad Pakistan Department of Chemistry University of Connecticut Storrs Connecticut USA School of Rare Earths University of Science and Technology of China Hefei China Department of Electrical and Computer Engineering North Dakota State University Fargo USA

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User Experience Metric for Augmented Reality Application: A Review 3

User Experience Metric for Augmented Reality Application: A ...

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3rd International Conference on computer science and Computational Intelligence, ICCSCI 2018

作者： Arifin, Yulyani Sastria, Thomas Galih Barlian, Edo Computer Science Department School of Computer Science Bina Nusantara University Jakarta11480 Indonesia Game Application and Technology Program Computer Science Department School of Computer Science Bina Nusantara University Jakarta11480 Indonesia

Augmented Reality technology is developing rapidly and has been widely used in the field of education. Due to the ease of developing AR by non-professionals, User Experience (UX) is often not considered in the application. Currently, there are no standard measurements of UX for AR applications especially in Education. The authors reviewed previous research to obtain UX references and the existing measurement standards. From the results of the review, the metrics were analyzed based on the characteristics of AR, especially in the field of education. The metrics will be recommended for the UX measurement of an AR application. The available standard metrics can be used to determine the UX quality of an AR application and contribute to the improvement of UX in AR applications, especially in the field of Education. © 2018 The Authors. Published by Elsevier Ltd.

关键词： Natural language processing systems

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